JP4801824B2 - Magnetic machine - Google Patents

Description

  According to the present invention, a magnetic pole in which a plurality of soft magnetic induction poles are arranged is arranged between a first magnetic pole array in which a plurality of magnetic poles are arranged and a second magnetic pole array in which a plurality of magnetic poles are arranged. Related to machinery.

An annular stator having a plurality of armatures and generating a rotating magnetic field is fixed to a casing, and a first rotor that supports a plurality of permanent magnets on the outer periphery is rotatably supported inside the stator, and a plurality of soft magnetic bodies The cylindrical second rotor that supports the magnetic induction magnetic pole is rotatably supported between the stator and the first rotor, so that output can be separately taken out from the first rotor and the second rotor. A shaft output type electric motor is known from Patent Document 1 below.
Japanese Patent No. 3427511

  By the way, in this type of rotating electric machine, when the magnetic pole of the permanent magnet of the inner rotor, the induction magnetic pole of the outer rotor, and the magnetic pole of the armature of the stator are aligned in the radial direction, the magnetic flux emitted from the magnetic pole of the inner rotor Passes through the induction magnetic pole of the outer rotor located radially outside and flows to the magnetic pole of the stator located radially outside, but the induction magnetic pole of the outer rotor shifts in the circumferential direction and is adjacent to the circumferential direction of the inner rotor. When the magnetic pole is located between the two magnetic poles, the magnetic flux emitted from the magnetic pole of the inner rotor passes through the induction magnetic pole of the outer rotor located on the outer side in the radial direction, and extends in the circumferential direction of the magnetic pole of the inner rotor. There is a possibility that the adjacent magnetic poles are short-circuited, so that the magnetic efficiency is lowered and the performance of the rotating electrical machine is not fully exhibited.

  The present invention has been made in view of the above circumstances, and in a magnetic machine in which an induction magnetic pole row is disposed between first and second magnetic pole rows, it is possible to improve performance by minimizing short-circuiting of magnetic flux. With the goal.

  To achieve the above object, according to the first aspect of the present invention, a first magnetic pole array in which a plurality of magnetic poles are arranged in the circumferential direction and a second magnetic pole array in which the plurality of magnetic poles are arranged in the circumferential direction. In the magnetic machine in which a plurality of soft magnetic magnetic induction magnetic poles are arranged in a circumferential direction, a mechanical angle corresponding to an electrical angle of 180 ° of the first magnetic pole array, What is claimed is: 1. A magnetic machine characterized in that the angle formed by the two circumferential ends of the induction magnetic pole of the induction magnetic pole row with respect to the axis is smaller than at least one of the mechanical angle corresponding to an electrical angle of 180 [deg.] Of the two magnetic pole row. Proposed.

  According to the second aspect of the present invention, a plurality of soft magnetisms are provided between the first magnetic pole row in which the plurality of magnetic poles are arranged in the linear direction and the second magnetic pole row in which the plurality of magnetic poles are arranged in the linear direction. In a magnetic machine having an induction magnetic pole array in which body-made induction magnetic poles are arranged in a linear direction, a distance corresponding to an electrical angle of 180 ° of the magnetic pole of the first magnetic pole array and an electrical angle 180 of the magnetic pole of the second magnetic pole array There is proposed a magnetic machine characterized in that the distance between both ends in the linear direction of the induction magnetic pole of the induction magnetic pole row is made smaller than at least one of the distance corresponding to °.

  According to the invention described in claim 3, in addition to the configuration of claim 1 or 2, one of the first magnetic pole row and the second magnetic pole row is constituted by a plurality of armatures, A magnetic machine that moves at least one of the other of the first magnetic pole row and the second magnetic pole row and the induction magnetic pole row by generating a moving magnetic field by controlling energization of the armature Is proposed.

  According to a fourth aspect of the invention, in addition to the configuration of the first or second aspect, one of the first magnetic pole row and the second magnetic pole row is constituted by a plurality of armatures, and the first A magnetic machine characterized in that an electromotive force is generated in the plurality of armatures by moving at least one of the other one of the one magnetic pole array and the second magnetic pole array and the induction magnetic pole array with an external force. The

  According to the fifth aspect of the present invention, in addition to the configuration of the first or second aspect, at least one of the first magnetic pole row, the second magnetic pole row, and the induction magnetic pole row is subjected to an external force. A magnetic machine is proposed in which at least one of the other two is moved by moving at the same time.

  The first and second armatures 21L and 21R of the embodiment correspond to the magnetic poles or armatures of the first magnetic pole row of the present invention, and the first and second induction magnetic poles 38L and 38R of the embodiments are the present invention. The first and second permanent magnets 52L and 52R in the embodiment correspond to the magnetic poles of the second magnetic pole row of the present invention.

  According to the configuration of claim 1, in the magnetic machine in which the induction magnetic pole row is disposed between the first magnetic pole row and the second magnetic pole row, a mechanical angle corresponding to an electrical angle of 180 ° of the magnetic pole of the first magnetic pole row; Since the angle formed by the both ends in the circumferential direction of the induction magnetic pole of the induction magnetic pole row with respect to the axis is smaller than at least one of the mechanical angle corresponding to the electrical angle of 180 ° of the magnetic pole of the second magnetic pole row, the first magnetic pole row Alternatively, magnetic efficiency can be increased by suppressing the occurrence of a magnetic short circuit between the magnetic poles adjacent to each other in the circumferential direction of the second magnetic pole row via the induction magnetic pole of the induction magnetic pole row.

  According to the second aspect of the present invention, in the magnetic machine in which the induction magnetic pole row is disposed between the first magnetic pole row and the second magnetic pole row, a distance corresponding to an electrical angle of 180 ° of the first magnetic pole row, Since the distance between the both ends of the induction magnetic pole array in the linear direction is smaller than at least one of the distances corresponding to the electrical angle of the magnetic pole of the magnetic pole array of 180 °, the linear direction of the first magnetic pole array or the second magnetic pole array It is possible to increase the magnetic efficiency by suppressing the occurrence of a magnetic short circuit between the magnetic poles adjacent to each other via the induction magnetic poles of the induction magnetic pole row.

  According to the third aspect of the present invention, one of the first magnetic pole row and the second magnetic pole row is constituted by a plurality of armatures, and a moving magnetic field is generated by controlling energization to the plurality of armatures. The other of the magnetic pole row and the second magnetic pole row or the induction magnetic pole row can be moved to function as an electric motor.

  According to the fourth aspect of the present invention, one of the first magnetic pole row and the second magnetic pole row is constituted by a plurality of armatures, and the other of the first magnetic pole row and the second magnetic pole row or the induction magnetic pole row is moved by an external force. Thus, an electromotive force can be generated in a plurality of armatures to function as a generator.

  According to the fifth aspect of the present invention, at least one of the first magnetic pole row, the second magnetic pole row, and the induction magnetic pole row is moved by an external force, so that at least one of the other two is moved and driven. It can function as a force transmission means.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  1 to 17 show a first embodiment of the present invention. FIG. 1 is a front view of the electric motor viewed in the axial direction (a view taken along line 1-1 in FIG. 2), and FIG. FIG. 3 is a sectional view taken along line 3-3 of FIG. 2, FIG. 4 is a sectional view taken along line 4-4 of FIG. 2, FIG. 5 is a sectional view taken along line 5-5 of FIG. Is an exploded perspective view of the motor, FIG. 8 is an exploded perspective view of the outer rotor, FIG. 9 is an exploded perspective view of the inner rotor, and FIG. 10 is an enlarged view of 10 parts of FIG. 11 is a diagram for explaining a magnetic short circuit of the permanent magnet of the inner rotor 14, FIG. 12 is a schematic diagram in which the electric motor is developed in the circumferential direction, and FIG. 13 is a diagram for explaining the operation when the inner rotor is fixed. 14 is an explanatory diagram of the operation when the inner rotor is fixed (part 2), and FIG. 15 is an explanatory diagram of the operation when the inner rotor is fixed (part 3). The actuation illustration when fixing the outer rotor (part 1), FIG. 17 is an actuation diagram when fixing the outer rotor (2).

  As shown in FIG. 7, the electric motor M of the present embodiment includes a casing 11 having a short octagonal cylindrical shape in the direction of the axis L, and annular first and second stators 12 </ b> L fixed to the inner periphery of the casing 11. 12R, a cylindrical outer rotor 13 that is housed in the first and second stators 12L, 12R and rotates about the axis L, and a cylindrical outer rotor 13 that is housed in the outer rotor 13 and rotates about the axis L The outer rotor 13 and the inner rotor 14 are rotatable relative to the fixed first and second stators 12L and LR, and the outer rotor 13 and the inner rotor 14 are mutually connected. Relative rotation is possible.

  As is apparent from FIGS. 1 and 2, the casing 11 includes a bottomed octagonal cylindrical main body portion 15 and an octagonal plate-like lid portion 17 fixed to the opening of the main body portion 15 with a plurality of bolts 16. A plurality of openings 15a... 17a for ventilation are formed in the main body 15 and the lid 17.

  As is apparent from FIGS. 1 to 4 and 7, the first and second stators 12L and 12R are obtained by superimposing the same structure in the circumferential direction, and one of the first stators 12L. As an example, the structure will be described. The first stator 12L includes a plurality of (in the embodiment, 24) first armatures 21L ... around which coils 20 are wound around an outer periphery of a core 18 made of laminated steel plates via an insulator 19. The one armature 21L is integrated by a ring-shaped holder 22 in a state of being coupled in the circumferential direction so as to form an annular shape as a whole. A flange 22a protruding in a radial direction from one end in the axis L direction of the holder 22 is fixed to a step portion 15b (see FIG. 2) on the inner surface of the main body portion 15 of the casing 11 with a plurality of bolts 23.

  Like the first stator 12L described above, the second stator 12R includes 24 second armatures 21R..., And the flange 22a of the holder 22 is a step 15c (see FIG. 15) on the inner surface of the main body 15 of the casing 11. 2) with a plurality of bolts 24. At this time, the circumferential phases of the first stator 12L and the second stator 12R are shifted from each other by half the pitch of the first and second permanent magnets 52L, 52R,. (See FIG. 4). The first and second armatures 21L, 21R,... Of the first and second stators 12L, 12R to 3 terminals 25, 26, 27 (see FIG. 1) 3 provided on the main body 15 of the casing 11. By supplying the phase alternating current, a rotating magnetic field can be generated in the first and second stators 12L and 12R.

  As is apparent from FIGS. 2, 7 and 8, the outer rotor 13 includes a rotor body 31 formed of a weak magnetic material in a bottomed cylindrical shape, and a rotor body 31 formed of a weak magnetic material in a disk shape. A hollow member provided with a rotor cover 33 fixed with bolts 32 to cover the opening of the first outer rotor shaft 34 projecting on the axis L from the center of the bottom of the rotor body 31 is a ball bearing. The second outer rotor shaft 36 that protrudes on the axis L from the center of the rotor cover 33 is rotatably supported by the lid portion 17 of the casing 11 by a ball bearing 37. Supported. A first outer rotor shaft 34 serving as an output shaft of the outer rotor 13 extends through the main body portion 15 of the casing 11 to the outside.

  The weak magnetic material is a material that is not attracted to the magnet, and includes, for example, resin and wood in addition to aluminum and the like, and is sometimes called a non-magnetic material.

  2, 6, 8, and 10, on the outer peripheral surface of the rotor body 31, a plurality of (in the embodiment, 20) slits 31 a. It is formed so as to communicate with the inside and outside. Each slit 31a is open on the bottom side of the rotor body 31 and closed on the opening side of the rotor body 31, and there is a first induction magnetic pole 38L made of soft magnetic material, a spacer 39, and a second soft magnetic material made of second. An induction magnetic pole 38R is inserted and embedded in the direction of the axis L from the bottom side of the rotor body 31. The first and second induction magnetic poles 38L and 38R are composed of steel plates stacked in the direction of the axis L.

  A pair of convex portions 31b and 31b projecting in directions approaching each other are formed on the opposing inner surfaces of the slits 31a of the rotor body 31, and the first and second induction magnetic poles 38L are in contact with the inner surfaces of the slits 31a. , 38R and the spacer 39 are formed with a pair of recesses 38a, 38a; 39a; 39a slidably engaged with the pair of projections 31b, 31b.

  Of the first and second induction magnetic poles 38L, 38R and the spacer 39 thus inserted into the slit 31a, the front end of the first induction magnetic pole 38L abuts against the stopper 31c (see FIG. 6) at the front end of the slit 31a. One of the plurality of elastic claws 41a projecting in the direction of the axis L from an annular holder 41 fixed to the bottom of the rotor body 31 with bolts 40 in a state where movement is restricted is the rear end of the second induction magnetic pole 38R. It is elastically abutted on. As a result, the first and second induction magnetic poles 38L and 38R and the spacer 39 inserted in the slit 31a are prevented from coming off in the direction of the axis L by the stopper 31c and the elastic claw 41a of the holder 41, and the occurrence of backlash is prevented.

  As is clear from FIG. 2, a first resolver 42 for detecting the rotational position of the outer rotor 13 is provided so as to surround the second outer rotor shaft 36 of the outer rotor 13. The first resolver 42 includes a resolver rotor 43 fixed to the outer periphery of the second outer rotor shaft 36 and a resolver stator 44 fixed to the lid portion 17 of the casing 11 so as to surround the resolver rotor 43. The

  As apparent from FIGS. 2 to 5 and 9, the inner rotor 14 includes a rotor body 45 formed in a cylindrical shape, and an inner rotor shaft 47 that passes through a hub 45 a of the rotor body 45 and is fixed by bolts 46. And annular first and second rotor cores 48 </ b> L and 48 </ b> R that are made of laminated steel plates and are fitted to the outer periphery of the rotor body 45, and an annular spacer 49 that is fitted to the outer periphery of the rotor body 45. One end of the inner rotor shaft 47 is rotatably supported by the ball bearing 50 inside the first outer rotor shaft 34 on the axis L, and the other end of the inner rotor shaft 47 is placed inside the second outer rotor shaft 36 by a ball bearing. While being rotatably supported by 51, it passes through the second outer rotor shaft 36 and the lid portion 17 of the casing 11 and extends outside the casing 11 as an output shaft of the inner rotor 14.

  The first and second rotor cores 48L and 48R fitted to the outer periphery of the rotor body 45 have the same structure, and a plurality (20 in the embodiment) of permanent magnet support holes 48a. 3 and FIG. 4), and first and second permanent magnets 52L... 52R are press-fitted in the direction of the axis L. The polarities of the adjacent first permanent magnets 52L of the first rotor core 48L are alternately reversed, the polarities of the adjacent second permanent magnets 52R of the second rotor core 48R are alternately reversed, and the first rotor core The circumferential phase of the 48L first permanent magnets 52L and the circumferential phase of the second permanent magnets 52R of the second rotor core 48R are shifted from each other by half of their pitch (FIG. 3). And FIG. 4).

  A weak magnetic spacer 49 is fitted in the center of the outer circumference of the rotor body 45 in the axis L direction, and a pair of inner permanent magnet support plates 53 that prevent the first and second permanent magnets 52L, 52R,. , 53 are fitted to each other, the first and second rotor cores 48L, 48R are fitted to the outer sides thereof, and the first and second permanent magnets 52L, 52R,. Magnet support plates 54 and 54 are respectively fitted, and a pair of stopper rings 55 and 55 are fixed to the outside by press-fitting.

  As apparent from FIG. 2, a second resolver 56 for detecting the rotational position of the inner rotor 14 is provided so as to surround the inner rotor shaft 47. The second resolver 56 includes a resolver rotor 57 fixed to the outer periphery of the inner rotor shaft 47 and a resolver stator 58 fixed to the lid portion 17 of the casing 11 so as to surround the resolver rotor 57.

  10, the first armature of the first stator 12L is formed on the outer peripheral surface of the first induction magnetic pole 38L ... exposed on the outer peripheral surface of the outer rotor 13 through a slight air gap α. The outer peripheral surface of the first rotor core 48L of the inner rotor 14 is opposed to the inner peripheral surface of the first induction magnetic pole 38L ... exposed to the inner peripheral surface of the outer rotor 13 through a slight air gap β. The faces are opposite. Similarly, the inner peripheral surface of the second armature 21R of the second stator 12R is opposed to the outer peripheral surface of the second induction magnetic poles 38R exposed on the outer peripheral surface of the outer rotor 13 through a slight air gap α. The outer peripheral surface of the second rotor core 48R of the inner rotor 14 faces the inner peripheral surface of the second induction magnetic poles 38R... Exposed on the inner peripheral surface of the outer rotor 13 with a slight air gap β.

  Next, the operation principle of the electric motor M according to the first embodiment having the above configuration will be described.

  FIG. 12 schematically shows a state where the electric motor M is developed in the circumferential direction. The first and second permanent magnets 52L, 52R,... Of the inner rotor 14 are shown on the left and right sides of FIG. The first and second permanent magnets 52L,..., 52R are alternately arranged with N and S poles at a predetermined pitch P in the circumferential direction (vertical direction in FIG. 12), and the first permanent magnets 52L. The two permanent magnets 52R are arranged so as to be shifted by a half of the predetermined pitch P, that is, by a half pitch P / 2.

  12, virtual permanent magnets 21 corresponding to the first and second armatures 21L, 21R,... Of the first and second stators 12L, 12R are arranged at a predetermined pitch P in the circumferential direction. . Actually, the number of first and second armatures 21L, 21R,... Of the first and second stators 12L, 12R is 24, and the first and second permanent magnets 52L, 52R of the inner rotor 14 are each. Since the number of... Is 20, each, the pitch of the first and second armatures 21L, 21R,... Does not coincide with the pitch P of the first, second permanent magnets 52L, 52R,. .

  However, since the first and second armatures 21L,..., 21R each form a rotating magnetic field, the first and second armatures 21L,. It can be replaced with 20 virtual permanent magnets 21. Hereinafter, the first and second armatures 21L, 21R,... Are referred to as first, second virtual magnetic poles 21L, 21R,. The polarities of the first and second virtual magnetic poles 21L, 21R,... Of the virtual permanent magnets 21 ... adjacent to each other in the circumferential direction are alternately reversed, and the first virtual magnetic poles 21L ... The two virtual magnetic poles 21R are shifted by a half pitch P / 2 in the circumferential direction.

  The first and second induction magnetic poles 38L, 38R,... Of the outer rotor 13 are arranged between the first and second permanent magnets 52L, 52R,. The first and second induction magnetic poles 38L,..., 38R are arranged at a pitch P in the circumferential direction, and the first induction magnetic poles 38L and the second induction magnetic poles 38R are aligned in the axis L direction.

  As shown in FIG. 12, when the polarity of the first virtual magnetic pole 21 </ b> L of the virtual permanent magnet 21 is different from the polarity of the first permanent magnet 52 </ b> L facing (closest) to the first virtual magnetic pole 21 </ b> L, The polarity is the same as the polarity of the second permanent magnet 52R facing (closest) to it. When the polarity of the second virtual magnetic pole 21R of the virtual permanent magnet 21 is different from the polarity of the second permanent magnet 52R facing (closest), the polarity of the first virtual magnetic pole 21L of the virtual permanent magnet 21 faces it. It becomes the same as the polarity of the (closest) first permanent magnet 52L (see FIG. 14G).

  First, the first and second stators 12L and 12R (first and second virtual magnetic poles 21L... 21R...) With the inner rotor 14 (first and second permanent magnets 52L... 52R...) Fixed in a non-rotatable state. ) To generate a rotating magnetic field, the operation when the outer rotor 13 (first and second induction magnetic poles 38L..., 38R...) Is rotationally driven will be described. In this case, it is fixed in the order of FIG. 13 (A) → FIG. 13 (B) → FIG. 13 (C) → FIG. 13 (D) → FIG. 14 (E) → FIG. 14 (F) → FIG. The virtual permanent magnets 21 ... rotate downward in the figure relative to the first and second permanent magnets 52L ... 52R ..., whereby the first and second induction magnetic poles 38L ... 38R ... rotate downward in the figure. .

  As shown in FIG. 13A, the first induction magnetic poles 38L are aligned and opposed to the first virtual poles 21L of the first permanent magnets 52L,. The virtual permanent magnets 21 are rotated downward in the figure from the state where the second induction magnetic poles 38R are shifted by a half pitch P / 2 with respect to the two virtual magnetic poles 21R and the second permanent magnets 52R. At the start of the rotation, the polarities of the first virtual magnetic poles 21L ... of the virtual permanent magnets 21 ... are different from the polarities of the first permanent magnets 52L ... opposite thereto, and the second virtual magnetic poles 21R of the virtual permanent magnets 21 ... The polarity of... Is the same as the polarity of the second permanent magnet 52R.

  Since the first induction magnetic poles 38L are arranged between the first permanent magnets 52L ... and the first virtual magnetic poles 21L ... of the virtual permanent magnets 21 ..., the first induction magnetic poles 38L ... are arranged as the first permanent magnets 52L ... The first magnetic lines G1 are generated between the first permanent magnets 52L, the first induction magnetic poles 38L, and the first virtual magnetic poles 21L. Similarly, since the second induction magnetic poles 38R are disposed between the second virtual magnetic poles 21R and the second permanent magnets 52R, the second induction magnetic poles 38R are the second virtual magnetic poles 21R and the second permanent magnets 52R. Are magnetized, and second magnetic lines of force G2 are generated between the second virtual magnetic poles 21R, second induction magnetic poles 38R, and second permanent magnets 52R.

  In the state shown in FIG. 13A, the first magnetic lines of force G1 are generated so as to connect the first permanent magnets 52L, the first induction magnetic poles 38L, and the first virtual magnetic poles 21L, and the second magnetic lines of force G2 are circular. Each of the two second permanent magnets 52R... Adjacent to each other in the circumferential direction so as to connect each of the two second virtual magnetic poles 21R... Adjacent to each other in the circumferential direction and the second induction magnetic pole 38R. It is generated so as to connect the second induction magnetic poles 38R. As a result, in this state, a magnetic circuit as shown in FIG. In this state, since the first magnetic lines of force G1 are linear, no magnetic force that rotates in the circumferential direction acts on the first induction magnetic poles 38L. Further, the bending degree and the total magnetic flux amount of the two second magnetic lines G2 between each of the two second virtual magnetic poles 21R ... and the second induction magnetic poles 38R ... adjacent to each other in the circumferential direction are equal to each other, and similarly in the circumferential direction. The bending degree and the total magnetic flux amount of the two second magnetic lines of force G2 between the two adjacent second permanent magnets 52R and the second induction magnetic poles 38R are also equal and balanced. Therefore, a magnetic force that rotates in the circumferential direction does not act on the second induction magnetic poles 38R.

  When the virtual permanent magnets 21 are rotated from the position shown in FIG. 13A to the position shown in FIG. 13B, the second virtual magnetic poles 21R, the second induction magnetic poles 38R, and the second permanent magnets 52R are moved. The second magnetic field lines G2 that are connected are generated, and the first magnetic field lines G1 between the first induction magnetic poles 38L and the first virtual magnetic poles 21L are bent. Accordingly, a magnetic circuit as shown in FIG. 15B is configured by the first and second magnetic lines of force G1, G2.

  In this state, although the degree of bending of the first magnetic lines of force G1 is small, the total magnetic flux amount is large, so that a relatively strong magnetic force acts on the first induction magnetic poles 38L. As a result, the first induction magnetic poles 38L are driven with a relatively large driving force in the rotation direction of the virtual permanent magnets 21, that is, the magnetic field rotation direction, and as a result, the outer rotor 13 rotates in the magnetic field rotation direction. Further, although the degree of bending of the second magnetic lines of force G2 is large, the total magnetic flux amount is small, so that a relatively weak magnetic force acts on the second induction magnetic poles 38R, so that the second induction magnetic poles 38R are relatively in the magnetic field rotation direction. Driven with a small driving force, the outer rotor 13 rotates in the direction of magnetic field rotation.

  Next, when the virtual permanent magnet 21 sequentially rotates from the position shown in FIG. 13B to the positions shown in FIGS. 13C, 13D, 14E, and 14F, the first induction magnetic pole 38L. ... and the second induction magnetic poles 38R are driven in the direction of magnetic field rotation by the magnetic force caused by the first and second magnetic lines of force G1, G2, respectively. As a result, the outer rotor 13 rotates in the direction of magnetic field rotation. In the meantime, the magnetic force acting on the first induction magnetic poles 38L is gradually weakened by decreasing the total magnetic flux amount, although the bending degree of the first magnetic lines G1 is increased. The driving force for driving in the direction gradually decreases. Further, the magnetic force acting on the second induction magnetic poles 38R is gradually increased as the total magnetic flux amount is increased, although the degree of bending of the second magnetic lines G2 is reduced, and the second induction magnetic poles 38R are made to move in the magnetic field rotation direction. The driving force to drive gradually increases.

  And while the virtual permanent magnet 21 rotates from the position shown in FIG. 14 (E) to the position shown in FIG. 14 (F), the second magnetic lines of force G2 are bent and the total magnetic flux amount is close to the maximum. As a result, the strongest magnetic force acts on the second induction magnetic poles 38R, and the driving force acting on the second induction magnetic poles 38R is maximized. Thereafter, as shown in FIG. 14 (G), the virtual permanent magnet 21 is rotated by the pitch P from the initial position of FIG. 13 (A), whereby the first, second virtual magnetic poles 21L,. When 21R rotates to a position opposite to the first and second permanent magnets 52L, 52R, respectively, the state shown in FIG. 13A is reversed to the left and right, and the outer rotor 13 is moved in the circumferential direction only at that moment. The rotating magnetic force stops working.

  When the virtual permanent magnet 21 further rotates from this state, the first and second induction magnetic poles 38L, 38R,... Are driven in the magnetic field rotation direction by the magnetic force caused by the first and second magnetic lines G1, G2. The rotor 13 rotates in the magnetic field rotation direction. At that time, while the virtual permanent magnet 21 is rotated again to the position shown in FIG. 13A, the magnetic force acting on the first induction magnetic poles 38L... However, as the total amount of magnetic flux increases, the strength increases and the driving force acting on the first induction magnetic poles 38L increases. On the contrary, the magnetic force acting on the second induction magnetic poles 38R... Is weakened by decreasing the total magnetic flux amount, although the bending degree of the second magnetic lines G2 is increased, and the driving force acting on the second induction magnetic poles 38R. Becomes smaller.

  13A and 14G, as the virtual permanent magnet 21 rotates by the pitch P, the first and second induction magnetic poles 38L... 38R. Since it rotates only by the pitch P / 2, the outer rotor 13 rotates at a speed that is 1/2 of the rotational speed of the rotating magnetic field of the first and second stators 12L, 12R. This is because the first and second induction magnetic poles 38L,..., 38R... Are connected to the first permanent magnet 52L. This is to rotate while maintaining a state of being located in the middle of the first virtual magnetic pole 21L, and in the middle of the second permanent magnet 52R connected by the second magnetic field line G2 and the second virtual magnetic pole 21R.

  Next, the operation of the electric motor M when the inner rotor 14 is rotated while the outer rotor 13 is fixed will be described with reference to FIGS. 15 and 16.

  First, as shown in FIG. 16A, the first induction magnetic poles 38L are opposed to the first permanent magnets 52L, and the second induction magnetic poles 38R are adjacent to each other two second permanent magnets 52R. .., The first and second rotating magnetic fields are rotated downward in the figure. At the start of the rotation, the polarities of the first virtual magnetic poles 21L ... are made different from the polarities of the first permanent magnets 52L ... facing each other, and the polarities of the second virtual magnetic poles 21R ... The same as the polarity of the two permanent magnets 52R.

  From this state, when the virtual permanent magnets 21 are rotated to the positions shown in FIG. 16B, the first magnetic lines G1 between the first induction magnetic poles 38L and the first virtual magnetic poles 21L are bent, and As the second virtual magnetic poles 21R approach the second induction magnetic poles 38R, second magnetic lines G2 that connect the second virtual magnetic poles 21R, second induction magnetic poles 38R, and second permanent magnets 52R are generated. As a result, in the first and second permanent magnets 52L, 52R, the virtual permanent magnet 21, and the first and second induction magnetic poles 38L, 38R, a magnetic circuit as shown in FIG. Composed.

  In this state, although the total magnetic flux of the first magnetic lines G1 between the first permanent magnets 52L and the first induction magnetic poles 38L is high, the first magnetic lines G1 are straight, so the first induction magnetic poles 38L. However, no magnetic force is generated to rotate the first permanent magnets 52L. Further, since the distance between the second permanent magnets 52R ... and the second virtual magnetic poles 21R ... having different polarities is relatively long, the second magnetic field lines between the second induction magnetic poles 38R ... and the second permanent magnets 52R ... Although the total magnetic flux amount of G2 is relatively small, the bending degree is large, so that a magnetic force is applied to the second permanent magnets 52R, so as to bring them close to the second induction magnetic poles 38R. Accordingly, the second permanent magnets 52R are driven together with the first permanent magnets 52L in the rotational direction of the virtual permanent magnets 21, that is, in the direction opposite to the magnetic field rotational direction (upward in FIG. 16), as shown in FIG. Rotate toward the position shown in As a result, the inner rotor 14 rotates in the direction opposite to the magnetic field rotation direction.

  While the first and second permanent magnets 52L, 52R,... Rotate from the position shown in FIG. 16 (B) toward the position shown in FIG. 16 (C), the virtual permanent magnets 21 ... are shown in FIG. Rotate toward the position shown in As described above, as the second permanent magnets 52R approach the second induction magnetic poles 38R ..., the degree of bending of the second magnetic lines G2 between the second induction magnetic poles 38R ... and the second permanent magnets 52R ... becomes small. However, as the virtual permanent magnets 21 further approach the second induction magnetic poles 38R, the total magnetic flux amount of the second magnetic lines of force G2 increases. As a result, in this case as well, a magnetic force is applied to the second permanent magnets 52R... So as to bring them closer to the second induction magnetic poles 38R, thereby causing the second permanent magnets 52R. .. And the magnetic field rotation direction.

  Further, as the first permanent magnets 52L rotate in the direction opposite to the magnetic field rotation direction, the first permanent magnetic lines G1 between the first permanent magnets 52L ... and the first induction magnetic poles 38L ... A magnetic force is applied to the magnets 52L to bring them close to the first induction magnetic poles 38L. However, in this state, the magnetic force caused by the first magnetic field line G1 is weaker than the magnetic force caused by the second magnetic field line G2 because the degree of bending of the first magnetic field line G1 is smaller than that of the second magnetic field line G2. As a result, the second permanent magnets 52R are driven together with the first permanent magnets 52L in a direction opposite to the magnetic field rotation direction by the magnetic force corresponding to the difference between the two magnetic forces.

  Then, as shown in FIG. 16D, the distance between the first permanent magnets 52L ... and the first induction magnetic poles 38L ... and the distance between the second induction magnetic poles 38R ... and the second permanent magnets 52R ... Are substantially equal to each other, the total magnetic flux amount and the degree of bending of the first magnetic lines G1 between the first permanent magnets 52L ... and the first induction magnetic poles 38L ... are the second induction magnetic poles 38R ... and the second permanent magnets 52R. Are approximately equal to the total amount of magnetic flux and the degree of bending of the second magnetic field lines G2 between them.

  As a result, the first and second permanent magnets 52L, 52R,... Are temporarily not driven when the magnetic forces caused by the first and second magnetic lines G1, G2 are substantially balanced with each other.

  When the virtual permanent magnets 21... Rotate from this state to the position shown in FIG. 17E, the state of generation of the first magnetic lines of force G1 changes, and a magnetic circuit as shown in FIG. As a result, the magnetic force caused by the first magnetic field lines G1 hardly acts so as to bring the first permanent magnets 52L close to the first induction magnetic poles 38L, so that the second permanent magnets are caused by the magnetic force caused by the second magnetic field lines G2. 52R, together with the first permanent magnets 52L, are driven in the direction opposite to the magnetic field rotation direction to the position shown in FIG.

  When the virtual permanent magnets 21 are slightly rotated from the position shown in FIG. 17G, the first magnetic lines G1 between the first permanent magnets 52L and the first induction magnetic poles 38L are reversed from the above. The resulting magnetic force acts on the first permanent magnets 52L, so as to be close to the first induction magnetic poles 38L, so that the first permanent magnets 52L ... together with the second permanent magnets 52R ... Driven in the reverse direction, the inner rotor 14 rotates in the direction opposite to the magnetic field rotation direction. When the virtual permanent magnets 21 are further rotated, the magnetic force resulting from the first magnetic lines G1 between the first permanent magnets 52L and the first induction magnetic poles 38L, the second induction magnetic poles 38R and the second permanent magnets 52R. The first permanent magnets 52L are driven together with the second permanent magnets 52R in a direction opposite to the magnetic field rotation direction by a magnetic force corresponding to a difference in magnetic force caused by the second magnetic field lines G2 between the first permanent magnet 52L and the second permanent magnet 52R. After that, when the magnetic force caused by the second magnetic field lines G2 hardly acts so as to bring the second permanent magnets 52R to the second induction magnetic poles 38R ..., the first permanent magnets 52L are caused by the magnetic force caused by the first magnetic field lines G1. Are driven together with the second permanent magnets 52R.

  As described above, with the rotation of the first and second rotating magnetic fields, the magnetic force caused by the first magnetic field lines G1 between the first permanent magnets 52L and the first induction magnetic poles 38L, and the second induction magnetic poles 38R. The magnetic force caused by the second magnetic field line G2 between the first permanent magnets 52R and the second permanent magnets 52R, and the magnetic force corresponding to the difference between these magnetic forces are applied to the first and second permanent magnets 52L, 52R, that is, the inner rotor. 14, the inner rotor 14 rotates in the direction opposite to the magnetic field rotation direction. In addition, when the magnetic force, that is, the driving force acts alternately on the inner rotor 14 as described above, the torque of the inner rotor 14 becomes substantially constant.

  In this case, the inner rotor 14 rotates in reverse at the same speed as the first and second rotating magnetic fields. This is because the first and second induction magnetic poles 38L,..., 38R... Are intermediate between the first permanent magnets 52L and the first virtual magnetic poles 21L due to the magnetic force caused by the first and second magnetic lines of force G1 and G2. , And the second permanent magnets 525L,..., 52R... Rotate while maintaining the state of being positioned between the second permanent magnets 52R.

  As described above, the case where the inner rotor 14 is fixed and the outer rotor 13 is rotated in the magnetic field rotation direction and the case where the outer rotor 13 is fixed and the inner rotor 14 is rotated in the direction opposite to the magnetic field rotation direction have been described separately. Of course, both the inner rotor 14 and the outer rotor 13 can be rotated in opposite directions.

  As described above, when rotating either one of the inner rotor 14 and the outer rotor 13 or both the inner rotor 14 and the outer rotor 13, depending on the relative rotational positions of the inner rotor 14 and the outer rotor 13, The magnetization states of the first and second induction magnetic poles 38L,..., 38R,... Can be rotated without causing slippage, and function as a synchronous machine. The first virtual magnetic poles 21L, the first permanent magnets 52L, and the first induction magnetic poles 38L are set to have the same number, the second virtual magnetic poles 21R, the second permanent magnets 52R, and the second induction magnetic poles. 38R is set to be equal to each other, the torque of the electric motor M can be sufficiently obtained when either the inner rotor 14 or the outer rotor 13 is driven.

  Thus, according to the electric motor M of the present embodiment, the outer rotor 13 includes both the first outer rotor shaft 34 provided on the rotor body 31 and the second outer rotor shaft 36 provided on the rotor cover 33. Since it is held and supported, the outer rotor 13 can be stably rotated.

  The outer rotor 13 is rotatably supported on the casing 11 by a pair of ball bearings 35, 37, and the inner rotor 14 is disposed by a pair of ball bearings 50, 51 disposed between the pair of ball bearings 35, 37. Since the outer rotor 13 and the inner rotor 14 are directly supported by the casing 11 in a freely rotatable manner, the dimension in the direction of the axis L of the electric motor M can be reduced.

  This is because if the inner rotor 14 is directly supported on the casing 11 by the pair of ball bearings 50, 51, the ball bearings 50, 51 can be disposed between the pair of ball bearings 35, 37 of the outer rotor 13. This is because it must be arranged outside the pair of ball bearings 35 and 37 of the outer rotor 13 in the direction of the axis L.

  The first resolver 42 that detects the rotational position of the outer rotor 13 and the second resolver 56 that detects the rotational position of the inner rotor 14 are both concentrated on one end side in the direction of the axis L, that is, on the lid portion 17 side of the casing 11. Since the first and second resolvers 42 and 56 are simply removed, it is possible to perform operations such as inspection, repair, assembly, and replacement at the same time, and the convenience is greatly improved. Further, the harnesses of the first and second resolvers 42 and 56 can be easily routed.

  In the outer rotor 13, the outer peripheral surfaces and inner peripheral surfaces of the first and second induction magnetic poles 38L, 38R,... Are exposed on the outer peripheral surface and the inner peripheral surface of the rotor body 31, respectively. The air gap α with respect to 12L and 12R and the air gap β with respect to the first and second cores 48L and 48R of the inner rotor 14 can be minimized to increase the magnetic efficiency.

  Further, since the first induction magnetic poles 38L and the second induction magnetic poles 38R are arranged in the same phase in the circumferential direction, the first and second induction magnetic poles 38L ..., 38R are arranged in different phases in the circumferential direction. Compared to the case, not only is the structure of the rotor body 31 of the outer rotor 13 supporting the first and second induction magnetic poles 38L, 38R,... Simplified, but also the strength of the rotor body 31 is improved.

  In particular, the first and second induction magnetic poles 38L ..., 38R ... and the spacers 39 ... are supported by the rotor body 31 with respect to the convex portions 31b, 31b of the slit 31a of the rotor body 31. , 38R and the recesses 38a, 38a; 39a; 39b of the spacer 39 are inserted while sliding in the direction of the axis L, so that the assembling work is facilitated, and a special fixing means such as a bolt is provided. It becomes unnecessary and can contribute to the reduction of the number of parts and the simplification of the structure. In addition, it is possible to reliably prevent the first and second induction magnetic poles 38L and 38R and the spacer 39 from falling off in the radial direction due to the centrifugal force generated by the rotation of the outer rotor 13.

  In addition, since the recesses 38a ... are formed in the first and second induction magnetic poles 38L ..., 38R ..., unnecessary portions of the first and second induction magnetic poles 38L ..., 38R ... are shaved by the recesses 38a ... Hysteresis loss can be reduced.

  As shown in FIG. 11, the magnetic flux passes between the first armatures 21L of the first stator 12L and the first permanent magnets 52L of the inner rotor 14 via the first induction magnetic poles 38L of the outer rotor 13. In the state where the first induction magnetic poles 38L ... exist at the positions indicated by the chain lines, the magnetic flux is short-circuited from the first permanent magnets 52L ... to the adjacent first permanent magnets 52L ... via the first induction magnetic poles 38L ... As a result, there is a problem that the magnetic efficiency is lowered. This problem similarly occurs in the second armatures 21R, the second permanent magnets 52R, and the second induction magnetic poles 38R.

  Therefore, in the present embodiment, as shown in FIG. 10, each of the first and second inductions from the axis L rather than the mechanical angle θ0 corresponding to the electrical angle 180 ° of the first and second permanent magnets 52L. An angle θ2 formed by two straight lines drawn at both ends in the circumferential direction of the magnetic poles 38L and 38R is set small. Θ1 is an angle formed by two straight lines drawn from the axis L to both ends in the circumferential direction of the first and second permanent magnets 52L and 52R, and the relationship between the three angles is θ0> θ1 ≧ θ2. . By doing so, a magnetic short circuit between the two first permanent magnets 52L and 52L adjacent in the circumferential direction or a magnetic short circuit between the two second permanent magnets 52R and 52R adjacent in the circumferential direction is minimized. be able to.

  Next, a second embodiment of the present invention will be described with reference to FIG.

  In the first embodiment, the shapes of the first and second induction magnetic poles 38L, 38R, and the concave portions 38a of the spacer 39, and the shape of the convex portions 31b of the slit 31a of the rotor body 31 are formed. Although a quadrangular shape is used, a similar effect can be achieved by using a triangular shape as shown in FIG. 18 (A) or a U shape as shown in FIG. 18 (B).

  The positions of the concave portions 38a, 39a, and the convex portions 31b are reversed, and convex portions are formed on the first and second induction magnetic poles 38L, 38R, and the spacer 39 side, and the concave portions are formed on the slit 31a. Even if formed, it is the same that the first and second induction magnetic poles 38L,. However, as in the embodiment, by forming the recesses 38a on the first and second induction magnetic poles 38L ..., 38R ... side, compared to the case of forming the recesses on the slit 31a ... side, the vortex loss and hysteresis loss are reduced. Can be reduced.

  19 to 21 show a third embodiment of the present invention. FIG. 19 is a view corresponding to FIG. 6, FIG. 20 is a sectional view taken along line 20-20 in FIG. 19, and FIG. It is a 21-21 line sectional view.

  In the third embodiment, circumferentially extending grooves 39b are formed on the surfaces of the spacers 39 of the outer rotor 13, and the grooves 39b of the spacers 39 are formed on the outer peripheral surface of the rotor body 31 of the outer rotor 13. Are formed by fitting a ring 59 made of a weak magnetic material into the grooves 39b, 31d.

  When the outer rotor 13 rotates, centrifugal force acts on the first and second induction magnetic poles 38L, 38R, and the spacers 39, and tries to deform so that the intermediate portion in the axis L direction of the rotor body 31 swells. However, the deformation can be prevented by pressing the intermediate portion of the rotor body 31 in the axis L direction with the ring 59.

  Next, a fourth embodiment of the present invention will be described with reference to FIG.

  In the fourth embodiment, the first permanent magnet 52L or the second permanent magnet 52R constituting one magnetic pole of the inner rotor 14 is divided into two. In this case, in order for two permanent magnets to form one magnetic pole, the two permanent magnets must have the same polarity.

  In this case, θ0 corresponding to the electrical angle 180 ° of the magnetic pole of the inner rotor 14 passes between adjacent pairs when the two permanent magnets 52L and 52L (or 52R and 52R) constituting one magnetic pole are paired. It is defined as the angle formed by two radial lines.

  Next, a fifth embodiment of the present invention will be described with reference to FIG.

  In the first to fourth embodiments described above, the present invention is applied to the rotary electric motor M, but in the fifth embodiment, the present invention is applied to a linear motion electric motor M (so-called linear motor). It is a thing.

  In this case, as shown in FIG. 12, the linear first magnetic pole array composed of the first and second armatures 21L,..., 21R, and the first and second permanent magnets 52L, 52R,. Between the linear second magnetic pole row, the linear induction magnetic pole row formed by the first and second induction magnetic poles 38L,. Therefore, when the first and second armatures 21L, 21R, ... are energized to generate a moving magnetic field in the first magnetic pole row, one or both of the second magnetic pole row and the induction magnetic pole row can be moved in the linear direction. it can.

  Therefore, as shown in FIG. 23, the first and second induction magnetic poles 38L of the induction magnetic pole array are larger than the distance L0 corresponding to the electrical angle 180 ° of the first and second permanent magnets 52L. .., 38R... By reducing the distance L2 between both ends in the linear direction, the first magnetic pole 52L (or the second permanent magnet 52R...) Adjacent in the linear direction of the second magnetic pole array Magnetic efficiency can be increased by suppressing the occurrence of a magnetic short circuit through the first induction magnetic poles 38L (or the second induction magnetic poles 38R).

  Next, a sixth embodiment of the present invention will be described based on FIG. 24 and FIG.

  In the sixth embodiment, the present invention is applied to a magnetic gear, and the first and second stators 12L and 12R are first and second permanent magnets instead of the first and second armatures 21L. 60L ..., 60R ... are provided. When one of the inner rotor 14 and the outer rotor 13 is driven in a state where the first and second stators 12L and 12R are fixed, a power transmission mechanism can be configured by rotating the other accordingly. If the inner rotor 14 is fixed, the driving force can be transmitted between the first and second stators 12L and 12R and the outer rotor 13, and if the outer rotor 13 is fixed, the first and second stators 12L and 12R. The driving force can be transmitted between the inner rotor 14 and the inner rotor 14 so that they can function as a differential device if they can be rotated.

  Also in this embodiment, as shown in FIG. 25 (A), θ0 corresponding to an electrical angle of 180 ° of the first and second permanent magnets 52L,. The angle θ2 formed by two straight lines drawn at both ends in the circumferential direction of the second induction magnetic poles 38L and 38R, and two pieces drawn from the axis L at both ends in the circumferential direction of the first and second permanent magnets 52L and 52R. Is set so as to have a relation of θ0 <θ1 ≦ θ2.

  Similarly, as shown in FIG. 25B, θ0 corresponding to an electrical angle of 180 ° of the first and second permanent magnets 60L,... 60R of the first and second stators 12L, 12R is The first and second induction magnetic poles 38L and 38R are drawn from both ends in the circumferential direction of the first and second permanent magnets 60L and 60R from the angle θ2 formed by two straight lines drawn at both ends in the circumferential direction and the axis L. The angle θ1 between the two straight lines is set to have a relationship of θ0 <θ1 ≦ θ2.

  The embodiments of the present invention have been described above, but various design changes can be made without departing from the scope of the present invention.

  For example, although the electric motor M and the magnetic gear are illustrated in the embodiment, the present invention is also applied to a generator that generates an electromotive force in the stator by fixing one of the outer rotor and the inner rotor and rotating the other. can do.

  In the embodiment, the stators 12L, 12R disposed on the radially outer side are provided with the armatures 21L,..., 21R, and the inner rotor 14 disposed on the radially inner side are provided with the permanent magnets 52L,. The stator having the armatures 21L,..., 21R,..., And the outer rotor having the permanent magnets 52L, 52R,.

  In the embodiment, the stators 12L and 12R, the outer rotor 13 and the inner rotor 14 are arranged in the radial direction (radial arrangement), but they may be arranged in the axis L direction. That is, a stator having an armature and a rotor having a permanent magnet may be arranged (axial arrangement) on both sides in the axis L direction of the rotor having an induction magnetic pole.

  The windings of the stators 12L and 12R in the embodiment are concentrated windings, but they may be distributed windings.

  The number of pole pairs of the first and second stators 12L and 12R, the outer rotor 13 and the inner rotor 14 is not limited to the embodiment, and can be changed as appropriate.

The front view which looked at the electric motor which concerns on 1st Embodiment in the axial direction (1-1 line arrow view of FIG. 2) 2-2 sectional view of FIG. 3-3 sectional view of FIG. Sectional view along line 4-4 in FIG. View taken along line 5-5 in FIG. 6-6 arrow view of FIG. Exploded perspective view of electric motor Disassembled perspective view of outer rotor Disassembled perspective view of inner rotor 10 enlarged view of FIG. The figure explaining the magnetic short circuit of the permanent magnet of the inner rotor 14 Schematic diagram of electric motor deployed in the circumferential direction Explanation of operation when inner rotor is fixed (Part 1) (2) of operation explanatory diagram when the inner rotor is fixed (3) of operation explanatory diagram when the inner rotor is fixed Explanation of operation when outer rotor is fixed (No. 1) (2) of operation explanatory diagram when the outer rotor is fixed The figure which shows the shape of the convex part of a spacer based on 2nd Embodiment The figure corresponding to the said FIG. 6 based on 3rd Embodiment. 19 is a sectional view taken along line 20-20 in FIG. A sectional view taken along line 21-21 in FIG. The figure corresponding to the said FIG. 10 based on 4th Embodiment. The figure corresponding to the said FIG. 10 based on 5th Embodiment The figure corresponding to the said FIG. 3 based on 6th Embodiment The principal part enlarged view of FIG.

Explanation of symbols

21L 1st armature (magnetic pole of 1st magnetic pole row, armature)
21R second armature (magnetic pole of first magnetic pole row, armature)
38L 1st induction magnetic pole (induction magnetic pole)
38R Second induction magnetic pole (induction magnetic pole)
52L 1st permanent magnet (magnetic pole of 2nd magnetic pole row)
52R second permanent magnet (magnetic pole of the second magnetic pole row)
L Axis L0 Distance L2 Distance θ0 Mechanical angle θ2 Angle

Claims (5)

A plurality of soft magnetic bodies between a first magnetic pole array in which a plurality of magnetic poles (21L, 21R) are arranged in the circumferential direction and a second magnetic pole array in which the plurality of magnetic poles (52L, 52R) are arranged in the circumferential direction In a magnetic machine having an induction magnetic pole array in which induction magnetic poles (38L, 38R) made in the circumferential direction are arranged,
A mechanical angle corresponding to an electrical angle of 180 ° of the magnetic poles (21L, 21R) of the first magnetic pole row, and a mechanical angle (θ0) corresponding to an electrical angle of 180 ° of the magnetic poles (52L, 52R) of the second magnetic pole row. A magnetic machine characterized in that the angle (θ2) formed by the circumferential ends of the induction magnetic poles (38L, 38L) of the induction magnetic pole row with respect to the axis (L) is smaller than at least one of the magnetic poles. Made of a plurality of soft magnetic materials between a first magnetic pole array in which a plurality of magnetic poles (21L, 21R) are arranged in a linear direction and a second magnetic pole array in which a plurality of magnetic poles (52L, 52R) are arranged in a linear direction. In a magnetic machine having an induction magnetic pole array in which induction magnetic poles (38L, 38R) are arranged in a linear direction,
At least a distance corresponding to an electrical angle of 180 ° of the magnetic poles (21L, 21R) of the first magnetic pole row and a distance (L0) corresponding to an electrical angle of 180 ° of the magnetic poles (52L, 52R) of the second magnetic pole row. A magnetic machine characterized in that the distance (L2) between both ends in the linear direction of the induction magnetic poles (38L, 38L) of the induction magnetic pole row is made smaller than one.   One of the first magnetic pole row and the second magnetic pole row is constituted by a plurality of armatures (21L, 21R), and a moving magnetic field is generated by controlling energization of the plurality of armatures (21L, 21R). The magnetic machine according to claim 1, wherein at least one of the other of the first magnetic pole row and the second magnetic pole row and the induction magnetic pole row is moved.   One of the first magnetic pole array and the second magnetic pole array is constituted by a plurality of armatures (21L, 21R), and at least one of the other of the first magnetic pole array and the second magnetic pole array and the induction magnetic pole array 3. The magnetic machine according to claim 1, wherein an electromotive force is generated in the plurality of armatures (21 </ b> L, 21 </ b> R) by being moved by an external force. 4.   2. At least one of the other two is moved by moving at least one of the first magnetic pole row, the second magnetic pole row, and the induction magnetic pole row with an external force. Or the magnetic machine of Claim 2.

Images