JP2010093911A - Electric machine device and device using electric machine device - Google Patents

Abstract

An object of the present invention is to realize an electromechanical device having satisfactory performance by improving torque balance between phases.
A two-phase electromechanical device 100 includes 4 × N (N is a natural number) electromagnetic coils 30A and 30B forming the two phases and the 4 × N electromagnetic coils. And 6 × N permanent magnets 20 arranged so as to have the same distance from the 4 × N electromagnetic coils.
[Selection] Figure 1

Description

  The present invention relates to an electromechanical device such as a motor or a generator and an application device thereof.

  The brushless electromechanical device is a term having a meaning including a brushless motor and a brushless generator. As a brushless motor, for example, one described in Patent Document 1 below is known.

JP 2001-298882 A

  Conventionally, the actual situation is that the arrangement of electromagnetic coils in electromechanical devices has not been sufficiently devised. As a result, the torque balance between the phases may deteriorate. As a result, it may be difficult to realize an electromechanical device with sufficient performance.

  An object of the present invention is to solve at least one of the above-described problems, improve torque balance between phases, and realize an electromechanical device having sufficient performance.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

[Application Example 1]
An electric two-phase electromechanical device, wherein the 4 × N (N is a natural number) electromagnetic coils forming the two phases and the 4 × N electromagnetic coils are disposed within the range. An electromechanical device comprising: 6 × N permanent magnets arranged so as to have the same distance from × N electromagnetic coils.
According to this application example, for each phase, the permanent magnet and the electromagnetic coil can be easily arranged so that the distance between the permanent magnet and the electromagnetic coil is the same. As a result, it is possible to improve the torque balance between the phases and realize an electromechanical device having sufficient performance.

[Application Example 2]
In the electromechanical device according to Application Example 1, the electromagnetic coil is a coreless coil, and a distance between two effective coil portions excluding a coil end portion of the electromagnetic coil is equal to a magnetic pole pitch of the permanent magnet. , Electromechanical devices.
According to this application example, it is possible to improve the balance between the arrangement of the permanent magnet and the electromagnetic coil. As a result, it is possible to improve the torque balance between the phases.

[Application Example 3]
In Application Example 1, the electromagnetic coil has a core, and a distance between the core of the first electromagnetic coil among the electromagnetic coils and the core of the second electromagnetic coil adjacent to the first electromagnetic coil. Is an electromechanical device equal to 1.5 times the magnetic pole pitch of the permanent magnet.
According to this application example, when the electromagnetic coil has a core, the magnetic flux passing through the electromagnetic coil passes through the core. Therefore, in relation to the magnetic pole pitch of the permanent magnet, the balance between the arrangement of the permanent magnet and the electromagnetic coil can be improved by setting the distance between the core to 1.5 times the magnetic pole pitch of the permanent magnet. .

[Application Example 4]
A single-phase electromechanical device, in which 2 × M electromagnetic coils (M is a natural number) and the 2 × M electromagnetic coils in a range where the 2 × M electromagnetic coils are arranged, And 6 × M permanent magnets arranged so as to have the same distance.
In the case of a single-phase electromechanical device, the arrangement balance between the electromagnetic coil and the permanent magnet can be improved by providing 2 × M electromagnetic coils and 6 × M permanent magnets. Become.

[Application Example 5]
The electromechanical device according to Application Example 4, further comprising a back yoke at a position overlapping the electromagnetic coil.
According to this application example, it is possible to improve the startability of the electromechanical device.

[Application Example 6]
In the electromechanical device according to any one of the application examples 1 to 5, the rotor in which one of the permanent magnet or the electromagnetic coil is disposed, the stator in which the other of the permanent magnet or the electromagnetic coil is disposed, An electromechanical device comprising:
According to this application example, the electromechanical device may be a so-called rotary electromechanical device.

[Application Example 7]
In the electromechanical device according to any one of Application Example 1 to Application Example 5, a rail in which one of the permanent magnet or the electromagnetic coil is disposed, and the other of the permanent magnet or the electromagnetic coil is disposed on the rail. An electromechanical device comprising:
According to this application example, the electromechanical device may be an electromechanical device in which a moving body moves on a rail, a so-called linear motor.

  The present invention can be realized in various forms. For example, in addition to an electromechanical apparatus, the electronic apparatus provided with the electromechanical apparatus, a fuel cell using apparatus, a robot, a moving body, and the like can be used in various forms. Can be realized.

First embodiment:
FIG. 1 is an explanatory view showing a motor according to a first embodiment of the present invention. 1A is a cross section cut by a plane parallel to the rotation axis, and FIG. 1B is a cross section cut by a plane perpendicular to the rotation axis (1B-1B cut plane). FIG. 1C is a development view in which the permanent magnet is developed in the circumferential direction, and FIG. 1D is a development view in which the electromagnetic coil is turned in the circumferential direction.

  The motor 100 is an inner rotor type motor in which a substantially cylindrical stator 60 is disposed outside and a substantially cylindrical rotor 50 is disposed inside. The stator 60 has a plurality of electromagnetic coils 30 </ b> A and 30 </ b> B arranged along the inner periphery of the casing 130. In this embodiment, as shown in FIG. 1D, there are four electromagnetic coils 30A and 30B in total, two each, and are arranged alternately. Further, magnetic sensors 40A and 40B as position sensors for detecting the phase of the rotor 50 are arranged on the stator 60 in correspondence with the electromagnetic coils 30A and 30B (FIG. 1A). The electromagnetic coils 30A and 30B and the magnetic sensors 40A and 40B are fixed on the circuit board 140. The circuit board 140 is fixed to the casing 130. The casing 130 may have a structure covered with a resin containing a soft magnetic powder material as a back yoke made of a soft magnetic material. Further, a back yoke made of a soft magnetic material may be provided between the casing 130 and the electromagnetic coils 30A and 30B.

  The rotor 50 has a permanent magnet 20 on its outer periphery, and a rotating shaft 110 is provided at the center of the rotor 50. The rotating shaft 110 is supported by a bearing portion 112. The permanent magnet 20 has six poles with six magnets. Each magnet is magnetized along the radial direction (radial direction) from the center of the rotating shaft 110 toward the outside. In this example, a coil spring 114 is provided inside the casing 130, and the permanent magnet 20 is positioned by the coil spring 114 pushing the permanent magnet 20 leftward in the drawing. However, the coil spring 114 can be omitted. The distance between the permanent magnet 20 and the electromagnetic coil 30A is the same as the distance between the permanent magnet 20 and the electromagnetic coil 30B.

  As shown in FIG. 1D, the distance L2 between the two effective coil portions 32A excluding the coil end 31A of the electromagnetic coil 30A is the same as the magnetic pole pitch L1 of the permanent magnet 20 (FIG. 1C). It has become. The length of the distance L2 may be shorter than the length of the magnetic pole pitch L1. Since the electromagnetic coils 30A and 30B are within the range of the magnetic pole pitch of the permanent magnet 20, the force acting on the effective coil portion 32A can be used effectively. As a result, the efficiency of the motor 100 can be improved. In the above description, the relationship between the electromagnetic coils 30A and 30B and the permanent magnet 20 is described using the distance L2 between the effective coil portions 32A and the magnetic pole pitch L1, but the relationship between the two using other parameters. It is also possible to specify. For example, it can be considered that the magnitude of the parallax angle θ <b> 1 of the electromagnetic coil 30 </ b> A in the rotational direction and the magnitude of the parallax angle of one magnetic pole of the permanent magnet 20 as viewed from the center O of the rotor 50 are the same.

  The distance L3 between the center of the electromagnetic coil 30A and the center of the electromagnetic coil 30B is 1.5 times the length of the magnetic pole pitch L1. This value of 1.5 is derived from the number of magnets 6 of the permanent magnet 20 and the number of electromagnetic coils 30A, 30B of 4 (1.5 = 6/4). In the above description, the number of the electromagnetic coils 30A and 30B is 4 and the number of the permanent magnets 20 is 6. However, the number of the electromagnetic coils 30A and 30B and the number of the permanent magnets 20 are 4 × N, respectively. (N is a natural number) or 6 × N.

  FIG. 2 is an explanatory diagram showing the operation during normal rotation of the motor. FIG. 2A to FIG. 2H show a state in which the permanent magnet 20 is shifted to the right by ¼π. Here, among the electromagnetic coils 30 </ b> A and 30 </ b> B, the hatched electromagnetic coil indicates that it is excited, and the non-hatched electromagnetic coil indicates that it is not excited. The darkness of the hatching indicates the direction of the current in the excited electromagnetic coil (for example, the inorganic current is darkly hatched from “front to back” and the current direction is “lightly from front to back”. ). When the phase is 0, π, 2π, the electromagnetic coil 30A is not excited, and when the phase is 1 / 2π, 3 / 2π, the electromagnetic coil 30B is not excited. Thus, in the present embodiment, the electromagnetic coils 30A and 30B to be excited can be switched by the phase, and the permanent magnet 20 can be moved. In the present embodiment, the number of electromagnetic coils 30A and 30B and the number of magnetic poles of the permanent magnet 20 are 4 and 6, respectively. Therefore, the distance between the electromagnetic coil 30A and the permanent magnet 20, the electromagnetic coil 30B, The electromagnetic coils 30A and 30B can be arranged so that the distance of the permanent magnet 20 is the same. Then, it is possible to equalize the force (Lorentz force) that the electromagnetic coils 30A and 30B receive from the permanent magnet 20 by making the winding numbers of the electromagnetic coils 30A and 30B the same and making the wire diameters the same. Become. Thus, in the present embodiment, it is easy to improve the force applied to the electromagnetic coils 30A and 30B, that is, to improve the torque balance between the phases. As a result, the motor 100 having sufficient performance can be realized. In order to arrange the electromagnetic coils 30A and 30B so that the distance between the electromagnetic coil 30A and the permanent magnet 20 is the same as the distance between the electromagnetic coil 30B and the permanent magnet 20, the number of the electromagnetic coils 30A and 30B is set to be the same. The number of the magnetic poles of the permanent magnet 20 may be smaller than that of the permanent magnet 20, and the size of the electromagnetic coils 30A and 30B may be the same as or smaller than the size of the magnetic pole pitch of the permanent magnet 20.

  FIG. 3 is an explanatory diagram showing an operation during reverse rotation of the motor. FIG. 3A to FIG. 3H show a state where the permanent magnet 20 is shifted to the left by ¼π. The reverse rotation means that the direction of the current flowing through the electromagnetic coils 30A, 30B is different from the normal rotation only in the direction of movement of the permanent magnet 20 because only the polarity is different.

Second embodiment:
FIG. 4 is an explanatory view showing a second embodiment of the present invention. The second embodiment is a so-called axial gap type motor. FIG. 4A is a cross-sectional view taken along a plane parallel to the rotation axis of the motor 102. The main body of the motor 102 has a rotor 50 and a stator 60. Each of the rotor 50 and the stator 60 has a substantially disk shape.

  FIG. 4B is a horizontal sectional view of the rotor 50. The rotor 50 has a permanent magnet 20, and the permanent magnet 20 has six magnetic poles having a substantially fan shape. The rotor 50 is fixed to the rotating shaft 110. Here, the magnetization direction of each magnetic pole of the permanent magnet 20 is a direction parallel to the rotation axis 110.

  FIG. 4C is a horizontal sectional view of the stator 60. As shown in FIG. 4A, the stator 60 includes a plurality of electromagnetic coils 30A, a plurality of electromagnetic coils 30B, magnetic sensors 40A and 40B, a circuit board 140, and a drive circuit unit 500. In this example, two electromagnetic coils 30A and 30B are provided, and four electromagnetic coils 30A and 30B are provided, and each of them is wound in a substantially fan shape. As shown in FIG. 4A, the stator 60 is fixed to the casing 130.

  Thus, even in the so-called axial gap type motor 102, by providing six permanent magnets 20 and four electromagnetic coils 30A and 30B, the distance between the permanent magnet 20 and the electromagnetic coil 30A, the permanent magnet 20 and the electromagnetic It is easy to arrange the electromagnetic coils 30A and 30B around the permanent magnet 20 so that the distance of the coil 30B is the same. As a result, the force applied to the electromagnetic coils 30A and 30B can be easily balanced, and the motor 102 having sufficient performance can be realized.

Third embodiment:
FIG. 5 is an explanatory view showing a third embodiment of the present invention. The third embodiment is a so-called linear motor. 5A is a cross-sectional view taken along a plane parallel to the linear direction of the linear motor 104 (5A-5A cut plane). FIG. 5B is a plane perpendicular to the linear direction of the linear motor 104 ( It is sectional drawing cut | disconnected by 5B-5B cut surface.

  The linear motor 104 includes a moving body 52 and a rail 62. The rail 62 includes the permanent magnet 20. The permanent magnet 20 is magnetized in a direction perpendicular to the direction in which the rails 62 extend, and is arranged so that the N pole and the S pole appear alternately in the direction in which the rails 62 extend. Here, the permanent magnet 20 has six magnets within the range of the length L4. In addition, this length L4 is equal to the length of the part by which the electromagnetic coils 30A and 30B of the moving body 52 are arrange | positioned.

  The moving body 52 includes electromagnetic coils 30A and 30B and magnetic sensors 40A and 40B. In this embodiment, the moving body 52 includes two electromagnetic coils 30 </ b> A and 30 </ b> B in the length L <b> 4 and four in total, and the electromagnetic coils 30 </ b> A and 30 </ b> B are alternately arranged in the moving direction of the moving body 52. Has been placed. In FIG. 5A, the hatching attached to the electromagnetic coil 30A and the hatching attached to the electromagnetic coil 30B are changed.

  In the present embodiment, four electromagnetic coils 30A and 30B and six permanent magnets 20 are arranged within the length L4. Therefore, the distance L5 between the centers of the bundles of the coils in the direction in which the rails 62 of the electromagnetic coils 30A and 30B extend is the same as the length L6 of the magnetic pole pitch of the permanent magnet 20. By arranging in this way, the force applied to the electromagnetic coils 30A and 30B can be easily balanced, and the motor 104 having sufficient performance can be realized. In the present embodiment, the moving body 52 includes the electromagnetic coils 30A and 30B, and the rail 62 includes the permanent magnet 20. However, the moving body 52 includes the permanent magnet 20 and the rail includes the electromagnetic coils 30A and 30B. There may be. In the present embodiment, the rail 62 is disposed outside and the moving body 52 is disposed inside. However, the rail 62 may be disposed inside and the moving body 52 may be disposed outside. In such a case, the configuration may be such that the permanent magnet 20 is disposed on the rail 62 on the center side, and the electromagnetic coils 30A and 30B are provided in two rows as a pair with the electromagnetic coils 30A and 30B of the moving body 52 at both ends thereof. On the contrary, the electromagnetic coils 30 </ b> A and 30 </ b> B may be disposed on the rail 62 on the center side, and the permanent magnet 20 of the moving body 52 may be disposed on both ends thereof. As described above, in this embodiment, (a) which of the moving body 52 and the rail 62 is arranged on the center side, (b) the permanent magnet 20 and the electromagnetic coils 30A and 30B are respectively disposed on the moving body 52 and the rail 62. Depending on which one is arranged, a total of four modes are possible.

Fourth embodiment:
FIG. 6 is an explanatory view showing a fourth embodiment of the present invention. 6A is a cross-section cut by a plane parallel to the rotation axis, and FIG. 6B is a cross-section cut by a plane perpendicular to the rotation axis (6B-6B cut plane). 6C is a developed view in which the permanent magnet is developed in the circumferential direction, and FIG. 6D is a developed view in which the electromagnetic coil is turned in the circumferential direction. In the fourth embodiment, the cores 14A and 14B are provided in the electromagnetic coils 30A and 30B of the motor 100 of the first embodiment. The length of the pitch L7 between the core 14A and the core 14B is 1.5 times the length of the magnetic pole pitch L1 of the permanent magnet 20. When the cores 14A and 14B are provided, the magnetic flux passing through the electromagnetic coils 30A and 30B passes through the cores 14A and 14B. As a result, the electromagnetic coils 30A and 30B and the cores 14A and 14B function as electromagnets 33A and 33B. That is, the motor 106 is rotated by the magnetic force acting between the electromagnets 33 </ b> A and 33 </ b> B and the permanent magnet 20. In this case, it is possible to make the configurations of the electromagnet 33A and the electromagnet 33B equivalent by making the number of windings of the electromagnetic coils 30A and 30B the same and making the wire diameter of the windings the same. As a result, the force acting on the electromagnet 33A and the permanent magnet 20 and the force acting on the electromagnet 33B and the permanent magnet 20 can be balanced. Thereby, the efficiency of the motor 106 can be improved.

  FIG. 7 is an explanatory diagram when the electromagnetic coils 30A and 30B are respectively connected in series. FIG. 8 is an explanatory diagram when the electromagnetic coils 30A and 30B are connected in parallel. As described above, the connection of the electromagnetic coils 30A and 30B may be either in series or in parallel.

Fifth embodiment:
FIG. 9 is an explanatory diagram showing the fifth embodiment. The fifth embodiment is a single-phase motor 108. The motor 108 includes two electromagnetic coils 30, a permanent magnet 20, a magnetic sensor 40, and a back yoke 70. The permanent magnet 20 has six magnets. The back yoke 70 is disposed on the back side of the electromagnetic coil 30. Here, since the timings of FIGS. 9C and 9G are deadlock points, if the permanent magnet 20 is stationary at this timing, the startability of the motor 108 is poor. However, by providing the back yoke 70, the motor 108 can stop the permanent magnet 20 at the timing shown in FIGS. 9A and 9E when stopped. As a result, reliable and good startability can be obtained. According to the present embodiment, even when the number of electromagnetic coils 30 is two and the number of permanent magnets 20 is six, the force acting on each electromagnetic coil 30 and the permanent magnet 20 is balanced, The efficiency of the motor 108 can be improved. In this embodiment, the number of electromagnetic coils 30 is two and the number of permanent magnets 20 is six. However, when the number of electromagnetic coils 30A and 30B is 2 × M (M is a natural number). The number of permanent magnets 20 may be 6 × M.

  FIG. 10 is a block diagram illustrating a configuration of a control circuit of the brushless electric machine according to the embodiment. This control circuit includes a CPU system 300, a drive signal generation unit 200, a drive driver unit 210, a regeneration control unit 220, a capacitor 230, and a power storage control unit 240. The drive signal generation unit 200 generates a drive signal to be supplied to the drive driver unit 210.

  FIG. 11 is a circuit diagram showing a configuration of the drive driver unit 210. The drive driver unit 210 constitutes an H-type bridge circuit. From the drive signal generation unit 200, one of the first drive signal DRVA1 and the second drive signal DRVA2 is supplied to the drive driver unit 210. Currents IA1 and IA2 shown in FIG. 10 indicate directions of currents (also referred to as “drive currents”) that flow in accordance with these drive signals DRVA1 and DRVA2. For example, in the case of a motor using a DC drive magnet module, when the current IA1 flows in response to the first drive signal DRVA1, the motor operates in a predetermined first drive direction, and the second drive signal When the current IA2 flows according to DRVA2, the motor operates in the second driving direction opposite to the first driving direction. In the case of a motor using an AC drive magnet module, the motor can be driven using the first and second drive signals DRVA1 and DRVA2 alternately.

  FIG. 12 is a circuit diagram showing an internal configuration of the regeneration control unit 220. The regeneration control unit 220 is connected to the electromagnetic coil 30 in parallel with the drive driver unit. The regeneration control unit 220 includes a rectifier circuit 222 formed of a diode and a switching transistor 224. When the switching transistor 224 is turned on by the power storage control unit 240, the power generated in the electromagnetic coil 30 can be regenerated to charge the battery 230. It is also possible to supply current from the capacitor 230 to the electromagnetic coil 30. Note that the regeneration control unit 220, the battery 230, and the power storage control unit 240 may be omitted from the control unit, or the drive signal generation unit 200 and the drive driver unit 210 may be omitted.

  Thus, in the brushless motors of the above-described embodiments, it is not necessary to overlap the electromagnetic coils between the phases, and each phase can easily realize a motor with high efficiency and stable characteristics by independent winding. Further, when the brushless electric machine is configured as a brushless generator, a highly efficient generator can be realized.

Variation:
The present invention is not limited to the above-described examples and embodiments, and can be implemented in various modes without departing from the gist thereof. For example, the following modifications are possible.

Modification 1:
In the above-described embodiments, specific examples of the mechanical configuration and circuit configuration of the brushless electric machine have been described. However, as the mechanical configuration and circuit configuration of the brushless electric machine of the present invention, any configuration other than these may be adopted. Is possible.

Modification 2:
The present invention can be applied to motors of various devices such as a fan motor, a timepiece (hand drive), a drum-type washing machine (single rotation), a roller coaster, and a vibration motor. When the present invention is applied to a fan motor, the various effects described above (low power consumption, low vibration, low noise, low rotation unevenness, low heat generation, long life) are particularly remarkable. Such fan motors are, for example, various devices such as digital display devices, in-vehicle devices, fuel cell computers, fuel cell digital cameras, fuel cell video cameras, fuel cell mobile phones, and other fuel cell equipment. It can be used as a fan motor for the device. The motor of the present invention can also be used as a motor for various home appliances and electronic devices. For example, the motor according to the present invention can be used as a spindle motor in an optical storage device, a magnetic storage device, a polygon mirror drive device, or the like. The motor according to the present invention can also be used as a motor for a moving body or a robot.

  FIG. 13 is an explanatory diagram showing a projector using a motor according to an application example of the invention. The projector 600 includes three light sources 610R, 610G, and 610B that emit light of three colors of red, green, and blue, and three liquid crystal light valves 640R, 640G, and 640B that modulate these three colors of light, respectively. A cross dichroic prism 650 that synthesizes the modulated three-color light, a projection lens system 660 that projects the combined three-color light onto the screen SC, a cooling fan 670 for cooling the inside of the projector, and the projector 600 And a control unit 680 for controlling the whole. As the motor for driving the cooling fan 670, the various brushless motors described above can be used.

  FIG. 14 is an explanatory view showing a fuel cell type mobile phone using a motor according to an application example of the present invention. FIG. 14A shows the appearance of the mobile phone 700, and FIG. 14B shows an example of the internal configuration. The mobile phone 700 includes an MPU 710 that controls the operation of the mobile phone 700, a fan 720, and a fuel cell 730. The fuel cell 730 supplies power to the MPU 710 and the fan 720. The fan 720 is used to supply air to the fuel cell 730 from the outside to the inside of the mobile phone 700 or to discharge moisture generated by the fuel cell 730 from the inside of the mobile phone 700 to the outside. It is. Note that the fan 720 may be disposed on the MPU 710 as shown in FIG. 14C to cool the MPU 710. As the motor for driving the fan 720, the various brushless motors described above can be used.

  FIG. 15 is an explanatory view showing an electric bicycle (electric assist bicycle) as an example of a moving body using a motor / generator according to an application example of the present invention. In this bicycle 800, a motor 810 is provided on the front wheel, and a control circuit 820 and a rechargeable battery 830 are provided on a frame below the saddle. The motor 810 assists running by driving the front wheels using the power from the rechargeable battery 830. Further, the electric power regenerated by the motor 810 is charged to the rechargeable battery 830 during braking. The control circuit 820 is a circuit that controls driving and regeneration of the motor. As the motor 810, the various brushless motors described above can be used.

  FIG. 16 is an explanatory diagram showing an example of a robot using a motor according to an application example of the present invention. The robot 900 includes first and second arms 910 and 920 and a motor 930. The motor 930 is used when horizontally rotating the second arm 920 as a driven member. As the motor 930, the above-described various brushless motors can be used.

  The embodiments of the present invention have been described above based on some examples. However, the above-described embodiments of the present invention are for facilitating the understanding of the present invention and limit the present invention. It is not a thing. The present invention can be changed and improved without departing from the spirit and scope of the claims, and it is needless to say that the present invention includes equivalents thereof.

It is explanatory drawing which shows the motor which concerns on 1st Example of this invention. It is explanatory drawing which shows the operation | movement at the time of forward rotation of a motor. It is explanatory drawing which shows the operation | movement at the time of reverse rotation of a motor. It is explanatory drawing which shows the 2nd Example of this invention. It is explanatory drawing which shows the 3rd Example of this invention. It is explanatory drawing which shows the 4th Example of this invention. It is explanatory drawing when electromagnetic coil 30A30B is connected in series, respectively. It is explanatory drawing when electromagnetic coil 30A30B is respectively connected in parallel. It is explanatory drawing which shows a 5th Example. It is a block diagram which shows the structure of the control circuit of the brushless electric machine in an Example. 3 is a circuit diagram showing a configuration of a drive driver unit 210. FIG. 3 is a circuit diagram showing an internal configuration of a regeneration control unit 220. FIG. It is explanatory drawing which shows the projector using the motor by the example of application of this invention. It is explanatory drawing which shows the fuel cell type mobile telephone using the motor by the example of application of this invention. It is explanatory drawing which shows the electric bicycle (electric assisted bicycle) as an example of the moving body using the motor / generator by the example of application of this invention. It is explanatory drawing which shows an example of the robot using the motor by the example of application of this invention.

Explanation of symbols

14A, 14B ... Core 20 ... Permanent magnet 30, 30A, 30B ... Electromagnetic coil 31A ... Coil end 32A ... Effective coil portion 33A, 33B ... Electromagnet 40, 40A, 40B ... Magnetic sensor 50 ... Rotor 52 ... Moving body 60 ... Stator 62 Rail 70 ... Back yoke 100, 102, 106, 108 ... Motor 104 ... Linear motor 110 ... Rotating shaft 112 ... Bearing 114 ... Coil spring 130 ... Casing 140 ... Circuit board 200 ... Drive signal generator 210 ... Drive driver 220 ... Regenerative control unit 222 ... rectifier circuit 224 ... switching transistor 230 ... capacitor 240 ... electric storage control unit 500 ... drive circuit unit 600 ... projector 610R ... light source 640R ... liquid crystal light valve 650 ... cross dichroic prism 660 ... projection lens System 670 ... cooling fan 680 ... control unit 700 ... cell phone 720 ... fan 730 ... fuel cell 800 ... bicycle 810 ... motor 820 ... control circuit 830 ... rechargeable battery 900 ... robot 910 ... first arm 920 ... second arm 930 ... Motor DRVA1 ... First drive signal DRVA2 ... Second drive signal

Claims (12)

A two-phase electromechanical device,
4 × N (N is a natural number) electromagnetic coils forming the two phases;
6 × N permanent magnets arranged so that the distance from the 4 × N electromagnetic coils is the same within the range in which the 4 × N electromagnetic coils are arranged;
An electromechanical device comprising: The electromechanical device according to claim 1,
The electromagnetic coil is a coreless coil,
The electromechanical device, wherein a distance between two effective coil portions excluding a coil end portion of the electromagnetic coil is equal to a magnetic pole pitch of the permanent magnet. The electromechanical device according to claim 1,
The electromagnetic coil has a core,
The distance between the core of the first electromagnetic coil of the electromagnetic coils and the core of the second electromagnetic coil adjacent to the first electromagnetic coil is 1.5 times the magnetic pole pitch of the permanent magnet. Equal, electromechanical device. A single-phase electromechanical device,
2 × M (N is a natural number) electromagnetic coils;
6 × M permanent magnets arranged so that the distance from the 2 × M electromagnetic coils is the same within the range in which the 2 × M electromagnetic coils are arranged;
An electromechanical device comprising: The electromechanical device according to claim 4, further comprising:
An electromechanical device comprising a back yoke at a position overlapping with the electromagnetic coil. The electromechanical device according to any one of claims 1 to 5,
A rotor on which one of the permanent magnet or the electromagnetic coil is disposed;
A stator in which the other of the permanent magnet or the electromagnetic coil is disposed;
An electromechanical device comprising: The electromechanical device according to any one of claims 1 to 5,
A rail in which one of the permanent magnet or the electromagnetic coil is disposed;
The other of the permanent magnet or the electromagnetic coil is disposed, and a moving body that moves on the rail,
An electromechanical device comprising: Electronic equipment,
An electronic device comprising the electromechanical device according to any one of claims 1 to 7. The electronic device according to claim 8,
The electronic device is an electronic device, which is a projector. Fuel cell equipment,
A fuel cell using device comprising the electromechanical device according to any one of claims 1 to 7. A robot,
A robot comprising the electromechanical device according to any one of claims 1 to 7. A moving object,
A moving body comprising the electromechanical device according to claim 1.

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