KR101659581B1 - EC motor driver for integrated - Google Patents

Abstract

The present invention relates to a driver integrated type EC motor, comprising: a housing; A shaft rotatably installed inside the housing by a bearing; An inner rotor which is key-engaged with the shaft and is inserted into the housing to install a ferrite magnet; A stator assembly disposed inside the housing and positioned at an outer periphery of the inner rotor to generate a rotating magnetic field to rotate the shaft and the inner rotor; A connection housing installed at one side of the housing; A PCB board installed at one side of the connection housing for controlling a power signal of the motor, a motor output, pulse width modulation, noise removal, and motor operation; And a cover which is coupled to one side of the connection housing and protects the main board and the control board. The SPM power conversion module and the drive gate circuit are incorporated to facilitate the gate signal processing required in the inverter, There is an effect of providing a driver-integrated type EC motor using six switches for a full bridge circuit and a magnetic hall sensor for sensing and controlling the real time speed of the motor.

Description

EC motor driver for integrated < RTI ID = 0.0 >

The present invention relates to a driver-integrated type EC motor for use in an air-conditioning and air-conditioning system, and more particularly to an EC motor integrated with a driver, In addition to the SPM power conversion module, a drive gate circuit is incorporated to facilitate the processing of the gate signal required by the inverter, while sensing six real-time speeds of the full bridge circuit and the motor, To a driver integrated type EC motor to which a magnetic hall sensor for controlling the speed is applied.

Generally, a BLDC motor (Brushless DC motor) is a rotary-type BLDC motor in which an armature winding is on the fixed side and a permanent magnet field is rotated.

The BLDC motor always has a sensor that detects the absolute position of the field stimulation and detects the position of the field stimulation at all times, and causes the current to flow sequentially through the armature winding by the signal.

The sequential switchover from one phase of the motor to another is determined by the phase of the armature and the position of the magnetic field at the moment the current is conducting.

It is a position detector that outputs six absolute position information per rotation electrically in a three-phase BLDC motor drive system. It is composed of a magnet and a Hall element of a magnetic encoder.

The torque and speed of the motor are controlled by the voltage and current supplied to the armature winding.

In BLDC motors, the magnitude of the armature current, the phase angle between the current and the counter electromotive force are controlled, the magnitude of the armature voltage, and the phase angle between the voltage and the counter electromotive force are controlled to control the torque and speed. Here, the phase of the armature current is matched with the base and phase of the counter electromotive force, and only the magnitude of the current is controlled.

In order to generate a constant torque without pulsation, a constant size spherical current proportional to the torque command is electrically maintained in a flat part of the trapezoidal counter electromotive force for 1/2 period and 120 degrees period.

Since a general BLDC motor requires a gate drive circuit as described above, it is separately constructed and used in connection with a BLDC motor. Therefore, there is a separate member installed on the side surface of the BLDC motor, and there is a problem that space is limited when installing the BLDC motor.

Also, it is not easy to install the BLDC motor by the peripheral members of the air conditioner or the air conditioner due to the member for separately installing the gate drive circuit in the BLDC motor.

Korean Patent Publication No. 2009-23308 (published on Mar. 4, 2009)

In order to solve the above-mentioned problems, the present invention provides a driver integrated type EC motor capable of realizing reliability improvement, high density integration, miniaturization and light weight by incorporating various detection circuits, a protection circuit, a drive circuit and a high- The purpose of this paper is to provide

In addition, the present invention incorporates a drive gate circuit in addition to the SPM power conversion module to facilitate the processing of gate signals required in the inverter, and at the same time, detects six real-time speeds of the full- And an object of the present invention is to provide a driver integrated type EC motor in which a magnetic hall sensor for controlling a driver is applied.

In order to achieve the above object, the present invention provides an EC motor integrated with a driver, comprising: a housing; A shaft rotatably installed inside the housing by a bearing; An inner rotor that is key-coupled to the shaft and is inserted into the inside of the housing to install a ferrite magnet; A stator assembly disposed inside the housing and positioned at an outer periphery of the inner rotor to generate a rotating magnetic field to rotate the shaft and the inner rotor; A connection housing in which a bushing is formed by forming a seating groove along a circumference at a portion coupled to the housing; The gate drive circuit is not constituted so that the overcurrent, the overheating, the short circuit, and the failure signal of the shortage of the control voltage are applied and the gating is blocked at the same time so that the device is safely installed on one side of the connection housing So that the motor (Em electric motor) has a maximum value of voltage when the motor power signal control, motor output, pulse width modulation, noise elimination, motor operation control and counter electromotive force are electrically constant over 1/2 period A PCB board for controlling the current Im (current maximum value) to flow through the flat portion of the counter electromotive force electrically for 1/2 period and 120 degrees period; And a cover coupled to one side of the connection housing and protecting the main board and the control board.

The inner rotor of the present invention is characterized in that a shaft coupling hole is formed in the inner center so as to be able to engage with the shaft from one side to the other and a key engagement hole is formed in the shaft coupling hole, A plurality of magnet mounting projections are formed on the outer periphery of the ferrite magnets to facilitate mounting of the ferrite magnets, a positioning groove is formed between the magnet mounting projections and the magnet mounting projections, and a position piece is formed in the positioning grooves .

The ferrite magnet of the present invention is characterized in that it is sloped to both sides with the center as the center.

The inner rotor and the ferrite magnet of the present invention are formed at angles and angles with respect to an angle formed obliquely to both sides of the center of the ferrite magnet and a plane inclined toward the magnet mounting protrusion in the position groove.

The stator assembly of the present invention includes: a stator made of an iron core; And the stator includes a stator coil wound around the stator so as to generate a rotating magnetic field by applying electricity.

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The PCB board of the present invention is installed in a seating groove formed on one side of a connection housing and outputs a power signal (U, V, W) of a three-phase EC motor to an EC motor according to a driving signal. A high density bus capable of supplying a single power supply of high power and capable of removing noise reflected from the outside and noise included in the inputted pulse width modulation signal; And a power board on which a VLSI microchip is mounted and the EC motor is stably driven by detecting the state of the current while the motor is operating and correcting the output, thereby providing a driver-integrated type EC motor.

The power board of the present invention includes a switched mode power supply (SMPS) that supplies necessary power to the PCB board; And a switching power conversion module that supplies main power to the motor.

In the power board of the present invention, a drive gate circuit is incorporated together with an SPM power conversion module to facilitate gate signal processing required for the inverter, and a switch for a full bridge circuit and a switch for sensing and controlling the real- And a magnetic hall sensor is applied.

The PCB board of the present invention includes a switch for a full bridge circuit processing a gate signal; And a magnetic hall sensor for sensing and controlling the real-time speed of the motor.

The PCB board of the present invention may further include a guide member spaced a predetermined distance from the inside of the connection housing and guiding installation of the PCB board and interruption of heat generated inside the housing.

INDUSTRIAL APPLICABILITY The driver-integrated type EC motor according to the present invention has an effect of realizing reliability improvement, high density integration, miniaturization and light weight by incorporating various detection circuits, a protection circuit, a drive circuit, and a high-density integrated circuit directly inside the motor .

In addition, the present invention includes a drive gate circuit together with an SPM power conversion module to facilitate the processing of gate signals required in the inverter, and at the same time, by means of six switches for a full bridge circuit and a magnetic hall sensor The speed of the motor is controlled by detecting the speed of the motor in real time.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram showing a driver integrated type EC motor according to the present invention. Fig.
Fig. 2 is a sectional view of a driver integrated type EC motor of Fig. 1; Fig.
Fig. 3 is a view showing a configuration of an inner rotor of the EC motor of Fig. 2; Fig.
4 is a view showing a structure in which the inner rotor and the stator assembly of FIG. 2 are combined.
Fig. 5 is a diagram showing a circuit configuration of an electric winding of the EC motor of Fig. 2
6 is a graph showing a change with respect to a current (i) according to the angular speed (wt) of the EC motor of Fig. 2;
7 is a view schematically showing the configuration of the PCB substrate of FIG. 2;

The present invention is capable of various modifications and various embodiments, and specific embodiments will be described in detail with reference to the drawings.

It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for similar elements in describing each drawing. The terms first, second, etc. may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, the term "and / or" includes any combination of a plurality of related listed items or any of a plurality of related listed items.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be construed as ideal or overly formal in meaning unless explicitly defined in the present application Should not.

The specific terminology used in the following description is provided to aid understanding of the present invention, and the use of such specific terminology may be changed into other forms without departing from the technical idea of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the structure of a driver integrated type EC motor according to the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a diagram showing a driver integrated type EC motor according to the present invention, Fig. 2 is a diagram showing a sectional configuration of the driver integrated type EC motor of Fig. 1, Fig. 3 is a diagram showing the configuration of an inner rotor of the EC motor of Fig. And FIG. 4 is a view showing a structure in which the inner rotor and the stator assembly of FIG. 2 are combined.

Referring to FIGS. 1 to 4, the driver integrated type EC motor is installed in an air conditioner or an air conditioner and is driven in combination with a fan at the time of warming, cooling, or air intake / exhaustion.

An EC motor installed in an air conditioner / air conditioner includes a housing (10); A shaft 20 rotatably installed inside the housing 10 by a bearing 21; An inner rotor 30 coupled to the shaft 20 by a key (not shown) and inserted into the housing 10 to install a ferrite magnet 36; A stator assembly 40 installed inside the housing 10 and positioned at an outer periphery of the inner rotor 30 to generate a rotating magnetic field to rotate the shaft 10 and the inner rotor 30; A connection housing 50 installed at one side of the housing 10; A PCB board 60 installed at one side of the connection housing 50 for controlling a power signal of the motor, motor output, pulse width modulation, noise removal, and motor operation; And a cover 70 which is coupled to one side of the connection housing 50 and protects the PCB board 60.

The housing 10 is formed with a shaft hole (not shown) through which the shaft 20 is inserted at one side, and is formed into a cylindrical shape with one side opened at the other side. The shaft 20 and the inner rotor 30 And is coupled to the inside. A plurality of fixing protrusions 11 are formed on one side of the housing 10 so as to be fixed to brackets or the like when the EC motor is installed and between the fixing protrusions 11 and the fixing protrusions 11 A plurality of first housing coupling protrusions 12 are formed so as to be able to engage with the coupling housing 50.

The shaft 20 may be formed in a circular shape, an octagonal shape or a polygonal shape, and more preferably an octagonal shape. In addition, the shaft 20 improves durability through high frequency heat treatment.

The shaft 20 is installed inside the housing 10 by a bearing 21 and rotates together with the inner rotor 30. A keyway (22) is formed on one surface of the shaft (20) to engage with the inner rotor (30). A key (not shown) is provided in the key groove 22 to engage with the inner rotor 30.

The inner rotor 30 is formed in a circular shape, an octagonal shape, or a polygonal shape as shown in the drawing, and preferably has an octagonal shape to facilitate the mounting of the ferrite magnets 36.

The inner rotor 30 is formed with a shaft coupling hole 31 penetrating from one side to the other in the inner center so as to be able to engage with the shaft 20, A key engagement groove 32 is formed so as to be coupled with a key at a time.

The shaft coupling hole 31 is formed in one of circular, octagonal, and polygonal shapes. The shaft coupling hole 31 is preferably formed in an octagonal shape so that the shaft coupling hole 31 can be easily engaged with the shaft 20, Thereby preventing the phenomenon and correct rotation.

The rotational force is generated by the action of the ferrite magnet 36 provided on the shaft 20. [ The inner rotor 30 includes a ferrite magnet 36, which is made of an iron core and is constantly installed to generate a rotating magnetic field by applying electricity. Since the inner rotor 30 can be easily configured by anyone skilled in the art in the EC motor, detailed description thereof will be omitted.

A plurality of magnet mounting projections 33 are formed on the outer periphery of the inner rotor 30 so that the ferrite magnets 36 can be easily installed. Between the magnet mounting projections 33 and the magnet mounting projections 33, And a position piece 35 is formed in the position groove 34 to further facilitate the installation of the ferrite magnet 36. [

The inner rotor 30 is controlled by the PCB board 60 to which the power is supplied and generates a rotating force. At this time, the inner rotor 30 rotates the ferrite magnet 36 It is installed in the leading edge.

The ferrite magnets 36 are inclined in both directions with respect to the center of the ferrite magnets 36. The angles of the inclined surfaces of the ferrite magnets 36 are inclined from the position grooves 34 of the inner rotor 30 toward the magnet mounting protrusions 33 Are formed at the same angle.

The connection housing 50 is coupled with the housing 10 and forms a seating groove 51 around the housing 10 and a bushing 53 is formed at a portion where the seating groove 51 is formed And maintain airtightness with the housing 10. The airtightness prevents water or foreign matter from entering the inside of the housing 10 to prevent a shot due to moisture or foreign matter and to smooth the rotation of the shaft 20. [

A coupling protrusion 52 is formed at a central portion of the connection housing 50 and a bearing 21 is installed on the coupling protrusion 52 to facilitate the rotation of the shaft 20.

Further, a hole guide (not shown) may be further provided in the connection housing 50. The hole guide is for facilitating electrical connection between the inner rotor 30 and the stator assembly 40.

One end of the shaft 20 mounted on the coupling protrusion 52 is positioned inside the coupling protrusion 52 so that the PCB board 60 can be easily installed on one side of the coupling housing 50 A space 54 is formed. In addition, one side of the connection housing 50 is formed in an open state.

The PCB board 60 is installed in a seating groove 51 formed at one side of the connection housing 50 and outputs power signals U, V and W of the three-phase EC motor to an EC motor A high density bus 62 and a VLSI microchip having a function of removing a noise included in an inputted pulse width modulation signal and a noise which is capable of supplying a single power supply of high power and reflected from the outside, And a power board 63 for sensing the state of the current while the EC motor is operating and correcting the output so that the EC motor can be stably driven.

The PCB board 60 is not directly installed in the space 54 of the connection housing 50 and the PCB board 60 is spaced a certain distance from the inside of the connection housing 50, A guide member (not shown) may be installed in order to block heat generated inside the heat exchanger.

The guide member is formed in a circular plate shape and divides a space where the inner rotor 30 and the stator assembly 40 and the PCB board 60 are installed to block heat.

The lid 70 is coupled to one side of the housing 10 and prevents foreign matter, water, and the like from entering the inside where the PCB board 60 is seated.

Fig. 5 is a diagram showing a circuit configuration of the electric winding of the EC motor of Fig. 2, Fig. 6 is a diagram showing a change with respect to the electric current i according to the angular speed (wt) of the EC motor of Fig. 2, FIG. 2 is a schematic view showing a configuration of a PCB substrate of FIG.

5 to 7, a driver integrated type EC motor according to the present invention includes a main board 61 for controlling and a power board 63 for supplying power, and the power board 63 is provided with an SMPS Switched mode power supply, which supplies the necessary power to the board, and the switching power conversion module that supplies the main power to the motor, adopts Integrated Smart Power Hybrid IC Module (SPM).

It incorporates a drive gate circuit with SPM power conversion module to facilitate the processing of the gate signal required for the inverter. It also has a switch for full bridge circuit and a magnetic Hall sensor for sensing and controlling the real time speed of the motor. To be applied.

Further, the motor (Em) is configured to have a maximum value of the voltage so that the counter electromotive force is electrically constant at a period equal to or longer than the 120-degree period in the 1/2 cycle, and Im (current maximum value) is constantly applied to the flat portion of the counter- / 2 cycles for a period of 120 degrees.

Therefore, a separate gate drive circuit is not required, and the gating is blocked while applying a fault signal such as overcurrent, overheat, short circuit, or control voltage, thereby protecting the device safely and quickly processing the fault.

The present invention is not limited to the configurations shown in Figs. 1 to 3, and its configuration can be modified into various forms. In the case of the EC motor shown in Figs. 1 to 3, the EC motor is configured to transmit power, and in the case of the EC motor, the EC motor is used in the air conditioner in combination with the fan.

The configurations shown in Figs. 1 to 3 are not limited to those used for power transmission, and may be installed in an air conditioner. Further, the EC motor is not limited to being used for an air conditioner, and may be used for power transmission.

When the air conditioner is installed in an air conditioner for providing heating, cooling and air to one side of the shaft 20, a fan can be coupled to one side of the EC motor. The fan may include a general configuration and may be separately provided in accordance with the configuration of the air conditioner.

In addition, the EC motor and the fan are detachably installed to replace the EC motor and the fan when the fan is damaged.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

10: Housing 11: Fixing projection
12: first housing coupling projection 20: shaft
21: Bearing 22: Keyway
30: inner rotor 31: shaft coupling hole
32: key engagement groove 33: magnet mounting projection
34: position home position piece 36: ferrite magnet
40: stator assembly 41:
42: coil 50: connecting housing
51: seat groove 52: engaging projection
53: bushing 54:
55: second housing coupling projection 60: PCB board
61: main board 62: high density bus
63: Power board 70: Cover

Claims (11)

In a driver-integrated EC motor,
A housing (10);
A shaft (20) rotatably installed inside the housing (10) by a bearing;
An inner rotor (30) key-engaged with the shaft (20) and drawn into the inside of the housing (10) to install a ferrite magnet (36);
A stator assembly 40 disposed inside the housing 10 and positioned at an outer periphery of the inner rotor 30 to generate a rotating magnetic field to rotate the shaft 20 and the inner rotor 30;
A connection housing 50 is provided for preventing overcurrent, overheating, short-circuiting, and shortage of control voltage while not constituting a gate drive circuit and blocking a gating signal at the same time, A main board 61 which is provided in a mounting groove formed in one side of the EC motor and outputs power signals U, V and W of the three-phase EC motor to the EC motor in accordance with a driving signal, A high density bus 62 having a function of removing noise reflected from the outside and a noise included in the inputted pulse width modulation signal, a high density bus 62 having a VLSI microchip mounted thereon, A power board 63 for stably driving the EC motor is provided at one side of the connection housing 50 to control the power signal of the motor, The motor (Em) is configured to have a maximum value of the voltage. The motor (Em) is configured to have a constant voltage over a period of 120 [deg.] Period in an electrically 1/2 cycle of the power, pulse width modulation, A PCB board (60) which constantly controls Im (current maximum value) to flow electrically for 1/2 period to 120 degree period; And
A cover 70 coupled to one side of the connection housing 50 and protecting the PCB board 60 including the main board 61;
Wherein the EC motor is a motor-driven EC motor. The method according to claim 1,
The inner rotor (30)
A shaft coupling hole (31) is formed in the inner center so as to be able to engage with the shaft from one side to the other,
The shaft engaging hole 31 is formed with a key engaging groove 32 for engaging with a shaft when engaged with the shaft,
A plurality of magnet mounting projections 33 are formed on the outer periphery of the ferrite magnets 36 to facilitate the installation of the ferrite magnets 36,
A position groove 34 is formed between the magnet mounting projections 33 and the magnet mounting projections 33,
And a position piece (35) is formed in the position groove (34). The method according to claim 1,
The ferrite magnet (36)
And the EC motor is inclined toward both sides of the center. 4. The method according to any one of claims 1 to 3,
The inner rotor 30 and the ferrite magnets 36
An angle formed obliquely to both sides of the center of the ferrite magnet 36
Is formed at an angle and an angle of a surface inclined from the position groove (34) toward the magnet mounting projection (33). The method according to claim 1,
The stator assembly (40)
A stator 41 made of an iron core;
The stator (41) has a stator coil (42) which is constantly wound to generate a rotating magnetic field by applying electricity.
Wherein the EC motor is a motor-driven EC motor. delete delete The method according to claim 1,
In the power board 63,
A switched mode power supply (SMPS) for supplying necessary power to the PCB board 30;
A switching power conversion module for supplying main power to the motor;
Wherein the EC motor is a motor-driven EC motor. The method according to claim 1,
In the power board 63,
In addition to the SPM power conversion module, a built-in drive gate circuit facilitates gate signal processing required by the inverter,
A driver for a full bridge circuit, and a magnetic Hall sensor for sensing and controlling the real time speed of the motor. The method according to claim 1,
In the PCB board 60,
A switch for a full bridge circuit processing a gate signal;
A magnetic hall sensor for sensing and controlling the real time speed of the motor;
Further comprising: a driver-integrated EC motor. The method according to claim 1,
In the PCB board 60,
A guide member spaced a predetermined distance from the inside of the connection housing 50 to guide heat interruption generated inside the housing 10 and installation of the PCB board 60;
Further comprising: a driver-integrated EC motor.

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