WO2015129042A1 - 永久磁石式回転電動機の制御装置 - Google Patents
永久磁石式回転電動機の制御装置 Download PDFInfo
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- WO2015129042A1 WO2015129042A1 PCT/JP2014/055145 JP2014055145W WO2015129042A1 WO 2015129042 A1 WO2015129042 A1 WO 2015129042A1 JP 2014055145 W JP2014055145 W JP 2014055145W WO 2015129042 A1 WO2015129042 A1 WO 2015129042A1
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- permanent magnet
- axis current
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- rotor position
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/10—Arrangements for controlling torque ripple, e.g. providing reduced torque ripple
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
- H02P21/141—Flux estimation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/22—Current control, e.g. using a current control loop
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/24—Vector control not involving the use of rotor position or rotor speed sensors
- H02P21/26—Rotor flux based control
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
- H02P27/085—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation wherein the PWM mode is adapted on the running conditions of the motor, e.g. the switching frequency
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/032—Preventing damage to the motor, e.g. setting individual current limits for different drive conditions
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2205/00—Indexing scheme relating to controlling arrangements characterised by the control loops
- H02P2205/05—Torque loop, i.e. comparison of the motor torque with a torque reference
Definitions
- the present invention relates to a control device for a permanent magnet type rotary electric motor.
- a permanent magnet type rotary motor is driven and controlled by an inverter.
- a method for driving and controlling a permanent magnet type rotary electric motor for example, a U phase current, a V phase current, and a W phase current (phase currents Iu, Iv, Iw) which are input currents to the permanent magnet type rotary electric motor are The angle is converted into a d-axis current having the same phase as the magnetic flux axis of the field and a q-axis current orthogonal to the magnetic flux axis of the field.
- Patent Document 1 When operating a permanent magnet rotary motor at a constant speed and a constant torque, the phase currents Iu, Iv, and Iw of each phase are set according to the dq axis current command by making the q axis current command value constant. The system is transformed into a three-phase alternating current coordinate system and becomes a sine wave. In terms of suppressing torque pulsation, the phase currents Iu, Iv, and Iw of each phase are preferably sine waves.
- a reverse magnetic field is applied to the circumferential end (permanent magnet end) of the permanent magnet. As a result, a rotor position that is easy to act on is recognized, and demagnetization occurs.
- the present invention has been made in view of the above, and an object thereof is to obtain a control device for a permanent magnet type rotary electric motor capable of improving the demagnetization resistance of the permanent magnet while suppressing torque pulsation.
- the present invention converts a phase current supplied to a permanent magnet type rotary electric motor into a d-axis current and a q-axis current on a dq coordinate axis, Based on the d-axis current and the q-axis current, the magnitude of the reverse magnetic field acting on the circumferential end of the permanent magnet provided in the rotor of the permanent magnet type rotary electric motor is equal to or less than the coercive force of the permanent magnet. In this manner, a current command for changing at least one of the d-axis current and the q-axis current according to the rotor position of the rotor is calculated.
- the demagnetization resistance of the permanent magnet can be improved while suppressing the torque pulsation.
- FIG. 1 is a block diagram showing a configuration example of a control device for a permanent magnet type rotary electric motor according to Embodiments 1 to 3 of the present invention.
- FIG. 2 is a sectional view of the permanent magnet type rotary electric motor according to Embodiments 1 to 3 of the present invention.
- FIG. 3 is an enlarged cross-sectional view of the permanent magnet shown in FIG.
- FIG. 4 is a diagram showing a current waveform controlled by the control device for the permanent magnet type rotary electric motor according to Embodiment 1 of the present invention.
- FIG. 5 is a diagram showing a reverse magnetic field acting on the permanent magnet end portion of the permanent magnet type rotary electric motor according to Embodiment 1 of the present invention.
- FIG. 1 is a block diagram showing a configuration example of a control device for a permanent magnet type rotary electric motor according to Embodiments 1 to 3 of the present invention.
- FIG. 2 is a sectional view of the permanent magnet type rotary electric motor according to Embodiments 1 to
- FIG. 6 is a diagram showing a current waveform controlled by the prior art.
- FIG. 7 is a diagram showing a reverse magnetic field acting on the end of the permanent magnet driven by the current shown in FIG.
- FIG. 8 is a diagram showing a current waveform controlled by the control device for the permanent magnet type rotary electric motor according to the second embodiment of the present invention.
- FIG. 9 is a diagram showing a reverse magnetic field acting on the permanent magnet end portion of the permanent magnet type rotary electric motor according to Embodiment 2 of the present invention.
- FIG. 10 is a diagram showing a current waveform controlled by the control device for the permanent magnet type rotary electric motor according to the third embodiment of the present invention.
- FIG. 11 is a diagram showing a reverse magnetic field acting on the permanent magnet end portion of the permanent magnet type rotary electric motor according to Embodiment 3 of the present invention.
- FIG. 1 is a block diagram showing a configuration example of a control device 10 for a permanent magnet type rotary electric motor 11 according to Embodiments 1 to 3 of the present invention.
- FIG. 2 is a cross-sectional view of the permanent magnet type rotary electric motor 11 according to Embodiments 1 to 3 of the present invention.
- FIG. 3 is an enlarged cross-sectional view of the permanent magnet 5 shown in FIG.
- FIG. 4 is a diagram showing a current waveform controlled by the control device 10 of the permanent magnet type rotary electric motor 11 according to Embodiment 1 of the present invention.
- FIG. 1 is a block diagram showing a configuration example of a control device 10 for a permanent magnet type rotary electric motor 11 according to Embodiments 1 to 3 of the present invention.
- FIG. 2 is a cross-sectional view of the permanent magnet type rotary electric motor 11 according to Embodiments 1 to 3 of the present invention.
- FIG. 3 is an enlarged cross-sectional view of the permanent magnet 5 shown in FIG.
- FIG. 5 is a diagram showing a reverse magnetic field that acts on the permanent magnet end portion 5b of the permanent magnet type rotary electric motor 11 according to Embodiment 1 of the present invention.
- the permanent magnet type rotary electric motor 11 according to the present embodiment is simply referred to as “electric motor 11”.
- the control device 10 shown in FIG. 1 includes a three-phase / dq converter 13, a PWM controller 14, and a current command calculator 15 as main components.
- the torque command T includes the torque of the motor 11.
- the power converter 12 is controlled so as to match.
- An electric motor 11 that is an AC rotating machine is connected to a power converter 12, and the power converter 12 is controlled by the control device 10 to convert DC power into AC power of an arbitrary frequency and supply the AC power to the motor 11.
- Current detectors 17a, 17b, and 17c such as a CT (current transformer) are disposed on the three connections connecting the power converter 12 and the electric motor 11.
- the current detectors 17a, 17b, and 17c detect the phase currents Iu, Iv, and Iw of each phase generated in the electric motor 11, and the detected phase currents Iu, Iv, and Iw are three-phase / dq converters. 13 is given.
- the three-phase / dq converter 13 converts the phase currents Iu, Iv, Iw obtained from the current detectors 17a, 17b, 17c into a d-axis current Id and a q-axis current Iq on the dq coordinate axis. And output to the current command calculation unit 15.
- a torque command T output from an external control device is input to the current command calculation unit 15, and the current command calculation unit 15 uses the d-axis current Id and the q-axis current Iq to rotate the rotor angle of the electric motor 11. (Rotor position) is detected.
- the current command calculation unit 15 calculates a q-axis current command Iq * and a d-axis current command Id * based on the rotor position, torque command T, d-axis current Id, and q-axis current Iq.
- PWM control unit 14 calculates three-phase voltage commands Vu, Vv, and Vw that are gate drive signals based on q-axis current command Iq * and d-axis current command Id *, and outputs them to power converter 12.
- An electric motor 11 shown in FIG. 2 is composed of a stator core 1 and a rotor 6.
- the stator 3 includes a stator core 1 formed in an annular shape and a stator winding 2 to which external power is supplied.
- a plurality of teeth 1a arranged at equal intervals in the circumferential direction are formed on the inner peripheral side of the stator core 1, and slots 9 are formed between adjacent teeth 1a.
- the rotor 6 is disposed via a gap 8 on the inner diameter side of the stator core 1, and a rotor shaft 7 is provided at the center of the rotor 6.
- permanent magnets 5 On the outer diameter side surface of the rotor core 4, permanent magnets 5 having different polarities are alternately arranged in the circumferential direction.
- the motor 11 has 8 poles and 12 slots as an example, but the number of magnetic poles and the number of slots 9 may be other combinations.
- FIG. 3 is an enlarged view of the permanent magnet 5 shown in FIG.
- the permanent magnet 5 is formed in a trapezoidal cross section or a D cross section. Due to such geometric factors, the permanent magnet 5 is more easily demagnetized by a reverse magnetic field at the circumferential end (permanent magnet end 5b) than at the circumferential central portion 5a.
- the current command calculation unit 15 of the control device 10 is such that the magnitude of the reverse magnetic field acting on the permanent magnet end 5b is that of the permanent magnet 5.
- the value of the q-axis current command Iq * is changed according to the rotor position so as to be equal to or less than the coercive force.
- FIG. 4A shows the relationship between the electrical angle representing the rotational position of the rotor 6 and the dq-axis current command value (the values of the d-axis current command Id * and the q-axis current command Iq *). .
- the value of the q-axis current command Iq * changes according to the rotor position, but the value of the d-axis current command Id * is zero.
- FIG. 4B shows phase currents Iu, Iv, and Iw of each phase converted from the dq-axis coordinate system to the three-phase AC coordinate system in accordance with the dq-axis current command value of FIG.
- the value of the q-axis current command Iq * is suppressed at the rotor position where the large reverse magnetic field acts on the permanent magnet end 5b (the peak indicated by the symbol A in FIG. 5). Then, at the rotor position where the large reverse magnetic field does not act on the permanent magnet end portion 5b (the valley portion indicated by symbol B in FIG. 5), the value of the q-axis current command Iq * becomes high, for example, the maximum value.
- FIG. 6 is a diagram showing a current waveform controlled by the prior art.
- FIG. 7 is a diagram showing a reverse magnetic field acting on the permanent magnet end portion 5b driven by the current shown in FIG.
- the q-axis current command Iq regardless of the rotor position.
- the value of * is controlled to be constant.
- FIG. 6B shows the phase currents Iu, Iv, Iw of each phase converted from the dq axis coordinate system to the three-phase AC coordinate system in accordance with the dq axis current command value of FIG. 6A.
- phase currents Iu, Iv, and Iw of each phase become sinusoidal.
- the phase currents Iu, Iv, and Iw of each phase are preferably sine waves.
- a strong reverse magnetic field acts on the permanent magnet end portion 5b and demagnetization occurs.
- the control device 10 is configured so that the magnitude of the reverse magnetic field acting on the permanent magnet end 5b is equal to or less than the coercive force of the permanent magnet 5.
- the q-axis current command Iq * is changed according to the above. This avoids demagnetization of the permanent magnet end 5b.
- the value of the q-axis current command Iq * is suppressed only at a specific rotor position, torque reduction can be minimized.
- the electric motor 11 may be provided with position detection means such as a rotation angle sensor, and the rotor position may be detected based on the position signal output from the position detection means.
- the current detection units 17a, 17b, and 17c are used as means for detecting the phase currents Iu, Iv, and Iw of each phase.
- the phase currents Iu of each phase are used by using other known methods. , Iv, Iw may be detected.
- the W phase current Iw can also be obtained from the U phase and V phase detection currents. Accordingly, any one of the three current detection units 17a, 17b, and 17c may be omitted.
- the control device 10 has a permanent magnet at the rotor position (position A) where a reverse magnetic field larger than the coercive force of the permanent magnet 5 acts on the permanent magnet end 5b.
- the q-axis current Iq smaller than the q-axis current Iq flowing at the rotor position (position B) where a reverse magnetic field smaller than the coercive force of the permanent magnet 5 acts on the end 5b is q
- the q-axis current command Iq * of the axis current Iq is calculated.
- FIG. FIG. 8 is a diagram showing a current waveform controlled by the control device 10 of the permanent magnet type rotary electric motor 11 according to Embodiment 2 of the present invention.
- FIG. 9 is a diagram showing a reverse magnetic field acting on the permanent magnet end portion 5b of the permanent magnet type rotary electric motor 11 according to Embodiment 2 of the present invention.
- the control device 10 When the control device 10 according to the present embodiment operates the electric motor 11 at a constant speed and a constant torque, the control device 10 has a rotor position at which a reverse magnetic field larger than the coercive force acts on the permanent magnet end portion 5b.
- a d-axis current Id larger than the d-axis current Id flowing at the rotor position (position B) where a reverse magnetic field smaller than the coercive force acts on the permanent magnet end 5b.
- a d-axis current command Id * of the d-axis current Id is calculated so as to flow therethrough.
- FIG. 8A shows the relationship between the electrical angle representing the rotational position of the rotor 6 and the dq-axis current command value.
- the value of the q-axis current command Iq * is suppressed at the rotor position where the large reverse magnetic field acts on the permanent magnet end portion 5b (the peak portion indicated by the symbol A in FIG. 9). It becomes high, for example, the maximum value, at the rotor position where the large reverse magnetic field does not act on the magnet end 5b (the valley indicated by the symbol B in FIG. 9).
- the value of the d-axis current command Id * is high at a rotor position where a large reverse magnetic field acts on the permanent magnet end 5b, and is suppressed at a rotor position where a large reverse magnetic field does not act on the permanent magnet end 5b.
- the demagnetization resistance can be improved by energizing the strong field d-axis current in this way.
- FIG. 8B shows the phase currents Iu, Iv, and Iw of each phase converted from the dq axis coordinate system to the three-phase AC coordinate system according to the dq axis current command value of FIG. 8A.
- the control device 10 reduces the value of the q-axis current command Iq * and reduces the value of the d-axis current command Id * at the rotor position where a large reverse magnetic field acts on the permanent magnet end portion 5b.
- the value of the q-axis current command Iq * is increased and the value of the d-axis current command Id * is decreased.
- FIG. 10 is a diagram showing a current waveform controlled by the control device 10 of the permanent magnet type rotary electric motor 11 according to Embodiment 3 of the present invention.
- FIG. 11 is a diagram showing a reverse magnetic field that acts on the permanent magnet end portion 5b of the permanent magnet type rotary electric motor 11 according to Embodiment 3 of the present invention.
- the control device 10 calculates the q-axis current command Iq * of the q-axis current Iq so as to make the value of the q-axis current Iq constant regardless of the rotor position, and at the end of the permanent magnet At the rotor position where the reverse magnetic field larger than the coercive force acts on 5b (the position indicated by symbol A), the rotor position where the reverse magnetic field smaller than the coercive force acts on the permanent magnet end portion 5b (position indicated by the reference symbol B).
- the d-axis current command Id * of the d-axis current Id is calculated so that the d-axis current Id larger than the value of the d-axis current Id flowing in is passed.
- the same parts as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
- FIG. 10A shows the relationship between the electrical angle representing the rotational position of the rotor 6 and the dq-axis current command value.
- the value of the q-axis current command Iq * is a constant level regardless of the rotor position.
- the value of the d-axis current command Id * is high at a rotor position where a large reverse magnetic field acts on the permanent magnet end 5b, and is suppressed at a rotor position where a large reverse magnetic field does not act on the permanent magnet end 5b. .
- FIG. 10B shows the phase currents Iu, Iv, and Iw of each phase converted from the dq axis coordinate system to the three-phase AC coordinate system in accordance with the dq axis current command value of FIG. 10A.
- the control device 10 fixes the value of the q-axis current command Iq * to a constant level regardless of the rotor position of the rotor 6, and a large reverse magnetic field acts on the permanent magnet end portion 5b.
- the value of the d-axis current command Id * is increased, and at the rotor position where a large reverse magnetic field does not act on the permanent magnet end 5b, the value of the d-axis current command Id * is decreased. Yes.
- the strong field d-axis current Id flows at the rotor position where a large reverse magnetic field acts on the permanent magnet end portion 5b, the demagnetization resistance can be improved.
- the control device 10 converts the phase current supplied to the electric motor 11 into the d-axis current Id and the q-axis current Iq on the dq coordinate axis, and the torque command T, Based on the d-axis current Id and the q-axis current Iq, the d-axis depends on the rotor position so that the magnitude of the reverse magnetic field acting on the permanent magnet end 5b is less than or equal to the coercive force of the permanent magnet 5.
- a current command (d-axis current command Id *, q-axis current command Iq *) for changing at least one value of the current Id and the q-axis current Iq is calculated.
- control device 10 is configured to superimpose a six-fold component of the power supply frequency on the q-axis current Iq at the rotor position where a large reverse magnetic field does not act on the permanent magnet end portion 5b. May be.
- control device 10 is configured to superimpose a 6-fold component of the power supply frequency on the d-axis current Id at the rotor position where a large reverse magnetic field acts on the permanent magnet end 5b. May be. With this configuration, demagnetization can be avoided efficiently.
- Embodiments 1 to 3 show an example of the contents of the present invention, and can be combined with other known techniques, and a part thereof is not deviated from the gist of the present invention. Of course, it is possible to change the configuration such as omission.
- the present invention can be applied to a control device for a permanent magnet type rotary electric motor, and is particularly useful as an invention that can improve the demagnetization resistance of a permanent magnet while suppressing torque pulsation.
- stator iron core 1 stator iron core, 1a teeth, 2 stator windings, 3 stators, 4 rotor iron cores, 5 permanent magnets, 5a circumferential center, 5b permanent magnet ends, 6 rotors, 7 rotor shafts, 8 gaps , 9 slots, 10 control device, 11 permanent magnet type rotary motor, 12 power converter, 13 three-phase / dq conversion unit, 14 PWM control unit, 15 current command calculation unit, 17a, 17b, 17c current detection unit.
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Abstract
Description
図1は、本発明の実施の形態1から3に係る永久磁石式回転電動機11の制御装置10の構成例を示すブロック図である。図2は、本発明の実施の形態1から3に係る永久磁石式回転電動機11の断面図である。図3は、図2に示される永久磁石5の断面拡大図である。図4は、本発明の実施の形態1に係る永久磁石式回転電動機11の制御装置10で制御される電流波形を示す図である。図5は、本発明の実施の形態1に係る永久磁石式回転電動機11の永久磁石端部5bに作用する逆磁界を示す図である。以下の説明では、特に言及しない限り、本実施の形態に係る永久磁石式回転電動機11を単に「電動機11」と称する。
図8は、本発明の実施の形態2に係る永久磁石式回転電動機11の制御装置10で制御される電流波形を示す図である。図9は、本発明の実施の形態2に係る永久磁石式回転電動機11の永久磁石端部5bに作用する逆磁界を示す図である。
図10は、本発明の実施の形態3に係る永久磁石式回転電動機11の制御装置10で制御される電流波形を示す図である。図11は、本発明の実施の形態3に係る永久磁石式回転電動機11の永久磁石端部5bに作用する逆磁界を示す図である。
Claims (6)
- 永久磁石式回転電動機へ供給される相電流をdq座標軸上でのd軸電流およびq軸電流に変換し、トルク指令、前記d軸電流、および前記q軸電流に基づいて、永久磁石式回転電動機の回転子に設けられた永久磁石の周方向端部に作用する逆磁界の大きさが、前記永久磁石の保磁力以下となるように、前記回転子の回転子位置に応じて、前記d軸電流および前記q軸電流の少なくとも一方の値を変化させる電流指令を演算することを特徴とする永久磁石式回転電動機の制御装置。
- 前記永久磁石の周方向端部に前記保磁力よりも大きな逆磁界が作用する前記回転子位置では、この周方向端部に前記保磁力よりも小さな逆磁界が作用する前記回転子位置で流れるq軸電流の値よりも小さいq軸電流を通流させるように、q軸電流の前記電流指令を演算することを特徴とする請求項1に記載の永久磁石式回転電動機の制御装置。
- 前記永久磁石の周方向端部に前記保磁力よりも大きな逆磁界が作用する前記回転子位置では、この周方向端部に前記保磁力よりも小さな逆磁界が作用する前記回転子位置で流れるd軸電流の値よりも大きいd軸電流を通流させるように、d軸電流の前記電流指令を演算することを特徴とする請求項2に記載の永久磁石式回転電動機の制御装置。
- 前記回転子位置に関係なくq軸電流の値を一定にさせるように、q軸電流の前記電流指令を演算すると共に、
前記永久磁石の周方向端部に前記保磁力よりも大きな逆磁界が作用する前記回転子位置では、この周方向端部に前記保磁力よりも小さな逆磁界が作用する前記回転子位置で流れるd軸電流の値よりも大きいd軸電流を通流させるように、d軸電流の前記電流指令を演算することを特徴とする請求項1に記載の永久磁石式回転電動機の制御装置。 - 前記永久磁石の周方向端部に前記保磁力よりも小さな逆磁界が作用する前記回転子位置では、前記q軸電流に電源周波数の6倍成分を重畳させることを特徴とする請求項1から4の何れか1項に記載の永久磁石式回転電動機の制御装置。
- 前記永久磁石の周方向端部に前記保磁力よりも大きな逆磁界が作用する前記回転子位置では、前記d軸電流に電源周波数の6倍成分を重畳させることを特徴とする請求項1から4の何れか1項に記載の永久磁石式回転電動機の制御装置。
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US15/121,181 US20170019041A1 (en) | 2014-02-28 | 2014-02-28 | Control device for permanent-magnet rotary motor |
KR1020167022294A KR101699216B1 (ko) | 2014-02-28 | 2014-02-28 | 영구 자석식 회전 전동기의 제어 장치 |
JP2014543038A JP5752330B1 (ja) | 2014-02-28 | 2014-02-28 | 永久磁石式回転電動機の制御装置 |
DE112014006272.3T DE112014006272T5 (de) | 2014-02-28 | 2014-02-28 | Steuerungsvorrichtung für einen Permanentmagnet-Drehmotor |
PCT/JP2014/055145 WO2015129042A1 (ja) | 2014-02-28 | 2014-02-28 | 永久磁石式回転電動機の制御装置 |
CN201480076387.7A CN106031023B (zh) | 2014-02-28 | 2014-02-28 | 永磁铁式旋转电动机的控制装置 |
TW103132419A TWI538385B (zh) | 2014-02-28 | 2014-09-19 | 永久磁鐵式旋轉電動機的控制裝置 |
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KR (1) | KR101699216B1 (ja) |
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WO2019073599A1 (ja) * | 2017-10-13 | 2019-04-18 | 日立ジョンソンコントロールズ空調株式会社 | モータ駆動装置、及びこれを備える冷凍サイクル装置、並びにモータ駆動方法 |
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KR101912694B1 (ko) * | 2017-03-28 | 2018-10-29 | 엘지전자 주식회사 | 모터 제어 모듈, 모터 제어 장치, 모터 제어 시스템 및 모터 제어 방법 |
JP6877544B2 (ja) * | 2017-07-04 | 2021-05-26 | 三菱電機株式会社 | 回転電機および直動電動機 |
CN112332729B (zh) * | 2019-07-30 | 2023-12-26 | 丹佛斯(天津)有限公司 | 压缩机及其控制方法 |
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JP2013233055A (ja) * | 2012-05-01 | 2013-11-14 | Honda Motor Co Ltd | 電動機の制御装置 |
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CN101641854B (zh) * | 2007-03-27 | 2012-10-10 | 日立金属株式会社 | 永磁体式旋转机及其制造方法 |
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JP2006081247A (ja) * | 2004-09-07 | 2006-03-23 | Honda Motor Co Ltd | Dcブラシレスモータの制御装置 |
JP2013233055A (ja) * | 2012-05-01 | 2013-11-14 | Honda Motor Co Ltd | 電動機の制御装置 |
JP2014023338A (ja) * | 2012-07-20 | 2014-02-03 | Aida Engineering Ltd | 永久磁石モータとその駆動方法、並びに、永久磁石モータの制御装置 |
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JP5752330B1 (ja) | 2015-07-22 |
TWI538385B (zh) | 2016-06-11 |
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