WO2022195772A1 - モータ駆動装置 - Google Patents
モータ駆動装置 Download PDFInfo
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- WO2022195772A1 WO2022195772A1 PCT/JP2021/010857 JP2021010857W WO2022195772A1 WO 2022195772 A1 WO2022195772 A1 WO 2022195772A1 JP 2021010857 W JP2021010857 W JP 2021010857W WO 2022195772 A1 WO2022195772 A1 WO 2022195772A1
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- Prior art keywords
- motor
- connection state
- magnetic flux
- connection
- rotor magnetic
- Prior art date
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- 230000004907 flux Effects 0.000 claims abstract description 82
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 17
- 230000002159 abnormal effect Effects 0.000 claims description 13
- 230000005856 abnormality Effects 0.000 abstract description 8
- 239000000725 suspension Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000003044 adaptive effect Effects 0.000 description 4
- 230000001934 delay Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000005347 demagnetization Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
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Classifications
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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
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
- H02P25/184—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays wherein the motor speed is changed by switching from a delta to a star, e.g. wye, connection of its windings, or vice versa
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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
- H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
- H02P21/18—Estimation of position or speed
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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
Definitions
- the present disclosure relates to a motor drive device that drives a motor.
- a motor that can switch the connection state of windings is known as a motor mounted on equipment such as an air conditioner.
- the motor driving device operates the motor by switching the connection state according to the operating state of the device.
- the motor driving device stops the motor and checks the connection state when switching the connection state and when confirming an abnormality in the switching of the connection state.
- Patent Literature 1 discloses a motor drive system that determines an abnormality in the connection state by detecting an abnormality in which the actual connection state of the motor and the connection state recognized by the motor drive system are different.
- the present disclosure has been made in view of the above, and an object thereof is to obtain a motor drive device that enables confirmation of the connection state during operation of the motor.
- a motor drive device includes an inverter section that supplies alternating current to a motor having a plurality of stator windings, and a switch between the inverter section and the motor.
- a connection switching unit arranged to switch the connection state of the stator windings, and a rotor for calculating an estimated rotor magnetic flux, which is an estimated value of the rotor magnetic flux of the motor, based on current information, which is the result of detecting the current value of the alternating current.
- a child magnetic flux estimator and a determination processor that determines a connection state based on the estimated rotor magnetic flux.
- the motor drive device has the effect that the connection state can be checked while the motor is operating.
- FIG. 1 shows a configuration of a motor drive device according to a first embodiment
- FIG. FIG. 2 is a diagram showing the configuration of a connection switching unit of the motor drive device according to the first embodiment
- FIG. 2 is a diagram showing a configuration example of hardware that implements a control unit of the motor drive device according to the first embodiment
- 4 is a flow chart showing the operation procedure of the motor drive device according to the first embodiment
- FIG. 1 is a diagram showing the configuration of a motor drive device 100 according to the first embodiment.
- Motor drive device 100 drives motor 40, which is a three-phase motor.
- Motor 40 has a plurality of stator windings.
- the motor drive device 100 has an inverter section 10 , a current detection section 20 , a connection switching section 30 and a control section 50 .
- the inverter section 10 is connected to the DC voltage source 1 .
- the inverter unit 10 converts the DC voltage from the DC voltage source 1 into AC voltage and supplies AC current to the motor 40 .
- the DC voltage source 1 only needs to be capable of outputting a DC voltage, and may have a configuration in which a converter is connected to an AC voltage source.
- the current detection section 20 detects the current value of the alternating current supplied to the motor 40 by the inverter section 10 .
- the connection switching unit 30 is arranged between the inverter unit 10 and the motor 40 .
- the connection switching unit 30 switches the connection state of the stator windings in the motor 40 .
- the control unit 50 performs signal processing for controlling the motor 40 .
- Each component of the motor drive device 100 shown in FIG. 1 can be mounted on one substrate.
- Each component of the motor drive device 100 may be distributed and mounted on a plurality of substrates.
- FIG. 2 is a diagram showing the configuration of the connection switching unit 30 of the motor drive device 100 according to the first embodiment.
- the connection switching unit 30 has three relays 31 , 32 , 33 .
- the connection switching unit 30 simultaneously switches the relays 31 , 32 , 33 according to the connection switching signal acquired from the control unit 50 .
- the motor 40 is configured so that the connection state of the stator winding can be switched between star connection and delta connection.
- the star connection will be referred to as "Y connection” and the delta connection will be referred to as " ⁇ connection”.
- the connection switching unit 30 switches the connection state from Y connection to ⁇ connection or from ⁇ connection to Y connection by simultaneously switching the relays 31 , 32 , and 33 .
- the connection state when the common contact of each relay 31, 32, 33 is connected to the "b contact” is Y connection.
- the connection state when the common contact of each relay 31, 32, 33 is connected to the "a contact” is delta connection.
- a relationship of ⁇ 3:1 is established between the rotor magnetic flux when the connection state is Y connection and the rotating magnetic flux when the connection state is ⁇ connection.
- the motor 40 is not limited to one that can switch the connection state between the Y connection and the ⁇ connection.
- the motor 40 may be capable of switching between three or more types of connection states. Each connection state that the motor 40 can take should be one in which the rotor magnetic flux can be changed by switching the connection state.
- the inverter section 10 shown in FIG. 1 has a plurality of switching elements.
- the inverter unit 10 converts a DC voltage into a three-phase AC current by turning on and off each switching element according to a PWM (Pulse Width Modulation) signal obtained from the control unit 50 . Illustration of switching elements is omitted.
- the current detection unit 20 detects current values of two-phase AC currents among the three-phase AC currents flowing from the inverter unit 10 to the motor 40 .
- the current detection unit 20 outputs current information, which is the result of detection of the current value of alternating current.
- Current detection by the current detection unit 20 is not limited to detection of two-phase alternating current.
- the current detection unit 20 may detect each of the three-phase alternating currents, or may detect a direct current obtained by synthesizing the three-phase alternating currents.
- the control unit 50 has a rotor magnetic flux estimation unit 51 , a connection switching control unit 52 , a determination value storage unit 53 , a determination processing unit 54 and a drive signal control unit 55 .
- the rotor magnetic flux estimator 51 acquires current information from the current detector 20 and calculates an estimated rotor magnetic flux based on the current information.
- Rotor flux is the flux through the rotor of motor 40 .
- the estimated rotor flux is an estimate of the rotor flux.
- connection switching control unit 52 generates a connection switching signal for controlling switching of the connection state, and sends the generated connection switching signal to the connection switching unit 30 .
- the determination value storage unit 53 stores thresholds that are values used to determine the connection state.
- the determination processing unit 54 acquires the estimated rotor magnetic flux from the rotor magnetic flux estimation unit 51 and determines the connection state based on the estimated rotor magnetic flux.
- a connection switching signal is also input to the determination processing unit 54 .
- the determination processing unit 54 reads the threshold value from the determination value storage unit 53 and determines the connection state using the threshold value and the connection switching signal.
- the determination processing unit 54 determines the connection state by comparing the estimated rotor magnetic flux with a threshold value. Further, the determination processing unit 54 identifies the connection state indicated by the connection switching signal.
- the determination processing unit 54 determines whether the connection state is abnormal by comparing the determination result of the connection state with the connection state indicated by the connection switching signal.
- An abnormal connection state means that the actual connection state of the motor 40 is different from the connection state recognized by the motor drive device 100 for controlling the motor 40 .
- the drive signal control unit 55 acquires the connection state determination result from the determination processing unit 54 .
- the drive signal control unit 55 generates a PWM signal based on the determination result of the connection state.
- the threshold value is a value between the value of the rotor magnetic flux when the connection state is the Y connection and the value of the rotor magnetic flux when the connection state is the ⁇ connection.
- the threshold is determined in advance based on the specifications of the motor 40 .
- the determined threshold value is stored in the judgment value storage unit 53 .
- the motor drive device 100 allows suspension of the motor 40 when the connection state is determined to be abnormal.
- the judgment processing unit 54 judges whether or not the postponement of suspension is possible.
- the determination processing unit 54 determines that the suspension should be postponed if the number of suspension postponements has not reached the preset number of times.
- the determination processing unit 54 counts the suspension period.
- the determination processing unit 54 determines that the suspension should not be postponed when the number of times the suspension has been postponed reaches a preset number of times.
- the drive signal control section 55 stops generating the PWM signal based on the determination by the determination processing section 54 .
- the motor drive device 100 stops the motor 40 when the drive signal control unit 55 stops generating the PWM signal.
- Information indicating the number of times set in advance as a criterion for determining whether or not to allow grace period is referred to as grace number information.
- the grace period information is stored in the judgment value storage unit 53 .
- FIG. 3 is a diagram showing a configuration example of hardware that implements the control unit 50 of the motor drive device 100 according to the first embodiment.
- FIG. 3 shows a rotor magnetic flux estimating unit 51, a connection switching control unit 52, a determination value storage unit 53, a determination processing unit 54, and a drive signal control unit 55, which are main parts of the control unit 50, and a processor 63 and a memory 64. It is a configuration example in the case of being realized by a processing circuit 61 having.
- the processor 63 is a CPU (Central Processing Unit). Processor 63 executes the control program.
- the control program describes processing for operating as the rotor magnetic flux estimation unit 51, the connection switching control unit 52, the determination value storage unit 53, the determination processing unit 54, and the drive signal control unit 55, which are the main parts of the control unit 50. program.
- the memory 64 is, for example, non-volatile or It is volatile memory.
- the memory 64 stores control programs.
- the memory 64 is also used as temporary memory when the processor 63 executes various processes.
- the judgment value storage unit 53 is realized by a nonvolatile memory.
- the input unit 62 is a circuit that receives an input signal to the control unit 50 from the outside.
- the input unit 62 receives current information.
- the output unit 65 is a circuit that outputs the signal generated by the control unit 50 to the outside of the control unit 50 .
- the output unit 65 outputs the PWM signal and the connection switching signal.
- the function of the processing circuit 61 may be realized by a processing circuit that is dedicated hardware.
- the processing circuit, which is dedicated hardware is, for example, ASIC (Application Specific Integrated Circuit), FPGA (Field Programmable Gate Array), or a circuit combining these.
- a part of the essential parts of the control unit 50 may be realized by the processor 63 and the memory 64, and the rest may be realized by dedicated hardware.
- the estimated rotor flux is found in the process of estimating the rotational speed and rotational position of the motor 40 by the adaptive flux observer method.
- the rotor magnetic flux estimator 51 calculates an estimated rotor magnetic flux obtained in the process of estimating the rotational speed and rotational position of the motor 40 .
- the rotor magnetic flux estimator 51 converts the three-phase alternating current values indicated in the current information into current values of the dq axes, which is a rotating coordinate system.
- the adaptive magnetic flux observer method can calculate an estimated magnetic flux vector and an estimated current vector from a state equation based on a voltage vector applied to the motor 40, a current vector output from the motor 40, and an estimated angular velocity. is.
- Ld represents d -axis inductance
- Lq represents q -axis inductance
- R is the motor resistance
- ⁇ is the primary angular frequency
- ⁇ r is the angular velocity
- vds is the d-axis voltage
- vqs is the q-axis voltage
- ids is the d-axis current
- iqs is the q-axis current
- ⁇ ds is the d -axis.
- ⁇ qs is the q-axis stator flux
- ⁇ dr is the d-axis rotor flux.
- h 11 , h 12 , h 21 , h 22 , h 31 and h 32 represent observer gains.
- a constant arbitrarily set according to the motor 40 is used for the observer gain. Also, the symbol " ⁇ " represents an estimated value.
- the rotor flux is only the rotor flux in the d-axis direction, and the rotor flux in the q-axis direction is zero. Therefore, ⁇ qr , which is the q-axis rotor flux, is not described in equations (1) and (2).
- the value of the output voltage command is used for the d-axis voltage vds and the q-axis voltage vqs in equation (1).
- the d-axis current ids and the q-axis current iqs are calculated based on the current information.
- estimated d-axis stator flux ⁇ ds estimated q-axis stator flux ⁇ qs , estimated d-axis current i ds , estimated q-axis current i qs , primary angular frequency ⁇ , and estimated angular velocity ⁇ r .
- the integrated value of the estimated d-axis stator magnetic flux ⁇ ds ⁇ and the integrated value of the estimated q-axis stator magnetic flux ⁇ qs ⁇ are used, respectively.
- the magnetic flux of the motor 40 changes.
- the magnetic flux is in the d-axis direction, that is, the polar direction of the magnet.
- the motor drive device 100 estimates the d-axis rotor magnetic flux and detects switching of the connection state by using the estimation result. From the relationship of formula (1), the estimated d-axis rotor magnetic flux ⁇ dr ⁇ can be calculated by the following formula (3).
- Equation (3) The result of calculation by Equation (3) is the previous value in the control cycle.
- Estimated d-axis rotor magnetic flux ⁇ dr ⁇ is obtained by obtaining (d/dt) ⁇ dr ⁇ considering the control cycle and adding the obtained result to the previous value, which is the integrated value of Equation (3).
- the determination processing unit 54 uses the fact that the rotor magnetic flux changes according to the connection state to determine the connection state from the calculation result of the estimated rotor magnetic flux.
- the determination processing unit 54 uses the connection switching signal acquired from the connection switching control unit 52 and the threshold read from the determination value storage unit 53 to determine the connection state. Based on the connection switching signal, the determination processing unit 54 grasps the currently commanded connection state. The determination processing unit 54 determines whether the connection state is abnormal by comparing the determination result based on the estimated rotor magnetic flux with the currently commanded connection state.
- FIG. 4 is a flow chart showing the operating procedure of the motor drive device 100 according to the first embodiment.
- the motor drive device 100 uses the rotor magnetic flux estimator 51 to calculate an estimated rotor magnetic flux.
- the rotor magnetic flux estimator 51 calculates an estimated rotor magnetic flux in the process of estimating the rotational speed and rotational position of the motor 40 by the adaptive magnetic flux observer method.
- step S2 the motor drive device 100 determines by the determination processing unit 54 which of the Y connection and the ⁇ connection the connection switching signal indicates. That is, the determination processing unit 54 determines whether the current commanded connection state is Y connection or ⁇ connection.
- step S3 the determination processing unit 54 determines whether or not the estimated rotor magnetic flux is greater than the threshold.
- the threshold value is a value between the value of the rotor magnetic flux when the connection state is the Y connection and the value of the rotor magnetic flux when the connection state is the delta connection.
- the determination processing unit 54 determines whether or not the current connection state is Y connection by comparing the estimated rotor magnetic flux with a threshold value.
- the determination processing unit 54 determines that the current connection state is Y connection. In addition, since the currently instructed connection state and the current connection state are both Y-connection, the determination processing unit 54 determines that the connection is normal. In this case, the motor driving device 100 continues driving the motor 40 in step S6.
- step S3 No if it is determined that the estimated rotor magnetic flux is equal to or less than the threshold (step S3, No), the determination processing unit 54 determines that the current connection state is ⁇ connection. Also, the currently commanded connection state is Y connection, whereas the current connection state is ⁇ connection, so the currently commanded connection state and the current connection state do not match. Therefore, the determination processing unit 54 determines that the connection state is abnormal. In this case, the motor driving device 100 advances the procedure to step S5.
- step S4 determines whether or not the estimated rotor magnetic flux is equal to or less than the threshold.
- the determination processing unit 54 determines whether or not the current connection state is delta connection by comparing the estimated rotor magnetic flux with a threshold value.
- the determination processing unit 54 determines that the current connection state is ⁇ connection. In addition, since the currently instructed connection state and the current connection state are both matched by the ⁇ connection, the determination processing unit 54 determines that the connection is normal. In this case, the motor driving device 100 continues driving the motor 40 in step S6.
- step S4 determines that the current connection state is Y connection.
- the current commanded connection state is the ⁇ connection, whereas the current connection state is the Y connection. Therefore, the currently commanded connection state and the current connection state do not match. Therefore, the determination processing unit 54 determines that the connection state is abnormal. In this case, the motor driving device 100 advances the procedure to step S5.
- step S5 the motor drive device 100 determines whether or not the number of times the motor 40 has been postponed to stop has reached a preset number of times. If the determination processing unit 54 determines that the connection state is abnormal in step S3 or step S4, it increases the count value of the delay up to the present.
- the judgment processing unit 54 reads out the grace number information from the judgment value storage unit 53 and compares the grace count value and the grace number information. Based on this comparison, the determination processing unit 54 determines whether or not the number of delays in stopping the motor 40 has reached a preset number.
- step S5 When it is determined that the number of times the motor 40 has been delayed to stop is less than the preset number of times (step S5, No), the motor drive device 100 delays the stop of the motor 40 in response to the determination that the connection state is abnormal. Motor drive device 100 returns the procedure to step S1.
- step S5 if it is determined that the number of times the motor 40 has been delayed to stop has reached the preset number of times (step S5, Yes), the motor drive device 100 confirms the determination that the connection state is abnormal. Thereby, the motor drive device 100 stops the motor 40 in step S7. In both cases of step S6 and step S7, the determination processing unit 54 clears the grace count value. As described above, the motor driving device 100 completes the operation according to the procedure shown in FIG. By setting a grace period for stopping the motor 40 and stopping the motor 40 when the abnormality determination is confirmed, the motor drive device 100 can prevent the motor 40 from being stopped due to an erroneous determination.
- the motor driving device 100 calculates the estimated rotor magnetic flux and determines the connection state of the motor 40 based on the estimated rotor magnetic flux, thereby confirming the connection state during the operation of the motor 40. be able to.
- the motor driving device 100 can check the connection state while the motor 40 is operating, and thus can determine whether the connection state is abnormal during the operation of the motor 40 . Therefore, the motor drive device 100 can prevent the motor 40 from continuing to be driven while the actual connection state and the connection state recognized in the control of the motor 40 are different.
- the motor drive device 100 can prevent the performance of the motor 40 from deteriorating from its original performance by preventing the motor 40 from being driven when the connection state is abnormal.
- the motor drive device 100 can stably drive the motor 40 .
- the motor drive device 100 can detect an abnormality in the connection state at an early stage by determining the abnormality during the operation of the motor 40 .
- Motor drive device 100 can obtain high reliability by enabling normal wiring to be maintained.
- the motor drive device 100 can protect the motor 40 by stopping the motor 40 when there is an abnormality in the connection state. This makes it possible to extend the life of the motor 40 and improve the reliability of the motor 40 .
- the motor drive device 100 uses the process of estimating the rotational speed and rotational position of the motor 40 by the adaptive magnetic flux observer method to calculate the estimated rotor magnetic flux.
- the motor drive device 100 can confirm the connection state by a simple process. Therefore, the motor drive device 100 can reduce the processing load while the motor 40 is operating. In addition, the motor driving device 100 can reduce the situation where the processing cannot catch up with the control period. As a result, the motor drive device 100 can stably control the motor 40 and achieve high reliability.
- the motor drive device 100 uses the rotor magnetic flux to determine the connection state.
- the motor driving device 100 can determine the connection state by simple comparison without using parameters such as the rotation speed or the load of the motor 40 .
- the motor drive device 100 can reduce the parameters used for determining the connection state.
- the motor drive device 100 can simplify the conditions used to determine the connection state. As a result, the motor drive device 100 can reduce the processing load and control the motor 40 stably.
- the configuration shown in the above embodiment shows an example of the content of the present disclosure.
- the configuration of the embodiment can be combined with another known technique. A part of the configuration of the embodiment can be omitted or changed without departing from the gist of the present disclosure.
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Abstract
Description
図1は、実施の形態1にかかるモータ駆動装置100の構成を示す図である。モータ駆動装置100は、3相モータであるモータ40を駆動する。モータ40は、複数の固定子巻線を有する。モータ駆動装置100は、インバータ部10と、電流検出部20と、結線切替部30と、制御部50とを有する。
Claims (4)
- 複数の固定子巻線を有するモータへ交流電流を供給するインバータ部と、
前記インバータ部と前記モータとの間に配されて前記固定子巻線の結線状態を切り替える結線切替部と、
前記交流電流の電流値の検出結果である電流情報を基に前記モータの回転子磁束の推定値である推定回転子磁束を算出する回転子磁束推定部と、
前記推定回転子磁束を基に前記結線状態を判定する判定処理部と、
を備えるモータ駆動装置。 - 前記回転子磁束推定部は、前記モータの回転速度および回転位置を推定する過程において求まる前記推定回転子磁束を算出する請求項1に記載のモータ駆動装置。
- 前記結線状態の判定に使用される値である閾値を記憶する判定値記憶部をさらに備え、
前記判定処理部は、前記推定回転子磁束を前記閾値と比較することによって前記結線状態を判定する請求項1または2に記載のモータ駆動装置。 - 前記結線状態の切替えを制御するための結線切替信号を生成する結線切替制御部をさらに備え、
前記判定処理部は、前記結線切替信号と前記結線状態の判定結果とを基に、前記結線状態の異常を判定する請求項1から3のいずれか1つに記載のモータ駆動装置。
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CN202180094295.1A CN116897506A (zh) | 2021-03-17 | 2021-03-17 | 马达驱动装置 |
US18/258,944 US20240039441A1 (en) | 2021-03-17 | 2021-03-17 | Motor drive device |
JP2023506598A JP7433513B2 (ja) | 2021-03-17 | 2021-03-17 | モータ駆動装置 |
PCT/JP2021/010857 WO2022195772A1 (ja) | 2021-03-17 | 2021-03-17 | モータ駆動装置 |
DE112021007295.1T DE112021007295T5 (de) | 2021-03-17 | 2021-03-17 | Motortreibergerät |
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PCT/JP2021/010857 WO2022195772A1 (ja) | 2021-03-17 | 2021-03-17 | モータ駆動装置 |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2019163125A1 (ja) * | 2018-02-26 | 2019-08-29 | 三菱電機株式会社 | 電動機駆動装置及び冷凍サイクル適用機器 |
JP2020010566A (ja) * | 2018-07-11 | 2020-01-16 | 三菱電機株式会社 | モータ制御装置 |
WO2020016972A1 (ja) * | 2018-07-18 | 2020-01-23 | 三菱電機株式会社 | 回転機制御装置、冷媒圧縮装置、冷凍サイクル装置及び空気調和機 |
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EP3651352B1 (en) | 2017-07-07 | 2022-11-09 | Mitsubishi Electric Corporation | Motor drive system and air conditioner |
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- 2021-03-17 CN CN202180094295.1A patent/CN116897506A/zh active Pending
- 2021-03-17 JP JP2023506598A patent/JP7433513B2/ja active Active
- 2021-03-17 DE DE112021007295.1T patent/DE112021007295T5/de active Pending
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WO2019163125A1 (ja) * | 2018-02-26 | 2019-08-29 | 三菱電機株式会社 | 電動機駆動装置及び冷凍サイクル適用機器 |
JP2020010566A (ja) * | 2018-07-11 | 2020-01-16 | 三菱電機株式会社 | モータ制御装置 |
WO2020016972A1 (ja) * | 2018-07-18 | 2020-01-23 | 三菱電機株式会社 | 回転機制御装置、冷媒圧縮装置、冷凍サイクル装置及び空気調和機 |
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CN116897506A (zh) | 2023-10-17 |
US20240039441A1 (en) | 2024-02-01 |
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