WO2022269950A1 - 電動機制御装置 - Google Patents
電動機制御装置 Download PDFInfo
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- WO2022269950A1 WO2022269950A1 PCT/JP2021/048060 JP2021048060W WO2022269950A1 WO 2022269950 A1 WO2022269950 A1 WO 2022269950A1 JP 2021048060 W JP2021048060 W JP 2021048060W WO 2022269950 A1 WO2022269950 A1 WO 2022269950A1
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- electric motor
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- 238000001514 detection method Methods 0.000 claims abstract description 46
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052802 copper Inorganic materials 0.000 claims abstract description 38
- 239000010949 copper Substances 0.000 claims abstract description 38
- 238000012545 processing Methods 0.000 claims description 12
- 230000010354 integration Effects 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 14
- 230000005856 abnormality Effects 0.000 description 10
- 238000005070 sampling Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
- 238000004804 winding Methods 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
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
-
- 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
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/14—Compensating for temperature change
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
-
- 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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/14—Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
-
- 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
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/022—Synchronous motors
-
- 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
-
- 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
- H02P29/60—Controlling or determining the temperature of the motor or of the drive
Definitions
- the present invention relates to a motor control device.
- Patent Document 1 discloses means for detecting a current I and a voltage V on the DC side of a motor control device, and a d-axis current value Id and a q-axis current value controlled by an inverter which is a part of the motor control device.
- means for detecting Iq means for detecting the temperature t inside the induction machine, means for detecting the number of rotations N of the induction machine, and torque calculation for calculating the shaft torque and correcting the temperature based on these detection signals.
- Patent Document 1 power can be calculated without an expensive power detection converter, but the resistance value used to calculate copper loss changes with temperature changes, so the correct value cannot be calculated without using a temperature detector. I can't. Further, if a temperature detector is added, not only the cost of the temperature detector but also various expenses such as a design change of the substrate and a mold change of the production line are incurred, resulting in an increase in cost.
- An object of the present invention is to provide a motor control device that calculates the power consumption of a motor at low cost.
- a converter section that converts an AC voltage into a DC voltage
- an inverter section that converts the DC voltage from the converter section into an AC voltage and supplies the AC voltage to a motor
- a controller that controls the inverter section.
- a current detection unit for detecting a current flowing through the electric motor; a temperature of the electric motor is estimated from the detected current; a resistance value of the electric motor is calculated from the estimated temperature; and a power calculator for calculating copper loss from the value.
- FIG. 1 is a block diagram showing the configuration of a motor control device according to Embodiment 1;
- FIG. 4 is an example of a functional block diagram of a power calculation unit in Example 1.
- FIG. FIG. 5 is a diagram showing the relationship between thermal operating time and current flowing through the motor;
- FIG. 11 is a block diagram showing the configuration of a motor control device according to a second embodiment;
- FIG. 11 is a functional block diagram of an abnormality detection unit in Example 2;
- FIG. 11 is a block diagram showing the configuration of a motor control device according to Embodiment 3;
- FIG. 11 is a functional block diagram of a total consumption calculator in Example 3;
- FIG. 4 is a diagram showing the relationship between estimated temperature, elapsed time, and load current;
- Example 1 will be described using FIGS. 1 to 3.
- FIG. 1 is an example of a block diagram showing the configuration of a motor control device to which the power calculation unit of Embodiment 1 is added.
- FIG. 1 shows a three-phase power supply 100 that supplies power to the motor control device 007, a load to which power is supplied from the motor control device 007, and the like.
- the load is, for example, a PM motor (three-phase permanent magnet synchronous motor) 008.
- the motor control device 007 includes an inverter circuit 004, a converter circuit 001, a current detector 005, a controller 002, a power calculator 003, a current sensor 006, and a memory 009.
- the converter circuit 001 converts the three-phase AC voltage from the external three-phase power supply 100 into a DC voltage Vdc and supplies it to the inverter circuit 004 .
- the inverter circuit 004 converts the DC voltage Vdc into AC voltages (three-phase voltages Vu, Vv, Vw), and supplies (energizes) the three-phase AC voltages Vu, Vv, Vw to the PM electric motor (PM motor) 008 .
- the current sensor 006 is installed so as to be connected to the supply lines of the three-phase AC voltages Vu, Vv, and Vw.
- a current detector 005 detects a load current flowing through the PM motor 008 via a current sensor 006 .
- the current detector 005 detects the u-phase current Iu and the w-phase current Iw via the current sensor 006, calculates Iv based on the current values of Iu and Iw, and calculates the three-phase currents Iu, Iv,
- the d-axis current detection value Id and the q-axis current detection value Iq are calculated by changing the coordinates of Iw.
- the current detector 005 detects the load current value I by vector-combining the d-axis current detection value Id and the q-axis current detection value Iq.
- the controller 002 (inverter control unit) controls the inverter circuit 004 so that the operating state of the PM electric motor 008 approaches the target state.
- the controller 002 receives a speed command value Nref from the outside, and sets three-phase voltage command values Vuref, Vvref, and Vwref for rotating the PM motor at a rotation speed based on the speed command value Nref. generated using the vector control of
- the controller 002 estimates the rotation speed of the PM electric motor 008 using, for example, an induced voltage observer or the like, and calculates the d-axis and q-axis current commands based on the error between the rotation speed and the speed command value Nref.
- Three-phase voltage command values Vuref, Vvref, and Vwref are calculated based on the error between the current command value and the d-axis current detection value Id and q-axis current detection value Iq.
- the inverter circuit 004 generates three-phase AC voltages Vu, Vv, and Vw by performing switching operations with PWM (Pulse Width Modulation) signals based on the three-phase voltage command values Vuref, Vvref, and Vwref. If the PM electric motor 008 is equipped with a position detector, the rotation speed of the PM electric motor 008 may be derived from the time difference result of the output of the position detector and input to the controller 002 .
- PWM Pulse Width Modulation
- the output power from the three-phase power supply 100 is represented by the following formula (1).
- the converter loss (Pconv) in equation (1) is the loss generated by the converter circuit 001 inside the motor control device 007.
- a conversion loss (Ptrans) is a loss generated by the inverter circuit 004 inside the motor control device 007 .
- Core loss (Ps) is loss due to magnetic hysteresis and eddy currents in the magnetic material core inside the PM motor 008 .
- Copper loss (Pc) is the loss of power due to the current in the windings inside PM motor 008 .
- Mechanical loss (Pmechaloss) is loss due to friction of each part during rotation. The mechanical power (Pmecha) is effectively used power that is finally output from the PM motor 008 to the load.
- Equation (3) The calculation of the mechanical output (Pmecha) and the copper loss (Pc) in Equation (2) are represented by Equations (3) and (4), respectively.
- ⁇ is the torque of the PM electric motor 008.
- ⁇ is the speed detection value 310 of the PM motor 008 .
- Kmecha is the mechanical output gain 314;
- Iq is the q-axis current detection value 312 detected by the current detector 005
- Id is the d-axis current detection value 311 detected by the current detector 005
- Rt is the phase resistance of the PM motor 008.
- Kc is the copper loss gain 317;
- the phase resistance Rt changes depending on the temperature T of the PM motor 008.
- the temperature T of the PM motor 008 can be obtained from the thermal curve of the thermal operation time t and the load current I.
- FIG. 3 shows an example of a thermal curve of the thermal operating time t (vertical axis) of the PM motor and the load current I (horizontal axis) flowing through the PM motor.
- FIG. 9 shows the relationship between the estimated temperature of the PM motor, the load current flowing through the PM motor, and the elapsed time, which are used in electronic thermal processing.
- the estimated temperature increases as the load current increases.
- the correspondence relationship between the load current and the estimated temperature can be recorded as a table in the memory of the temperature estimating section, and the temperature of the PM motor can be estimated based on the load current.
- phase resistance Rt and temperature T is expressed by equation (5).
- T is the temperature of the PM motor 008 at that time.
- Rt is the resistance value of the phase resistance of the PM motor 008 when the temperature of the PM motor 008 reaches T.
- R20 is the resistance value of the phase resistance of the PM motor 008 at 20°C.
- ⁇ 20 is the temperature coefficient of resistance of metallic copper at a temperature of 20°C.
- the power calculation unit 003 calculates the power consumption of the PM electric motor 008 using equations (2), (3), (4) and (5).
- the d-axis current detection value 311 and the q-axis current detection value 312 from the current detector 005 and the speed detection value ⁇ 310 from the controller 002 are received, and the mechanical output and copper loss are calculated, and the actual power consumption P is used as a variable. It is stored in the memory 009 and displayed on the external device. Specifically, it will be described with reference to FIG.
- the controller 002, the current detector 005, and the power calculator 003 are composed of a semiconductor integrated circuit (arithmetic control means) such as a microcomputer (microcomputer) or DSP (Digital Signal Processor). One or all of the control units can be configured by hardware such as ASIC (Application Specific Integrated Circuit) or FPGA (Field Programmable Gate Array). Controller 002, current detector 005, DSP and CPU (Central Processing Unit) constituting power calculation unit 003 read a program held in a recording device such as memory, controller 002, current detector 005, and power The processing of the calculation unit 003 is executed.
- a semiconductor integrated circuit such as a microcomputer (microcomputer) or DSP (Digital Signal Processor).
- One or all of the control units can be configured by hardware such as ASIC (Application Specific Integrated Circuit) or FPGA (Field Programmable Gate Array).
- Controller 002, current detector 005, DSP and CPU (Central Processing Unit) constituting power calculation unit 003 read a program held in a
- FIG. 2 is an example of a functional block diagram of the power calculation unit 003 in this embodiment.
- FIG. 2 shows the process of calculating the output data from the input data via the mechanical output calculator 323, the copper loss calculator 324, and the integration processor 325.
- the input data are, for example, the speed detection value ⁇ 310, the d-axis current detection value 311, and the q-axis current detection value 312.
- the output data are, for example, a mechanical output 320, an integrated power consumption value 321, and a copper loss 322.
- the mechanical output calculator 323 has a torque gain 313 and a mechanical output gain 314 .
- Copper loss calculator 324 includes temperature estimator 315 , resistance gain 316 , and copper loss gain 317 .
- the integration processing section 325 has an integration gain 318 and a 1/z (unit delay section) 319 .
- Various gains such as torque gain, resistance gain, and mechanical output gain are set in advance as values such as constants.
- the mechanical output calculation unit 323 will be explained.
- the mechanical output calculator 323 inputs the speed detection value ⁇ 310 received from the controller 002 and the q-axis current detection value 312 received from the current detector 005 .
- the mechanical output calculator 323 multiplies the torque gain 313 by the q-axis current detection value 312 to calculate the actual torque ⁇ of the PM electric motor 008 .
- the mechanical output calculator 323 multiplies the calculated torque ⁇ by the speed detection value ⁇ 310 to calculate the internal quantity of the mechanical output. Then, the mechanical output calculator 323 multiplies the mechanical output gain 314 by the calculated internal amount of the mechanical output to calculate the mechanical output 320 of the PM electric motor 008 .
- the copper loss calculator 324 will be explained. As shown in FIG. 8, a configuration may be employed in which a load current I, which is an input to an electronic thermal processor 701 that protects the temperature of the motor, is used as an input to a temperature estimator 315 .
- the temperature estimator 315 calculates the value of the load current I (the square of the d-axis current detection value 311 and the q-axis current detection value the square root of the sum of the squares of 312).
- the temperature estimator 315 estimates the estimated temperature T of the PM electric motor 008 from the recorded correspondence relationship between the load current and the estimated temperature.
- the copper loss calculator 324 multiplies the estimated temperature by the resistance gain to calculate the actual resistance value Rt of the PM motor 008 .
- the copper loss calculator 324 multiplies the calculated resistance value Rt by the sum of the square of the d-axis current detection value 311 and the square of the q-axis current detection value 312 to calculate the internal amount of copper loss.
- the copper loss calculator 324 multiplies the copper loss gain 317 by the calculated internal amount of copper loss to calculate the copper loss 322 of the PM electric motor 008 .
- the integration processing unit 325 multiplies the sum of the calculated mechanical output 320 and copper loss 322 by the integration gain 318 to calculate power consumption in each processing sampling period.
- the unit delay unit 319 has the previous value and adds it to the power consumption in the current sampling period.
- the final output of the integration processing unit 325 is the power consumption integrated value 321 .
- the mechanical output 320, the copper loss 322, and the integrated power consumption value 321, which are the outputs of the power calculation unit 003 in this embodiment, are stored in the memory 009 as variables.
- the temperature from the detected current value and correcting the resistance value by estimating the temperature from the detected current value and correcting the resistance value, highly accurate copper loss calculation can be performed, and the power consumption of the PM motor can be calculated without using a temperature detector. can be calculated.
- the actual resistance value By estimating the temperature from the detected current value instead of using a temperature detector, the actual resistance value can be corrected. Further, by calculating the copper loss using this resistance value, it is possible to calculate the power consumption of the PM motor with the same accuracy as the copper loss calculation using the thermometer.
- FIG. 4 is an example of a block diagram showing the configuration of the electric motor control device 007 to which the power calculation unit 003, memory 009, timer 011 and abnormality detection unit 010 are added in this embodiment.
- the configurations denoted by the same reference numerals as those in FIG. 1 are the same as those in FIG.
- the abnormality detection unit 010 inputs the data (mechanical output 320 and copper loss 322) stored in the memory 009 and the time information of the timer 011. When an abnormality is detected, an alarm ALsts signal 810 is output.
- FIG. 5 is an example of a functional block diagram of the abnormality detection unit 010 in this embodiment.
- the value of the input variable 801 one of the copper loss 322 and the mechanical output 320 is selected in advance by the user or the like.
- a start time 802 and an end time 803 are set for the anomaly detection unit 010 .
- the abnormality detection unit 010 uses the timer 011 .
- the value of the input variable 801 at the start time 802 passes through the first switch 821 and is integrated at the first switch 821 assuming that the values other than the start time 802 are zero. 805 (starting copper loss 322 or machine power 320).
- the value of the input variable 801 at the end time 803 passes through the second switch 822, and the values other than the end time 803 are integrated in the second switch 822, and the output of the second switch 822 is the end at the end time 803. It becomes the time variable value 806 (copper loss 322 and machine power 320 at the end).
- the anomaly detection unit 010 takes the difference between the starting variable value 805 and the ending variable value 806, which are the outputs of the first switch 821 and the second switch 822, and calculates the actual amount of change 808. Further, an assumed variable change amount 804 as an ideal amount of calculation is set in the anomaly detection unit 010 .
- the anomaly detection unit 010 multiplies the assumed variable change amount 804 by the adjustment gain K Pm 807 to calculate a threshold 809 for safe driving.
- the threshold 809 is compared with the actual amount of change 808, and when the threshold 809 is exceeded, an alarm ALsts signal 810 is output as an abnormality.
- the alarm ALsts signal 810 When the alarm ALsts signal 810 is received by an external device or the like, it is issued as an anomaly notification with a physical sound and light alarm. For example, sound an alarm or flash a lamp.
- FIG. 6 is an example of a block diagram showing the configuration of a motor control device to which the power calculation unit 003, memory 009, timer 011 and total power consumption calculation unit 012 are added in this embodiment.
- the configurations denoted by the same reference numerals as those in FIG. 1 are the same as those in FIG. 1, so descriptions thereof are omitted.
- the total power consumption calculation unit 012 inputs the power consumption 902 (the sum of the mechanical output 320 and the copper loss 322) from the memory 009, the energization time 903, and the time information from the timer 011.
- the output Py of the total power consumption calculator 012 is the total power consumption 904 .
- FIG. 7 is an example of a functional block diagram of the total power consumption calculation unit 012 of this embodiment.
- the total power consumption refer to equation (6).
- the expected energization time 909 is an expected energization time for a certain period of time (for example, yearly, monthly, weekly, etc.).
- Power consumption 902 is the sum of mechanical output 320 from memory 009 and copper loss 322 as shown in equation (2).
- the energization time 903 is the time of the sampling period from the timer 011.
- the operating time 901 is the time during which the power consumption is actually positive within the time of the sampling period.
- the switch 905 passes the operating time 901 and the power consumption 902 to the operating rate calculator 906 . Then, the operation rate calculation unit 906 of the total power consumption calculation unit 012 calculates the operation rate together with the actual energization time 903 in the PM electric motor 008 .
- the total power consumption calculation unit 012 multiplies the operation rate and power consumption 902 .
- the multiplication result is input to the integration processing section (1/z) 907 .
- An integration processing unit 907 integrates up to an annual energization time 909 to calculate and output an annual power consumption 908 .
- the anomaly detection unit 010, the timer 011, and the total power consumption calculation unit 012 shown in the second or third embodiment are implemented by microcomputers (microcomputers), DSPs (Digital Signal Processors), etc., like the controllers described above. It is composed of a semiconductor integrated circuit (arithmetic control means).
- a DSP or CPU Central Processing Unit reads a program held in a recording device such as a memory, and executes processes such as an abnormality detection unit 010, a timer 011, and a total power consumption calculation unit 012.
- the present invention is not limited to the above-described examples, and includes various modifications.
- the above-described embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the described configurations.
- it is possible to replace part of the configuration of one embodiment with the configuration of another embodiment and it is also possible to add the configuration of another embodiment to the configuration of one embodiment.
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Abstract
Description
Claims (7)
- 交流電圧を直流電圧に変換するコンバータ部と、
コンバータ部からの直流電圧から交流電圧に変換し、前記交流電圧を電動機に供給するインバータ部と、
前記インバータ部を制御するインバータ制御部と、
前記電動機に流れる電流を検出する電流検出部と、
検出した前記電流から前記電動機の温度を推定し、推定した前記温度から前記電動機の抵抗値を計算し、計算した前記抵抗値から銅損を計算する電力計算部とを有する電動機制御装置。 - 請求項1に記載の電動機制御装置において、
前記電力計算部は、
q軸検出電流値と速度検出値から機械出力を計算する機械出力計算部を有する電動機制御装置。 - 請求項2に記載の電動機制御装置において、
前記電力計算部は、
前記銅損と前記機械出力に基づいて消費電力積算値を計算する積算処理部を有する電動機制御装置。 - 請求項2に記載の電動機制御装置において、
前記銅損もしくは前記機械出力の開始時間における値と、前記銅損もしくは前記機械出力の終了時間における値との差分を、閾値を比較し、
前記差分が前記閾値を超える場合には、アラーム信号を出力する異常検知部を有する電動機制御装置。 - 請求項2に記載の電動機制御装置において、
前記銅損と前記機械出力の和の消費電力として計算し、前記消費電力がポジティブな時間を運転時間とし、
運転時間と通電時間とから稼働率を計算し、
前記稼働率と前記消費電力と前記通電時間から総電力消費量を計算する総電力消費量計算部を有する電動機制御装置。 - 請求項1に記載の電動機制御装置において、
前記電力計算部は、
前記電流検出部からの負荷電流と前記温度との対応関係から前記電動機の温度を推定する電動機制御装置。 - 請求項6に記載の電動機制御装置において、
前記電力計算部は、
前記電流検出部からのd軸電流検出値とq軸電流検出値から前記負荷電流の値を計算する電動機制御装置。
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US18/271,290 US20240072701A1 (en) | 2021-06-25 | 2021-12-23 | Electric motor control device |
DE112021006954.3T DE112021006954T5 (de) | 2021-06-25 | 2021-12-23 | Elektromotor-Steuervorrichtung |
KR1020237028834A KR20230132859A (ko) | 2021-06-25 | 2021-12-23 | 전동기 제어 장치 |
CN202180093896.0A CN116868503A (zh) | 2021-06-25 | 2021-12-23 | 电动机控制装置 |
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JP2021106115A JP7385628B2 (ja) | 2021-06-25 | 2021-06-25 | 電動機制御装置 |
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Citations (4)
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JP2008168669A (ja) * | 2007-01-09 | 2008-07-24 | Jtekt Corp | 電動パワーステアリング装置 |
US20130110449A1 (en) * | 2011-03-17 | 2013-05-02 | Beijing Jingwei Hirain Technologies Co., Ltd. | Method and device for detecting winding temperature, method and device for thermal protection of a motor |
WO2014109057A1 (ja) * | 2013-01-11 | 2014-07-17 | 三菱電機株式会社 | エネルギアシストシステム選定支援装置、容量選定装置、消費電力計算装置、及びレイアウト生成装置 |
WO2016157382A1 (ja) * | 2015-03-30 | 2016-10-06 | 三菱電機株式会社 | 保護装置およびサーボモータ |
Family Cites Families (1)
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JP2646949B2 (ja) | 1992-12-25 | 1997-08-27 | 三菱電機株式会社 | トルク電気演算方式交流電気動力計 |
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- 2021-06-25 JP JP2021106115A patent/JP7385628B2/ja active Active
- 2021-12-23 CN CN202180093896.0A patent/CN116868503A/zh active Pending
- 2021-12-23 KR KR1020237028834A patent/KR20230132859A/ko unknown
- 2021-12-23 DE DE112021006954.3T patent/DE112021006954T5/de active Pending
- 2021-12-23 WO PCT/JP2021/048060 patent/WO2022269950A1/ja active Application Filing
- 2021-12-23 US US18/271,290 patent/US20240072701A1/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008168669A (ja) * | 2007-01-09 | 2008-07-24 | Jtekt Corp | 電動パワーステアリング装置 |
US20130110449A1 (en) * | 2011-03-17 | 2013-05-02 | Beijing Jingwei Hirain Technologies Co., Ltd. | Method and device for detecting winding temperature, method and device for thermal protection of a motor |
WO2014109057A1 (ja) * | 2013-01-11 | 2014-07-17 | 三菱電機株式会社 | エネルギアシストシステム選定支援装置、容量選定装置、消費電力計算装置、及びレイアウト生成装置 |
WO2016157382A1 (ja) * | 2015-03-30 | 2016-10-06 | 三菱電機株式会社 | 保護装置およびサーボモータ |
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US20240072701A1 (en) | 2024-02-29 |
CN116868503A (zh) | 2023-10-10 |
JP2023004456A (ja) | 2023-01-17 |
KR20230132859A (ko) | 2023-09-18 |
DE112021006954T5 (de) | 2023-12-28 |
JP7385628B2 (ja) | 2023-11-22 |
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