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1. 发明授权

US11056995B2 Synchronous motor drive system and synchronous motor drive method 有权
公开(公告)号：US11056995B2
公开(公告)日：2021-07-06
申请号：US16857023
申请日：2020-04-23
申请人： SYSTEM HOMES COMPANY, LTD.
发明人： Hozo Yoshino
IPC分类号： H02P23/30 , H02P23/26 , H02P27/04 , H02P27/08
摘要： The present disclosure is constructed on the prior art inverter architecture, a pulse code width modulation (PCWM). This is an open loop motor control system without sensing its rotor position. The present disclosure employs a closed loop method to track the optimum efficiency motor operating point directly. A bench load test is conducted to gather information for an AI type control, which includes both load angle vs. voltage command charts and power factor vs. voltage command charts, with load levels as parameters for certain frequency command ranges. This way, the optimum efficiency motor operating points are generated a priori. The AI type control is mechanized to track the optimum efficiency motor operating points.

2. 发明授权

US10391884B2 Drive power control device for electric vehicle 有权
公开(公告)号：US10391884B2
公开(公告)日：2019-08-27
申请号：US15560627
申请日：2016-03-25
申请人： CALSONIC KANSEI CORPORATION
发明人： Toshiyuki Iwahana
IPC分类号： B60L15/20 , H02P29/00 , B60L3/10 , H02P23/20 , H02P23/30
摘要： A drive power control device includes: a modeling error reduction unit configured to calculate a correction torque by performing high-pass filter processing on a correction amount calculated by a correction amount calculation unit; a control motor torque command value calculation unit configured to calculate a control motor torque command value by adding the correction torque to a motor torque command value; and a slip reduction control unit configured to perform, when the vehicle starts traveling or slip is detected, control to reduce slip by switching the cutoff frequency of a high-pass filter HPF to be low as compared with normal traveling.

3. 发明授权

US10095244B2 Motor control apparatus, motor control method, control system, and position estimation method to be used in control system 有权
公开(公告)号：US10095244B2
公开(公告)日：2018-10-09
申请号：US14965364
申请日：2015-12-10
申请人： NIDEC SANKYO CORPORATION
发明人： Jun Otsuji , Akihiro Ito , Hirokazu Watanabe , Hideyuki Odagiri
IPC分类号： H02P1/00 , H02P23/30 , H02P25/034 , G05D3/20 , G05B19/19
摘要： A motor control device may include a position command output means, a first subtraction means that calculates and outputs a position deviation, a position control means, a second subtraction means that calculates and outputs a position deviation, a speed control means that outputs a torque command, a limiter limits the level of the torque command, a motor drive means, and a voltage fluctuation detection means. When the voltage fluctuation detection means detects that the voltage of said power source has dropped below a predetermined reference level, either the position command output means varies the position command so as to reduce the rotational speed of the motor and/or said position control means limits said speed command to be output.

4. 发明授权

US09853588B2 Motor drive control using pulse-width modulation pulse skipping 有权
公开(公告)号：US09853588B2
公开(公告)日：2017-12-26
申请号：US14997900
申请日：2016-01-18
申请人： Emerson Climate Technologies, Inc.
发明人： Charles E. Green , Joseph G. Marcinkiewicz
IPC分类号： H02P1/30 , H02P1/52 , H02P3/00 , H02P7/06 , H02P27/08 , H02P27/04 , H02P23/26 , H02P23/30 , H02P23/14
CPC分类号： H02P27/08 , H02P23/14 , H02P23/26 , H02P23/30 , H02P27/04 , H02P27/085 , H02P2201/15 , H02P2205/05 , H02P2205/07
摘要： A control circuit for a motor of a compressor includes an inverter control module configured to control power switching devices of an inverter to generate output voltages from a DC power supply. The output voltages are applied to windings of the motor. A current control module is configured to generate voltage signals based on a torque demand. The inverter control module controls the power switching devices according to the voltage signals. A selector is configured to output one of an open loop torque value and a closed loop torque value as the torque demand. An open loop torque module is configured to generate the open loop torque value. The open loop torque module is configured to apply an upper limit to the open loop torque value. The upper limit is based on a voltage of the DC power supply.

5. 发明申请

US20160248360A1 LOAD TORQUE ESTIMATION APPARATUS, IMAGE FORMING APPARATUS, LOAD TORQUE ESTIMATION METHOD AND RECORDING MEDIUM 有权
标题翻译：负载扭矩估计装置，图像形成装置，载荷扭矩估计方法和记录介质
公开(公告)号：US20160248360A1
公开(公告)日：2016-08-25
申请号：US15045720
申请日：2016-02-17
申请人： Takeo SEKI
发明人： Takeo SEKI
IPC分类号： H02P23/30
CPC分类号： H02P23/14 , H02P21/20
摘要： A load torque estimation apparatus includes an acquisition unit configured to acquire a smoothed signal, the smoothed signal being obtained by smoothing a signal indicating a composite current of electric currents flowing in respective phases of an electric motor; and an estimation unit configured to estimate load torque of the electric motor based on the smoothed signal and a rotational speed of the electric motor.
摘要翻译：负载转矩估计装置包括：获取单元，被配置为获取平滑信号，所述平滑信号通过平滑指示在电动机的各个相位中流动的电流的复合电流的信号获得; 以及估计单元，被配置为基于平滑信号和电动机的转速来估计电动机的负载转矩。

6. 发明授权

US4918367A Method for controlling the torque of an ac motor 失效
标题翻译：控制交流电机转矩的方法
公开(公告)号：US4918367A
公开(公告)日：1990-04-17
申请号：US306167
申请日：1989-02-06
申请人： Pasi Pohjalainen
发明人： Pasi Pohjalainen
IPC分类号： H02P20060101 , H02P21/30 , H02P23/30
CPC分类号： H02P23/30 , H02P21/30
摘要： The present invention relates to a method for controlling an ac motor supplied by an inverter having several switches. In order that the torque can be adjusted to be as desired as rapidly as possible both with maximum voltage and in the vicinity thereof, one proceeds in accordance with the invention in such a way that a value (.DELTA..gamma.) representing the difference between the reference value and actual value of the angle between the stator flux and rotor flux of the motor is determined on the basis of a value representing the requirement for torque change of the motor, e.g. by means of the difference (.DELTA.T) between the reference valve (T*) and actual valve (T) of the torque, and a quantity representing the magnetic state of the motor, the next switching moment of the switches of the inverter, i.e. the so called limit between flux sectors (.DELTA..phi.), is shifted with a first quantity (k.sub.1 .DELTA..gamma.) proportional to the determined differential value to change the angle (.gamma.) between the stator flux and the rotor flux, i.e. the torque of the motor, in a stepwise manner to be as desired, and that switching moment of the switches of the inverter which is next in turn is shifted with second quantity (k.sub.2 .DELTA..gamma.) proportional to the determined differential value and reverse to the first quantity (k.sub.1 .DELTA..gamma.) to change the rotating speed of the stator flux.
摘要翻译：本发明涉及一种用于控制由具有多个开关的逆变器提供的交流电动机的方法。为了使扭矩能够尽可能快地按最大的电压及其附近尽可能快地进行调节，根据本发明，转矩可以以表示参考值之间的差值（DELTA gamma）的方式进行基于表示电动机转矩变化要求的值来确定电动机的定子磁通和转子磁通之间的角度的值和实际值，例如通过转矩的参考阀（T *）和实际阀（T）之间的差（DELTA T）和表示电动机磁状态的量，逆变器开关的下一个转换时刻，即磁通扇区（DELTA phi）之间的所谓限制以与所确定的微分值成比例的第一量（k1 DELTA gamma）移位，以改变定子磁通和转子磁通之间的角度（γ），即电动机，按照期望的逐步方式，并且接下来的逆变器的开关的开关力矩随着与所确定的差分值成比例并与第一量（k1）成反比的第二量（k2 DELTA伽马）而偏移 DELTA伽马）来改变定子磁通的转速。

7. 发明授权

US11611305B2 Bandwidth-partitioning harmonic regulation for improved acoustic behavior of an electric drive system 有权
公开(公告)号：US11611305B2
公开(公告)日：2023-03-21
申请号：US17078346
申请日：2020-10-23
申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC
发明人： Vinod Chowdary Peddi , Anno Yoo , Brent S. Gagas , Song He
IPC分类号： H02P23/30 , H02P6/10 , H02K7/00 , H02P27/06 , H02P23/04
摘要： A method for controlling operation of a rotary electric machine includes receiving, via a bandwidth-partitioning harmonic compensation regulator (HCR) of a controller, a commanded torque and rotational speed of the electric machine, and calculating, via the HCR in response to enabling conditions, a dq harmonic compensation current and a dq harmonic compensation voltage for one or more predetermined harmonic orders using the commanded torque and the rotational speed. The harmonic compensation current and voltage cancel torque ripple and current ripple in the one or more predetermined harmonic orders. The method may include injecting an acoustic tone at a predetermined harmonic order. The method additionally includes adding the dq harmonic compensation current and voltage to a dq current and voltage command, respectively, to generate adjusted dq current and voltage commands. The electric machine is then controlled using the adjusted dq current and voltage commands.

8. 发明申请

US20210067077A1 Fault-Tolerant Direct Thrust-Force Control Method for Five-Phase Permanent-Magnet Linear Motor with One Open-Circuit Phase Fault 有权
公开(公告)号：US20210067077A1
公开(公告)日：2021-03-04
申请号：US17043705
申请日：2018-01-31
申请人： JIANGSU UNIVERSITY
发明人： Huawei ZHOU , Cheng ZHOU , Guohai LIU , Duo ZHANG
IPC分类号： H02P21/30 , H02P21/14 , H02P25/06 , H02P25/22 , H02P6/00 , H02P29/024 , H02P29/028 , H02P29/032 , H02P23/30 , H02P27/06
摘要： In the fault-tolerant direct thrust-force control (FT-DTC) method, the generalized Clarke transform matrix and its inverse matrix are derived according to the fault-tolerant phase currents. The stator fluxes in α-β plane are deduced based on these. Based on the requirement of circular stator flux trajectory, virtual stator fluxes are defined, and then compensatory voltages in the α-β plane are obtained. Actual stator voltages in the α-β plane are calculated by modulation function of voltage source inverter. Combining with the compensatory voltages, the actual stator voltages and the stator currents, the virtual stator fluxes and the thrust-force are estimated by the flux and thrust-force observers. The thrust-force reference, the stator flux amplitude reference, the observed thrust-force and virtual stator flux are applied to predict virtual stator voltage references. The actual stator voltage references is calculated according to virtual voltage references and compensatory voltages, and are fed to voltage source inverter.

9. 发明授权

US10690138B2 Motor control device, motor control method, and blower apparatus 有权
公开(公告)号：US10690138B2
公开(公告)日：2020-06-23
申请号：US14420456
申请日：2013-05-10
申请人： Panasonic Intellectual Property Management Co., Ltd.
发明人： Ryuta Sasaki , Yasuyuki Yokouchi , Yasushi Kato
IPC分类号： F04D27/00 , H02P23/00 , H02P23/30 , H02P29/40 , H02P23/14 , F24F11/77
摘要： A motor control device which controls a motor for driving a blower unit, comprises: a target motor output calculating section which calculates a target motor output which causes an air flow of air supplied from the blower unit to coincide with a target air flow; and an operation command generating section which obtains the motor output of the motor, and generates a command for controlling a physical amount of the motor such that the motor output coincides with the target motor output based on a result of comparison between the motor output and the target motor output; and the target motor output calculating section is configured to calculate the target motor output as a product of a polynomial of variables derived by dividing the target air flow by the motor speed, and a cube of the motor speed.

10. 发明申请

US20180006593A1 AC-ROTATING-ELECTRIC-MACHINE CONTROL APPARATUS 审中-公开
公开(公告)号：US20180006593A1
公开(公告)日：2018-01-04
申请号：US15540288
申请日：2015-05-11
申请人： Mitsubishi Electric Corporation
发明人： Masutaka WATANABE , Keiichi ENOKI , Yasukazu MURATA , Yoshimasa NISHIJIMA , Shingo HARADA
IPC分类号： H02P25/22 , H02P27/08 , H02P23/30
CPC分类号： H02P25/22 , H02P5/74 , H02P23/30 , H02P27/08 , H02P2201/03
摘要： An AC-rotating-electric-machine control apparatus includes two or more electric-power conversion circuits that control respective voltages to be applied to the two or more groups of multi-phase armature windings, for each of the two or more groups of multi-phase armature windings; each of the two or more electric-power conversion circuits has two or more switching devices for opening or closing the corresponding group of multi-phase armature windings, for each of the phases; the two or more switching devices are switching-controlled in such a way that opening operation or duty control can be applied to the corresponding group of multi-phase armature windings.

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