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11. 发明授权

US09899936B2 Offset voltage generator and method for generating an offset voltage of three-phase inverter 有权
公开(公告)号：US09899936B2
公开(公告)日：2018-02-20
申请号：US15098238
申请日：2016-04-13
申请人： LSIS CO., LTD.
发明人： Hak-Jun Lee
IPC分类号： H02M7/5387 , H02M7/44 , H02M1/12 , H02P27/08 , H02M1/00 , H02M7/483 , H02M7/497
CPC分类号： H02M7/44 , H02M1/12 , H02M7/483 , H02M7/497 , H02M7/53873 , H02M2001/0025 , H02M2007/53876 , H02P27/08 , H02P27/085 , H02P2209/13
摘要： In one embodiment, an offset voltage generator includes a first limiter configured to compare a first phase-voltage signal with a maximum limit value and a minimum limit value to output a first limit-voltage signal; a second limiter configured to compare a second phase-voltage signal with the maximum limit value and the minimum limit value to output a second limit-voltage signal; a third limiter configured to compare a third phase-voltage signal with the maximum limit value and the minimum limit value to output a third limit-voltage signal; and a summer configured to add a difference between the first phase-voltage signal and the first limit-voltage signal, a difference between the second phase-voltage signal and the second limit-voltage signal, and a difference between the third phase-voltage signal and the third limit-voltage signal, to output an offset voltage.

12. 发明授权

US09755562B2 Power convertor, controller, and method for changing carrier frequency 有权
公开(公告)号：US09755562B2
公开(公告)日：2017-09-05
申请号：US14757846
申请日：2015-12-24
申请人： KABUSHIKI KAISHA YASKAWA DENKI
发明人： Akira Yamazaki , Yoichi Yano
IPC分类号： H02P27/04 , H02P27/08 , H02P21/06 , H02P21/00 , H02P27/16
CPC分类号： H02P27/08 , H02P21/0021 , H02P21/06 , H02P27/085 , H02P27/16 , H02P2205/01 , H02P2209/13
摘要： A power convertor includes a power conversion unit, a PWM controller, and a frequency changer. The power conversion unit includes a plurality of switching elements. The PWM controller is configured to perform PWM control of the plurality of switching elements. The frequency changer is configured to change a carrier frequency in the PWM control. The frequency changer includes an outputter, an integrator, and a frequency determiner. The outputter is configured to output a control value in accordance with a control deviation with respect to a control target. The integrator is configured to integrate the control value output from the outputter. The frequency determiner is configured to determine the carrier frequency based on an integral value obtained by the integrator.

13. 发明申请

US20170068233A1 MOTOR DRIVING APPARATUS, HOME APPLIANCE INCLUDING THE SAME, AND MOBILE TERMINAL 审中-公开
标题翻译：电机驱动装置，包括它们的家用电器和移动终端
公开(公告)号：US20170068233A1
公开(公告)日：2017-03-09
申请号：US15261014
申请日：2016-09-09
申请人： LG ELECTRONICS INC.
发明人： Cheonsu Park
IPC分类号： G05B19/042 , H02P6/14 , H02P27/08
CPC分类号： G05B19/0428 , G05B2219/24024 , H02P6/14 , H02P27/08 , H02P31/00 , H02P2209/13
摘要： A motor driving apparatus including an inverter having a plurality of switching devices, wherein the inverter converts a direct current (DC) power into an alternating current (AC) power according to switching of the switching devices and supplies the AC power to a motor, and a controller to control the inverter, wherein the controller performs a control operation such that a switching frequency of the respective switching devices of the inverter remains constant in a first mode corresponding to a motor operation mode and performs a control operation to change the switching frequency of the respective switching devices of the inverter in a second mode corresponding to a sound output mode for fault diagnosis to output sound corresponding to the changed switching frequency.
摘要翻译：一种电动机驱动装置，包括具有多个开关装置的逆变器，其中，逆变器根据开关装置的切换将直流（DC）功率转换成交流（AC）电力，并将交流电力提供给电动机，并且用于控制逆变器的控制器，其中所述控制器执行控制操作，使得所述逆变器的各个开关装置的开关频率在对应于电动机运行模式的第一模式中保持恒定，并且执行控制操作以改变所述逆变器的开关频率对应于用于故障诊断的声音输出模式的第二模式的逆变器的各个开关装置输出对应于改变的开关频率的声音。

14. 发明申请

US20160308460A1 OFFSET VOLTAGE GENERATOR AND METHOD FOR GENERATING AN OFFSET VOLTAGE OF THREE-PHASE INVERTER 有权
标题翻译：偏置电压发生器和产生三相逆变器偏置电压的方法
公开(公告)号：US20160308460A1
公开(公告)日：2016-10-20
申请号：US15098238
申请日：2016-04-13
申请人： LSIS CO., LTD.
发明人： Hak-Jun Lee
IPC分类号： H02M7/44
CPC分类号： H02M7/44 , H02M1/12 , H02M7/483 , H02M7/497 , H02M7/53873 , H02M2001/0025 , H02M2007/53876 , H02P27/08 , H02P27/085 , H02P2209/13
摘要： In one embodiment, an offset voltage generator includes a first limiter configured to compare a first phase-voltage signal with a maximum limit value and a minimum limit value to output a first limit-voltage signal; a second limiter configured to compare a second phase-voltage signal with the maximum limit value and the minimum limit value to output a second limit-voltage signal; a third limiter configured to compare a third phase-voltage signal with the maximum limit value and the minimum limit value to output a third limit-voltage signal; and a summer configured to add a difference between the first phase-voltage signal and the first limit-voltage signal, a difference between the second phase-voltage signal and the second limit-voltage signal, and a difference between the third phase-voltage signal and the third limit-voltage signal, to output an offset voltage.
摘要翻译：在一个实施例中，偏移电压发生器包括：第一限幅器，被配置为将第一相电压信号与最大限制值和最小限制值进行比较，以输出第一极限电压信号; 第二限幅器，被配置为将第二相电压信号与所述最大限制值和所述最小限制值进行比较，以输出第二极限电压信号; 第三限幅器，被配置为将第三相电压信号与所述最大限制值和所述最小限制值进行比较，以输出第三限位电压信号; 以及加法器，其将所述第一相电压信号和所述第一极限电压信号之间的差值，所述第二相电压信号和所述第二限制电压信号之间的差以及所述第三相电压信号和第三极限电压信号，以输出偏移电压。

15. 发明授权

US09077275B2 Rotor position estimating device, electric motor control system and rotor position estimating method 有权
标题翻译：转子位置估算装置，电机控制系统和转子位置估算方法
公开(公告)号：US09077275B2
公开(公告)日：2015-07-07
申请号：US13960209
申请日：2013-08-06
申请人： Hichirosai Oyobe , Takuya Nishimoto , Hiroyuki Oyanagi
发明人： Hichirosai Oyobe , Takuya Nishimoto , Hiroyuki Oyanagi
IPC分类号： H02P6/14 , H02P21/00 , H02P27/08 , H02P21/04 , H02P21/14
CPC分类号： H02P21/0096 , H02P21/04 , H02P21/18 , H02P21/22 , H02P27/085 , H02P2201/07 , H02P2209/13
摘要： A rotor position estimating device includes a voltage application unit, a current detecting unit and an estimating unit. The voltage application unit is configured to apply a d-axis voltage to an electric motor including a salient-pole rotor during a stop of the electric motor. The current detecting unit is configured to detect a q-axis current flowing through the electric motor at the time when the d-axis voltage is applied. The estimating unit is configured to estimate a rotor position during a stop of the electric motor on the basis of the q-axis current detected by the current detecting unit. The voltage application unit is configured to set a voltage application time in correspondence with peak timing at which the q-axis current reaches a peak in a transitional response characteristic of the q-axis current at the time when the d-axis voltage is applied.
摘要翻译：转子位置估计装置包括电压施加单元，电流检测单元和估计单元。电压施加单元被配置为在电动机停止期间向包括凸极转子的电动机施加d轴电压。电流检测单元被配置为在施加d轴电压时检测流过电动机的q轴电流。估计单元被配置为基于由电流检测单元检测的q轴电流来估计电动机停止期间的转子位置。电压施加单元被配置为根据施加d轴电压时的q轴电流的过渡响应特性中的q轴电流达到峰值的峰值定时来设定电压施加时间。

16. 发明申请

US20140062353A1 ROTOR POSITION ESTIMATING DEVICE, ELECTRIC MOTOR CONTROL SYSTEM AND ROTOR POSITION ESTIMATING METHOD 有权
标题翻译：转子位置估计装置，电动机控制系统和转子位置估计方法
公开(公告)号：US20140062353A1
公开(公告)日：2014-03-06
申请号：US13960209
申请日：2013-08-06
申请人： Hichirosai OYOBE , Takuya NISHIMOTO , Hiroyuki OYANAGI
发明人： Hichirosai OYOBE , Takuya NISHIMOTO , Hiroyuki OYANAGI
IPC分类号： H02P21/00
CPC分类号： H02P21/0096 , H02P21/04 , H02P21/18 , H02P21/22 , H02P27/085 , H02P2201/07 , H02P2209/13
摘要： A rotor position estimating device includes a voltage application unit, a current detecting unit and an estimating unit. The voltage application unit is configured to apply a d-axis voltage to an electric motor including a salient-pole rotor during a stop of the electric motor. The current detecting unit is configured to detect a q-axis current flowing through the electric motor at the time when the d-axis voltage is applied. The estimating unit is configured to estimate a rotor position during a stop of the electric motor on the basis of the q-axis current detected by the current detecting unit. The voltage application unit is configured to set a voltage application time in correspondence with peak timing at which the q-axis current reaches a peak in a transitional response characteristic of the q-axis current at the time when the d-axis voltage is applied.
摘要翻译：转子位置估计装置包括电压施加单元，电流检测单元和估计单元。电压施加单元被配置为在电动机停止期间向包括凸极转子的电动机施加d轴电压。电流检测单元被配置为在施加d轴电压时检测流过电动机的q轴电流。估计单元被配置为基于由电流检测单元检测的q轴电流来估计电动机停止期间的转子位置。电压施加单元被配置为根据施加d轴电压时的q轴电流的过渡响应特性中的q轴电流达到峰值的峰值定时来设定电压施加时间。

17. 发明授权

US11876474B2 Linear resonant device, and braking method for same 有权
公开(公告)号：US11876474B2
公开(公告)日：2024-01-16
申请号：US17293377
申请日：2019-12-12
申请人： SHANGHAI AWINIC TECHNOLOGY CO., LTD
发明人： Guanxing Zhao , Shaofu Wu , Dajun Wu , Zhijun Meng
IPC分类号： H04M19/04 , H02P3/02 , H02P25/032 , G06F3/01 , H02P3/18 , H02P25/06
CPC分类号： H02P3/02 , G06F3/016 , H02P3/18 , H02P25/032 , H02P25/06 , H02P2209/13
摘要： A linear resonant device and a braking method for the same. The linear resonant device comprises a linear resonant motor and a drive chip. The drive chip pre-stores a drive waveform and at least one first braking waveform therein. The method comprises: determining, in response to a braking instruction, whether vibration of the linear resonant motor meets a first condition while being driven by the drive waveform; and if so, controlling the drive chip to drive, by using the first braking waveform, the linear resonant motor and to conduct a first braking process for the linear resonant motor, wherein the first braking waveform comprises at least two pulse waveforms, and an amplitude value of each of the at least two pulse waveforms gradually decreases along a propagation direction of the first braking waveform.

18. 发明申请

US20190173410A1 CONVERTER PULSE WIDTH MODULATION STRATEGIES FOR THREE PHASE REGENERATIVE DRIVES 审中-公开
公开(公告)号：US20190173410A1
公开(公告)日：2019-06-06
申请号：US15832216
申请日：2017-12-05
申请人： OTIS ELEVATOR COMPANY
发明人： Ismail Agirman
IPC分类号： H02P27/08 , H02P27/16 , H02P3/14
CPC分类号： H02P27/085 , H02M1/126 , H02M5/4585 , H02M7/219 , H02M7/5395 , H02M2001/0009 , H02M2001/0048 , H02P3/14 , H02P27/16 , H02P2209/13
摘要： A three-phase regenerative drive employing multiple converter pulse width modulation (PWM) strategies. The drive includes a three-phase converter having inputs for connection to a three-phase AC source, the three-phase converter having three phase legs, a DC bus operably connected to the three-phase converter wherein the three phase converter is configured to direct current from the three-phase AC source to the DC bus, and a three-phase inverter operably connected to the DC bus and a motor, the three phase inverter configured to draw current from the DC bus and provide three phase command signals to the motor. The three-phase converter employs a first PWM strategy to supply current to the DC bus, and the converter employs a second PWM strategy to supply current to the DC bus if a total current in the three phase legs exceeds a selected threshold.

19. 发明申请

US20180219493A1 Method for Operating a Frequency Converter and Frequency Converter 审中-公开
公开(公告)号：US20180219493A1
公开(公告)日：2018-08-02
申请号：US15746738
申请日：2016-07-19
申请人： Lenze Automation GmbH
发明人： Fritz WITTE , Thomas PETERSEN , Dirk DUESTERBERG
IPC分类号： H02M7/5387 , H02P27/14
CPC分类号： H02M7/53875 , H02M2007/53876 , H02P27/08 , H02P27/14 , H02P2209/13
摘要： A method is provided for operating a frequency converter, which is designed to drive a three-phase motor, wherein the frequency converter has three half-bridges each having at least two switches. The method includes the following steps: generating three phase voltages for the three-phase motor by a pulse width modulation, wherein, for the pulse width modulation, various switching patterns of the switches are activated, wherein specific star point voltages ensue for various groups of switching patterns; and in at least one operating state of the frequency converter, within a respective period of the pulse width modulation, activating only those switching patterns in which an identical star point voltage ensues.

20. 发明授权

US09812940B2 Offset voltage generator and method for generating an offset voltage of three-phase inverter 有权
公开(公告)号：US09812940B2
公开(公告)日：2017-11-07
申请号：US15098203
申请日：2016-04-13
申请人： LSIS CO., LTD.
发明人： Hak-Jun Lee , An-No Yoo
IPC分类号： H02M1/08 , H02M1/12 , H02M7/5387 , H02M7/44 , H02P27/06 , H02P27/08 , H02M7/5395 , H02M1/00
CPC分类号： H02M1/08 , H02M1/12 , H02M7/44 , H02M7/53871 , H02M7/53873 , H02M7/5395 , H02M2001/0025 , H02M2001/0048 , H02M2007/53876 , H02P27/06 , H02P27/08 , H02P27/085 , H02P2209/13 , Y02B70/1491
摘要： In an embodiment, an offset voltage generator includes a first limiter configured to compare a first phase-voltage signal with a maximum limit value and a minimum limit value to output a first limit-voltage signal; a second limiter configured to compare a second phase-voltage signal with the maximum limit value and the minimum limit value to output a second limit-voltage signal; a third limiter configured to compare a third phase-voltage signal with the maximum limit value and the minimum limit value to output a third limit-voltage signal; and a summer configured to add a difference between the first phase-voltage signal and the first limit-voltage signal, a difference between the second phase-voltage signal and the second limit-voltage signal, and a difference between the third phase-voltage signal and the third limit-voltage signal, to output an offset voltage.

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