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11. 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。

12. 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。

13. 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。

14. 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.

15. 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.

16. 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.

17. 发明授权

US09722529B2 Control for pulse width modulated driven motors 有权
公开(公告)号：US09722529B2
公开(公告)日：2017-08-01
申请号：US14922329
申请日：2015-10-26
申请人： Melexis Technologies NV
发明人： Christian Paintz
IPC分类号： H02P27/08 , H02P6/08 , H02P6/182 , H02P6/14
CPC分类号： H02P27/08 , H02P6/085 , H02P6/15 , H02P6/182 , H02P2209/11 , H02P2209/13
摘要： A method for assisting in operating a PWM driven motor comprising for at least one phase of the PWM driven motor: generating a pulse width modulated phase voltage scheme according to a desired phase profile with a base scaling factor, by time multiplexing a first pulse and at least a further pulse within a pulse width modulation period of the phase the first pulse having a pulse width according to a first profile, for that rotor position, multiplied with a first scaling factor, the first profile being in phase with the desired phase profile, and the at least a further pulse having a pulse width corresponds with a further profile, for that rotor position, multiplied with a further scaling factor, the further profile being not in phase with the desired phase profile, whereby the first pulse and the at least one further pulse are positioned within the pulse width modulation period of the phase in at least partially non-overlapping way.

18. 发明申请

US20170077856A1 THREE-PHASE VARIABLE REFERENCE PULSE WIDTH MODULATION 审中-公开
标题翻译：三相可变参考脉冲宽度调制
公开(公告)号：US20170077856A1
公开(公告)日：2017-03-16
申请号：US15251186
申请日：2016-08-30
申请人： Eaton Corporation
发明人： Sayeed Ahmed Mir , John David Neely , Stan Lawrence Seely , John Mendenhall White
IPC分类号： H02P23/00 , H02P25/03 , H02P27/08
CPC分类号： H02P23/0077 , H02M7/5387 , H02P25/03 , H02P27/04 , H02P27/08 , H02P2209/13
摘要： A system includes a three phase AC or brushless DC motor, an inverter and a controller. The inverter is electrically coupled to the motor. The controller is -electrically coupled to the inverter. The controller is configured to control the inverter to deliver a three phase pulse width modulated voltage to the AC motor, wherein the three phase pulse width modulation comprises a repeating two-cycle pattern.
摘要翻译：系统包括三相交流或无刷直流电动机，逆变器和控制器。逆变器电耦合到电动机。控制器电耦合到逆变器。所述控制器被配置为控制所述逆变器以向AC电动机传送三相脉宽调制电压，其中所述三相脉宽调制包括重复的两周期模式。

19. 发明申请

US20160190970A1 Power convertor, controller, and method for changing carrier frequency 有权
标题翻译：电源转换器，控制器和更改载波频率的方法
公开(公告)号：US20160190970A1
公开(公告)日：2016-06-30
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： H02P27/08 , 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.
摘要翻译：功率转换器包括功率转换单元，PWM控制器和变频器。功率转换单元包括多个开关元件。 PWM控制器被配置为执行多个开关元件的PWM控制。变频器配置为更改PWM控制中的载波频率。变频器包括输出器，积分器和频率确定器。输出器被配置为根据关于控制目标的控制偏差来输出控制值。积分器被配置为集成从输出器输出的控制值。频率确定器被配置为基于由积分器获得的积分值来确定载波频率。

20. 发明申请

US20140197772A1 MOTOR CONTROL DEVICE FOR SWITCHING PWM FREQUENCY TO USE THE SAME 有权
标题翻译：用于切换PWM频率以用于其的电动机控制装置
公开(公告)号：US20140197772A1
公开(公告)日：2014-07-17
申请号：US14045586
申请日：2013-10-03
申请人： FANUC CORPORATION
发明人： Yuuki Morita , Daisuke Tajima
IPC分类号： H02P27/08
CPC分类号： H02P27/08 , H02P29/60 , H02P29/68 , H02P2209/13
摘要： A motor control device includes an inverter, a power device temperature obtaining unit, a motor temperature obtaining unit, a power device temperature determination level storage unit, a motor temperature determination level storage unit, a PWM frequency storage unit that stores at least two PWM frequencies including a high PWM frequency a low PWM frequency, a power device temperature determining unit that determines whether or not a temperature of a power device is equal to or higher than a power device temperature determination level, a motor temperature determining unit that determines whether or not a temperature of a motor is equal to or higher than the motor temperature determination level, and a PWM frequency selecting unit that selects a PWM frequency to be given as a command to the inverter.
摘要翻译：电动机控制装置包括逆变器，功率器件温度获取单元，电动机温度获取单元，功率器件温度判定水平存储单元，电动机温度判定水平存储单元，存储至少两个PWM频率的PWM频率存储单元包括高PWM频率的低PWM频率;功率器件温度判定单元，确定功率器件的温度是否等于或高于功率器件温度判定水平;电动机温度判定单元，其判断是否电动机的温度等于或高于电动机温度判定水平，以及PWM频率选择单元，其选择将要给出的PWM频率作为指令给逆变器。

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