公开(公告)号：US08378605B2

公开(公告)日：2013-02-19

申请号：US12652931

申请日：2010-01-06

Applicant: Wei D. Wang ,  Nitinkumar R. Patel ,  Yo Chan Son

Inventor： Wei D. Wang ,  Nitinkumar R. Patel ,  Yo Chan Son

IPC: H02P6/00

CPC classification number: F04B17/03 ,  H02P6/182 ,  H02P29/0241 ,  H02P2203/03

Abstract: A multiphase alternating current permanent magnet synchronous electric motor is coupled to an actuator. A sensorless electric motor drive control system controls operation of the electric motor. An initial phase angle and a rotational speed of a rotor of the electric motor are estimated. Operation of the sensorless electric motor drive control system and the electric motor are monitored using the estimated initial phase angle and the estimated rotational speed of the rotor of the electric motor. A fault in one of the sensorless electric motor drive control system and the electric motor is detected based upon the monitored operation.

Abstract translation: 多相交流永磁同步电动机与致动器连接。 无传感器电动机驱动控制系统控制电动机的运行。 估计电动机的转子的初始相位角和转速。 使用估计的初始相位角和电动机的转子的估计旋转速度监视无传感器电动机驱动控制系统和电动机的操作。 基于所监视的操作来检测无传感器电动机驱动控制系统和电动机之一的故障。

公开(公告)号：US20110163704A1

公开(公告)日：2011-07-07

申请号：US12652931

申请日：2010-01-06

Applicant: Wei D. Wang ,  Nitinkumar R. Patel ,  Yo Chan Son

Inventor： Wei D. Wang ,  Nitinkumar R. Patel ,  Yo Chan Son

IPC: H02P6/12

CPC classification number: F04B17/03 ,  H02P6/182 ,  H02P29/0241 ,  H02P2203/03

Abstract: A multiphase alternating current permanent magnet synchronous electric motor is coupled to an actuator. A sensorless electric motor drive control system controls operation of the electric motor. An initial phase angle and a rotational speed of a rotor of the electric motor are estimated. Operation of the sensorless electric motor drive control system and the electric motor are monitored using the estimated initial phase angle and the estimated rotational speed of the rotor of the electric motor. A fault in one of the sensorless electric motor drive control system and the electric motor is detected based upon the monitored operation.

Abstract translation: 多相交流永磁同步电动机与致动器连接。 无传感器电动机驱动控制系统控制电动机的运行。 估计电动机的转子的初始相位角和转速。 使用估计的初始相位角和电动机的转子的估计旋转速度监视无传感器电动机驱动控制系统和电动机的操作。 基于所监视的操作来检测无传感器电动机驱动控制系统和电动机之一的故障。

公开(公告)号：US20110089876A1

公开(公告)日：2011-04-21

申请号：US12582562

申请日：2009-10-20

Applicant: NITINKUMAR R. PATEL ,  TIM M. GREWE ,  YO CHAN SON

Inventor： NITINKUMAR R. PATEL ,  TIM M. GREWE ,  YO CHAN SON

IPC: H02P6/18

CPC classification number: H02P21/04 ,  B60L3/0038 ,  B60L3/06 ,  H02P21/24 ,  H02P29/032 ,  Y02T10/643

Abstract: A method is provided for operation of an internal permanent magnet motor having a rotor. The method includes determining whether a neutral point access signal is received from the rotor and operating the internal permanent magnet motor using sensorless signals corresponding to a rotor position and a rotor speed of the rotor derived by a first sensorless signal estimation method when the neutral point access signal is received from the rotor, wherein the first sensorless signal estimation method utilizes the neutral point access signal to generate the rotor position and the rotor speed. The method further includes operating the internal permanent magnet motor using sensorless signals corresponding to a rotor position and a rotor speed of the rotor derived by a second sensorless signal estimation method when the neutral point access signal is not received from the rotor, wherein the second sensorless signal estimation method does not utilize the neutral point access signal to generate the rotor position and the rotor speed.

Abstract translation: 提供一种用于具有转子的内部永磁电动机的操作的方法。 该方法包括：当中性点访问时，确定是否从转子接收到中性点访问信号，并使用与转子位置相对应的无传感器信号和由第一无传感器信号估计方法获得的转子的转子速度来操作内部永磁电动机 信号从转子接收，其中第一无传感器信号估计方法利用中性点存取信号产生转子位置和转子速度。 该方法还包括当没有从转子接收到中性点存取信号时，使用与转子位置相对应的无转速信号和由第二无传感器信号估计方法导出的转子的转子速度来操作内部永磁电动机，其中第二无传感器 信号估计方法不利用中性点存取信号产生转子位置和转子转速。

公开(公告)号：US20110089875A1

公开(公告)日：2011-04-21

申请号：US12582534

申请日：2009-10-20

Applicant: NITINKUMAR R. PATEL ,  PETER J. SAVAGIAN ,  YO CHAN SON ,  ROSTAM DEHMOOBED NASRABADI

Inventor： NITINKUMAR R. PATEL ,  PETER J. SAVAGIAN ,  YO CHAN SON ,  ROSTAM DEHMOOBED NASRABADI

IPC: H02P6/16

CPC classification number: H02P21/04 ,  B60L3/0038 ,  H02P21/24 ,  H02P29/032 ,  Y02T10/643

Abstract: Methods and apparatus are provided for a limp home operational mode for an electric motor system. The method includes determining whether a resolver has failed. When the resolver has not failed, operation of the electric motor system uses resolver signals. When the resolver fails, operation of the electric motor system uses sensorless rotor position and rotor speed signals.

Abstract translation: 提供了用于电动机系统的跛行家庭操作模式的方法和装置。 该方法包括确定解析器是否失败。 当解算器没有出现故障时，电机系统的运行使用分解器信号。 当解算器出现故障时，电动机系统的运行使用无传感器转子位置和转子速度信号。

公开(公告)号：US07843162B2

公开(公告)日：2010-11-30

申请号：US12048071

申请日：2008-03-13

Applicant: Bonho Bae ,  Nitinkumar R. Patel ,  Steven E. Schulz ,  James M. Nagashima ,  Jung Sik Yim ,  Seung Ki Sul

Inventor： Bonho Bae ,  Nitinkumar R. Patel ,  Steven E. Schulz ,  James M. Nagashima ,  Jung Sik Yim ,  Seung Ki Sul

IPC: H02P27/04

CPC classification number: H02P21/22

Abstract: Methods and systems are provided for controlling an AC motor via an inverter. The method includes determining a delay-compensated offset based on a synchronous frame current, producing a current error based on a synchronous frame current and a commanded current, producing a voltage error based on an anti-windup offset and the current error, producing a commanded voltage based on the delay-compensated offset and the voltage error, and providing the inverter with the commanded voltage.

Abstract translation: 提供了用于通过逆变器控制AC电动机的方法和系统。 该方法包括基于同步帧电流确定延迟补偿的偏移，基于同步帧电流和指令电流产生电流误差，产生基于抗饱和偏移和当前误差的电压误差，产生命令 基于延迟补偿偏移和电压误差的电压，并向逆变器提供指令电压。

公开(公告)号：US07642737B2

公开(公告)日：2010-01-05

申请号：US11685729

申请日：2007-03-13

Applicant: Bonho Bae ,  Steven E. Schulz ,  Silva Hiti ,  Nitinkumar R. Patel

Inventor： Bonho Bae ,  Steven E. Schulz ,  Silva Hiti ,  Nitinkumar R. Patel

IPC: H02P21/00

CPC classification number: H02P21/22

Abstract: A control architecture for an electrical inverter includes a command limiter that is realized as a circular voltage limiter. The command limiter includes a Cartesian-to-polar converter coupled to a command source such as a synchronous frame current regulator. The Cartesian-to-polar converter provides magnitude and phase components for d-q command voltages. The command limiter further includes a magnitude limiter that limits the magnitude component to the maximum fundamental voltage component of the inverter, and a polar-to-Cartesian converter that converts the limited magnitude component and the phase component into modified d-q command voltages.

Abstract translation: 用于逆变器的控制结构包括实现为圆形电压限制器的指令限制器。 命令限制器包括耦合到诸如同步帧电流调节器的命令源的笛卡尔到极化转换器。 笛卡尔到极化转换器为d-q指令电压提供幅度和相位分量。 命令限制器还包括限幅器，其将幅度分量限制到逆变器的最大基波电压分量;以及极限到笛卡尔转换器，其将受限幅度分量和相位分量转换为修改的d-q指令电压。

公开(公告)号：US07042186B2

公开(公告)日：2006-05-09

申请号：US10720626

申请日：2003-11-24

Applicant: Constantin C. Stancu ,  Silva Hiti ,  Steven E. Schulz ,  Nitinkumar R. Patel

Inventor： Constantin C. Stancu ,  Silva Hiti ,  Steven E. Schulz ,  Nitinkumar R. Patel

IPC: G05B11/36

CPC classification number: H02P6/185 ,  H02P6/183 ,  H02P21/18 ,  H02P2203/11 ,  H02P2207/01

Abstract: A method for decoupling a harmonic signal from an input signal wherein the harmonic signal is harmonic relative to a signal other than the input signal. An angular position of the other signal is multiplied by a value representing the harmonic to obtain an angular position multiple. A harmonic decoupling block uses the angular position multiple to obtain correction signals representing the harmonic signal, and subtracts the correction signals from the input current to decouple the harmonic signal from the input signal. This method is useful for decoupling unwanted harmonics from currents into which high-frequency signals have been injected for control of electric motors.

Abstract translation: 一种用于将谐波信号与输入信号去耦的方法，其中谐波信号是相对于输入信号以外的信号的谐波。 将另一信号的角位置乘以表示谐波的值，以获得角位置倍数。 谐波去耦块使用角位置倍数来获得表示谐波信号的校正信号，并从输入电流中减去校正信号，以将谐波信号与输入信号去耦。 该方法对于将不想要的谐波与已注入高频信号的电流去耦以控制电动机是有用的。

公开(公告)号：US07023168B1

公开(公告)日：2006-04-04

申请号：US10939553

申请日：2004-09-13

Applicant: Nitinkumar R. Patel ,  Steven E. Schulz ,  Seung Ki Sul ,  Bon-Ho Bae

Inventor： Nitinkumar R. Patel ,  Steven E. Schulz ,  Seung Ki Sul ,  Bon-Ho Bae

IPC: H02P3/18 ,  H02P5/04 ,  H02P5/28

CPC classification number: H02P21/10 ,  H02P21/0089

Abstract: A control system for an electric machine includes a flux weakening module, which includes a voltage magnitude calculator that receives d-axis and q-axis command voltages and that generates a voltage magnitude. An error circuit compares the voltage magnitude to a reference voltage and generates an error signal. A controller receives the error signal and generates a feedback flux correction signal. A limiter limits the feedback flux correction signal to a predetermined flux value and generates a limited feedback flux correction signal. A feedforward stator flux generating circuit generates a feedforward stator flux signal. A summing circuit sums the feedforward stator flux signal and the limited feedback flux correction signal to generate a final stator flux command.

Abstract translation: 一种用于电机的控制系统包括磁通削弱模块，其包括接收d轴和q轴指令电压并产生电压幅度的电压幅度计算器。 误差电路将电压幅度与参考电压进行比较，并产生误差信号。 控制器接收误差信号并产生反馈磁通校正信号。 限制器将反馈磁通校正信号限制在预定磁通值，并产生有限的反馈磁通校正信号。 前馈定子通量产生电路产生前馈定子磁通信号。 求和电路将前馈定子磁通信号和有限反馈磁通校正信号相加，以产生最终的定子通量指令。

公开(公告)号：US07002318B1

公开(公告)日：2006-02-21

申请号：US10948630

申请日：2004-09-23

Applicant: Steven E. Schulz ,  Sean E Gleason ,  Nitinkumar R. Patel ,  James M. Nagashima ,  Yu-Seok Jeong ,  Seung Ki Sul ,  Michael Milani

Inventor： Steven E. Schulz ,  Sean E Gleason ,  Nitinkumar R. Patel ,  James M. Nagashima ,  Yu-Seok Jeong ,  Seung Ki Sul ,  Michael Milani

IPC: H02P7/50 ,  B80L3/00

CPC classification number: B60L3/0038 ,  H02P2203/05 ,  Y02T10/642

Abstract: A control system for a motor including a rotor comprises a sensorless sensor module that includes a saliency-based estimator module that generates a first rotor position signal based on saliency and a back electromotive force (emf) estimator module that generates a second rotor position signal based on back emf. A selector selects the first rotor position signal for rotor speeds below a first rotor speed and the second rotor position signal for rotor speeds above the first rotor speed. A rotor position sensor senses a position of the rotor and generates a third rotor position signal. A fault detection module senses faults in the rotor position sensor and outputs the third rotor position signal when a fault is not detected and one of the first and second rotor position signals when the fault is detected. An indirect field oriented control (IFOC) system controls the motor based on a selected one of the first, second and third rotor position signals.

Abstract translation: 一种用于包括转子的电动机的控制系统包括无传感器传感器模块，其包括基于显着性产生第一转子位置信号的基于显着的估计器模块和产生基于第二转子位置信号的反电动势（emf）估计器模块 在后面emf 选择器选择转子速度低于第一转子速度的第一转子位置信号和用于转子速度高于第一转子速度的第二转子位置信号。 转子位置传感器感测转子的位置并产生第三转子位置信号。 当检测到故障时，故障检测模块检测转子位置传感器中的故障并输出第三转子位置信号，当检测到故障时，第一和第二转子位置信号中的一个。 间接磁场定向控制（IFOC）系统基于第一，第二和第三转子位置信号中选定的一个来控制电动机。

公开(公告)号：US06894454B2

公开(公告)日：2005-05-17

申请号：US10268503

申请日：2002-10-10

Applicant: Nitinkumar R. Patel ,  Steven E. Schulz ,  James M. Nagashima ,  Seung Ki Sul ,  Yo-Chan Son ,  Bon-Ho Bae

Inventor： Nitinkumar R. Patel ,  Steven E. Schulz ,  James M. Nagashima ,  Seung Ki Sul ,  Yo-Chan Son ,  Bon-Ho Bae

IPC: H02P21/00 ,  H02P1/46 ,  H02P6/18 ,  H02P27/04

CPC classification number: H02P21/00 ,  H02P21/26 ,  H02P21/32

Abstract: A control system for an electric motor including an inverter for providing power to the electric motor, a controller for controlling the inverter, a first motor speed control block in the controller injecting a high frequency signal into the electric motor to determine the speed and position of the electric motor, a second motor speed control block in the controller detecting the back electromotive force to determine the speed and position of the electric motor, and a transition control block in said controller to vary operation between the first motor speed control block and the second motor speed control block.

Abstract translation: 一种用于电动机的控制系统，包括用于向电动机提供电力的逆变器，用于控制逆变器的控制器，控制器中的第一电动机速度控制块，将高频信号注入电动机以确定速度和位置 所述电动机，所述控制器中的第二电动机速度控制块检测所述反电动势以确定所述电动机的速度和位置;以及所述控制器中的转换控制块，以改变所述第一电动机速度控制块和所述第二电动机速度控制块之间的操作 电机速度控制块。