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    • 6. 发明授权
    • Method and apparatus for increased current stability in a PWM drive
    • 在PWM驱动中提高电流稳定性的方法和装置
    • US08330405B2
    • 2012-12-11
    • US12487012
    • 2009-06-18
    • Semyon RoyakMark M. HarbaughThomas A. NondahlJingbo LiuPeter B. SchmidtRobert J. Breitzmann
    • Semyon RoyakMark M. HarbaughThomas A. NondahlJingbo LiuPeter B. SchmidtRobert J. Breitzmann
    • H03K5/00
    • H03K17/14H02P21/00
    • The present invention provides an improved current regulator for PWM based drives for electric motors. The invention provides compensation for the rotor position signal for delays introduced due to the PWM algorithm and for digital sampling present in such a drive. Current regulator commonly operate in a two-phase reference frame, requiring forward and reverse coordinate transformations between the physical current values and the two-phase reference frame variables. The present invention provides an improved compensation in the forward transformation by determining the phase lag between the commanded voltage reference and the output voltage reference and by further compensating the forward transformation for errors introduced due to sampling the current either at different sampling instances than the rotor position or at multiple sampling instances during a carrier period. Additionally, compensation during the reverse transformation is provided to compensate for errors introduced due to sampling the current and rotor position.
    • 本发明提供一种用于电动机的基于PWM的驱动器的改进的电流调节器。 本发明为由于PWM算法引入的延迟以及在这种驱动中存在的数字采样而为转子位置信号提供补偿。 电流调节器通常在两相参考系中工作,需要在物理电流值和两相参考帧变量之间进行正向和反向坐标变换。 本发明通过确定指令的电压基准和输出电压基准之间的相位滞后来提供正向变换中的改进的补偿,并且通过进一步补偿由于在不同的采样情况下比转子位置采样电流引入的误差的正向变换 或在载波周期期间的多个采样实例。 另外,在逆变换期间的补偿被提供以补偿由于对当前和转子位置的采样引入的误差。
    • 7. 发明授权
    • Torque limit of PM motors for field-weakening region operation
    • 弱磁区域运行的PM电机的转矩极限
    • US08115437B2
    • 2012-02-14
    • US12036099
    • 2008-02-22
    • Semyon RoyakMark M. Harbaugh
    • Semyon RoyakMark M. Harbaugh
    • H02P7/00
    • H02P21/06H02P21/0085H02P21/0089H02P2207/05
    • The invention includes a motor controller and technique for controlling a permanent magnet motor. In accordance with one aspect of the present technique, a permanent magnet motor is controlled by receiving a torque command, determining a physical torque limit based on a stator frequency, determining a theoretical torque limit based on a maximum available voltage and motor inductance ratio, and limiting the torque command to the smaller of the physical torque limit and the theoretical torque limit. Receiving the torque command may include normalizing the torque command to obtain a normalized torque command, determining the physical torque limit may include determining a normalized physical torque limit, determining a theoretical torque limit may include determining a normalized theoretical torque limit, and limiting the torque command may include limiting the normalized torque command to the smaller of the normalized physical torque limit and the normalized theoretical torque limit.
    • 本发明包括用于控制永磁电动机的电动机控制器和技术。 根据本技术的一个方面,通过接收转矩指令,基于定子频率确定物理转矩极限,基于最大可用电压和电动机电感比确定理论转矩极限来控制永磁电动机,以及 将转矩指令限制在较小的物理转矩极限和理论转矩极限。 接收转矩指令可以包括归一化转矩指令以获得归一化的转矩指令,确定物理转矩限制可以包括确定归一化的物理转矩限制,确定理论转矩极限可以包括确定归一化的理论转矩极限,并限制转矩指令 可以包括将归一化转矩指令限制为归一化物理转矩极限和归一化理论转矩极限中的较小者。
    • 8. 发明申请
    • Method and Apparatus for Increased Current Stability in a PWM Drive
    • PWM驱动电流稳定性的提高方法和装置
    • US20100320948A1
    • 2010-12-23
    • US12487012
    • 2009-06-18
    • Semyon RoyakMark M. HarbaughThomas A. NondahlJingbo LiuPeter B. SchmidtRobert J. Breitzmann
    • Semyon RoyakMark M. HarbaughThomas A. NondahlJingbo LiuPeter B. SchmidtRobert J. Breitzmann
    • H03K5/00
    • H03K17/14H02P21/00
    • The present invention provides an improved current regulator for PWM based drives for electric motors. The invention provides compensation for the rotor position signal for delays introduced due to the PWM algorithm and for digital sampling present in such a drive. Current regulator commonly operate in a two-phase reference frame, requiring forward and reverse coordinate transformations between the physical current values and the two-phase reference frame variables. The present invention provides an improved compensation in the forward transformation by determining the phase lag between the commanded voltage reference and the output voltage reference and by further compensating the forward transformation for errors introduced due to sampling the current either at different sampling instances than the rotor position or at multiple sampling instances during a carrier period. Additionally, compensation during the reverse transformation is provided to compensate for errors introduced due to sampling the current and rotor position.
    • 本发明提供一种用于电动机的基于PWM的驱动器的改进的电流调节器。 本发明为由于PWM算法引入的延迟以及在这种驱动中存在的数字采样而为转子位置信号提供补偿。 电流调节器通常在两相参考系中工作,需要在物理电流值和两相参考帧变量之间进行正向和反向坐标变换。 本发明通过确定指令的电压基准和输出电压基准之间的相位滞后来提供正向变换中的改进的补偿,并且通过进一步补偿由于在不同的采样情况下比转子位置采样电流引入的误差的正向变换 或在载波周期期间的多个采样实例。 另外,在逆变换期间的补偿被提供以补偿由于对当前和转子位置的采样引入的误差。
    • 10. 发明授权
    • Flux position identifier using high frequency injection
    • 磁通位置标识符使用高频注入
    • US06831440B1
    • 2004-12-14
    • US10610427
    • 2003-06-30
    • Semyon RoyakMark M. Harbaugh
    • Semyon RoyakMark M. Harbaugh
    • H02P124
    • H02P21/141
    • A method and apparatus for use with a controller that uses a flux angle position value to control a three phase induction machine, the method for determining an instantaneous flux angle position value in the machine where the machine is characterized by a system specific dominant harmonic frequency number DH that is at least two, the method comprising the steps of injecting a high frequency voltage signal having a high frequency value into the machine thereby generating a high frequency current within the stator windings, obtaining a high frequency feedback signal from the machine, mathematically combining the high frequency value and the dominant harmonic number DH to provide an instantaneous modified angle, using the feedback signal to identify X consecutive calculating instances during each Y consecutive feedback signal cycles where Y is at least two, at each of the X different calculating instances, identifying an instantaneous flux angle position value by mathematically combining a shift angle with the instantaneous modified angle where the shift angles corresponding to each of the X different calculating instances are all different and providing the instantaneous flux angle position value to the controller.
    • 一种与使用磁通角位置值来控制三相感应电机的控制器一起使用的方法和装置,用于确定机器中瞬时磁通角位置值的方法,其中机器的特征在于系统特有的主谐波频数 DH至少为2,该方法包括以下步骤:将具有高频值的高频电压信号注入机器中,从而在定子绕组内产生高频电流,从机器获得高频反馈信号,以数学方式组合 高频值和主要谐波数DH提供瞬时修改的角度,在X个不同的计算实例中的每一个处使用反馈信号来识别X个连续反馈信号周期中的每个Y个连续计算实例,其中Y是至少两个, 通过数学组合识别瞬时通量角位置值 具有瞬时修正角度的换档角度,其中对应于X个不同计算实例中的每一个的换档角度都是不同的,并且向控制器提供瞬时通量角位置值。