Methods, systems and apparatus for reducing power loss in an electric motor drive system
    11.
    发明授权
    Methods, systems and apparatus for reducing power loss in an electric motor drive system 有权
    用于减少电动机驱动系统中的功率损耗的方法,系统和装置

    公开(公告)号:US08754603B2

    公开(公告)日:2014-06-17

    申请号:US13183318

    申请日:2011-07-14

    IPC分类号: H02P7/00

    摘要: Methods, system and apparatus are provided for reducing power loss in an electric motor drive system that includes an electric machine and an inverter module. A controller determines whether a torque command (Tcmd) is less than a minimum torque threshold (Tmin) that is required to disable the inverter module, and if so, increments a counter and determines whether the torque command (Tcmd) remains less than the minimum torque threshold (Tmin). When the torque command (Tcmd) remains less than the minimum torque threshold (Tmin), the controller checks to determine whether a current count value (n) maintained at the counter is greater than a count threshold (nth), and if so, the controller can generate a disable signal to disable switching within the inverter module.

    摘要翻译: 提供了用于减少包括电机和逆变器模块的电动机驱动系统中的功率损耗的方法,系统和装置。 控制器确定转矩指令(Tcmd)是否小于禁用变频器模块所需的最小转矩阈值(Tmin),如果是,则增加一个计数器,并确定转矩指令(Tcmd)是否保持小于最小值 转矩阈值(Tmin)。 当扭矩指令(Tcmd)保持小于最小扭矩阈值(Tmin)时,控制器检查以确定计数器上保持的当前计数值(n)是否大于计数阈值(nth),如果是,则 控制器可以产生一个禁用信号,以禁用逆变器模块内的开关。

    Field weakening motor control system and method
    12.
    发明授权
    Field weakening motor control system and method 失效
    弱磁电机控制系统及方法

    公开(公告)号:US07023168B1

    公开(公告)日:2006-04-04

    申请号:US10939553

    申请日:2004-09-13

    IPC分类号: H02P3/18 H02P5/04 H02P5/28

    CPC分类号: H02P21/10 H02P21/0089

    摘要: 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.

    摘要翻译: 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。

    Position sensorless control algorithm for AC machine
    13.
    发明授权
    Position sensorless control algorithm for AC machine 有权
    交流电机无位置传感器控制算法

    公开(公告)号:US06894454B2

    公开(公告)日:2005-05-17

    申请号:US10268503

    申请日:2002-10-10

    CPC分类号: H02P21/00 H02P21/26 H02P21/32

    摘要: 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.

    摘要翻译: 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。

    APPARATUS, SYSTEM, AND METHOD FOR SIMULATING OUTPUTS OF A RESOLVER TO TEST MOTOR-RESOLVER SYSTEMS
    19.
    发明申请
    APPARATUS, SYSTEM, AND METHOD FOR SIMULATING OUTPUTS OF A RESOLVER TO TEST MOTOR-RESOLVER SYSTEMS 有权
    用于模拟分析仪对测试电机分解系统的输出的装置,系统和方法

    公开(公告)号:US20080278106A1

    公开(公告)日:2008-11-13

    申请号:US11747548

    申请日:2007-05-11

    IPC分类号: G03B27/42

    CPC分类号: G03B27/42 G01D5/204

    摘要: An apparatus, system, and method are provided for simulating outputs of a resolver. One apparatus includes an adjustable sine waveform generator for simulating first and second sine wave signals, and an adjustable cosine waveform generator for simulating first and cosine wave signals. The apparatus also includes an adjustable waveform generator and an adjustable gain circuit coupled to the sine waveform generator and cosine waveform generator. The system includes a device simulating a resolver coupled to a motor controller. The device includes an adjustable sine waveform generator and an adjustable cosine waveform generator coupled to an adjustable waveform generator and an adjustable gain circuit. One method includes transmitting a signal simulating at least one resolver fault condition to a motor controller to determine if the motor controller detects the fault condition(s). If the motor controller fails to detect the fault condition(s) and/or transmit an error message, the motor controller is malfunctioning.

    摘要翻译: 提供了一种用于模拟分解器的输出的装置,系统和方法。 一种装置包括用于模拟第一和第二正弦波信号的可调正弦波形发生器和用于模拟第一和余弦波信号的可调余弦波形发生器。 该装置还包括可调波形发生器和耦合到正弦波形发生器和余弦波形发生器的可调增益电路。 该系统包括模拟与马达控制器耦合的旋转变压器的装置。 该装置包括可调正弦波形发生器和耦合到可调波形发生器和可调增益电路的可调余弦波形发生器。 一种方法包括将模拟至少一个分解器故障状况的信号发送到电动机控制器以确定电动机控制器是否检测到故障状况。 如果电机控制器无法检测到故障状况和/或发送错误信息,则电机控制器发生故障。