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11 条记录 (耗时 0.025 秒)

    Decoupling a harmonic signal from a signal path
    4.
    发明申请
    Decoupling a harmonic signal from a signal path 失效
    从信号路径去耦合一个谐波信号

    公开(公告)号：US20050110450A1

    公开(公告)日：2005-05-26

    申请号：US10720626

    申请日：2003-11-24

    申请人： Constantin Stancu ,  Silva Hiti ,  Steven Schulz ,  Nitinkumar Patel

    发明人： Constantin Stancu ,  Silva Hiti ,  Steven Schulz ,  Nitinkumar Patel

    IPC分类号： G05B11/36 ,  H02P6/18 ,  H02P21/14 ,  H04B20060101

    CPC分类号： H02P6/185 ,  H02P6/183 ,  H02P21/18 ,  H02P2203/11 ,  H02P2207/01

    摘要： 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.

    摘要翻译： 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。

    Method and apparatus for sensorless position control of a permanent magnet synchronous motor (PMSM) drive system
    5.
    发明申请
    Method and apparatus for sensorless position control of a permanent magnet synchronous motor (PMSM) drive system 失效
    永磁同步电机（PMSM）驱动系统的无传感器位置控制方法和装置

    公开(公告)号：US20070132415A1

    公开(公告)日：2007-06-14

    申请号：US11300525

    申请日：2005-12-14

    申请人： Nitinkumar Patel ,  Bon-Ho Bae ,  James Nagashima

    发明人： Nitinkumar Patel ,  Bon-Ho Bae ,  James Nagashima

    IPC分类号： H02P7/00

    CPC分类号： H02P21/24 ,  H02P25/03

    摘要： Methods and apparatus are provided for generating zero-sequence voltages based on voltage commands and a motor output signal. At least one of the methods includes, but is not limited to, receiving a torque command and generating three-phase voltage commands based on the torque command. The method also includes, but is not limited to, generating a motor output responsive to the three-phase voltage commands and generating three-phase zero-sequence voltage samples based on the three-phase voltage commands and the motor output.

    摘要翻译： 提供了基于电压指令和电机输出信号产生零序电压的方法和装置。 方法中的至少一个包括但不限于接收转矩指令并且基于转矩指令产生三相电压命令。 该方法还包括但不限于响应于三相电压命令产生电动机输出并且基于三相电压命令和电动机输出产生三相零序电压采样。

    Method and system for managing processor execution time utilizing variable frequency switching
    6.
    发明申请
    Method and system for managing processor execution time utilizing variable frequency switching 有权

    公开(公告)号：US20050073272A1

    公开(公告)日：2005-04-07

    申请号：US10676529

    申请日：2003-10-01

    申请人： James Nagashima ,  Thomas O'Meara ,  Nitinkumar Patel ,  Steven Schulz

    发明人： James Nagashima ,  Thomas O'Meara ,  Nitinkumar Patel ,  Steven Schulz

    IPC分类号： H02P3/00 ,  H02P5/00 ,  H02P23/00

    CPC分类号： H02P23/0004

    摘要： The present invention includes a method for managing processor execution time in a motor controller. The method includes receiving motor speed data, comparing the received motor speed data to predetermined motor speed ranges, determining a motor speed range based on the comparison, and modulating an inverter switching frequency of the motor controller processor based on the motor speed range. The step of receiving motor speed data may include receiving machine terminal information, processing the received machine terminal information utilizing a sensorless control algorithm, and determining motor speed data based on the processed information. The step of modulating the inverter switching frequency may include determining a modified inverter switching frequency value based on the determined motor speed range and providing the modified inverter switching frequency value to a processor control algorithm. In one embodiment, the processor control algorithm modifies the inverter switching frequency based on the modified inverter switching frequency value.

    Start-up and restart of interior permanent magnet machines
    7.
    发明申请
    Start-up and restart of interior permanent magnet machines 有权
    启动和重新启动内置永磁机

    公开(公告)号：US20060097688A1

    公开(公告)日：2006-05-11

    申请号：US10984269

    申请日：2004-11-09

    申请人： Nitinkumar Patel ,  Steven Schulz ,  Thomas O'Meara

    发明人： Nitinkumar Patel ,  Steven Schulz ,  Thomas O'Meara

    IPC分类号： H02P1/46

    CPC分类号： H02P6/20 ,  F02N11/04 ,  F02N11/0859 ,  F02N2200/041 ,  H02P1/46 ,  H02P21/34

    摘要： A method of starting a permanent magnet machine. A machine stator voltage in a stationary reference frame is sensed. An initial speed of a rotor of the machine is estimated based on the sensed voltage, and state variables of control algorithms are initialized based on the estimated initial speed. This method can provide smooth startup and/or restart at any speed.

    摘要翻译： 一种启动永磁机的方法。 感测到静止参考系中的机器定子电压。 基于感测到的电压来估计机器的转子的初始速度，并且基于估计的初始速度来初始化控制算法的状态变量。 该方法可以以任何速度提供平稳的启动和/或重新启动。

    FIELD WEAKENING MOTOR CONTROL SYSTEM AND METHOD
    8.
    发明申请
    FIELD WEAKENING MOTOR CONTROL SYSTEM AND METHOD 失效
    现场弱电机控制系统及方法

    公开(公告)号：US20060055363A1

    公开(公告)日：2006-03-16

    申请号：US10939553

    申请日：2004-09-13

    申请人： Nitinkumar Patel ,  Steven Schulz ,  Seung Sul ,  Bon-Ho Bae

    发明人： Nitinkumar Patel ,  Steven Schulz ,  Seung Sul ,  Bon-Ho Bae

    IPC分类号： H02P3/18

    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。

    Current regulation for a field weakening motor control system and method
    9.
    发明申请
    Current regulation for a field weakening motor control system and method 有权
    减弱电机控制系统和方法的电流调节

    公开(公告)号：US20050212471A1

    公开(公告)日：2005-09-29

    申请号：US10808082

    申请日：2004-03-24

    申请人： Nitinkumar Patel ,  Steven Schulz

    发明人： Nitinkumar Patel ,  Steven Schulz

    IPC分类号： H02P7/00 ,  H02P21/08

    CPC分类号： H02P21/08

    摘要： A control system and method for an electric machine includes a first calculation module that receives a modified torque command and a calculated stator flux command and that generates first and second current commands and first and second voltage commands. A voltage magnitude calculation module generates a voltage magnitude based the first and second voltage commands. A reference voltage calculator module generates a reference voltage based on a DC link voltage, an angular stator velocity and the first and second current commands. A flux weakening module generates the calculated flux command based on the angular stator velocity, the reference voltage and the voltage magnitude.

    摘要翻译： 一种用于电机的控制系统和方法包括：第一计算模块，其接收修改的转矩指令和计算的定子磁通指令，并产生第一和第二电流指令以及第一和第二电压指令。 电压幅度计算模块基于第一和第二电压命令产生电压幅度。 参考电压计算器模块基于DC链路电压，角定子速度和第一和第二电流命令产生参考电压。 磁通弱化模块基于角定子速度，参考电压和电压幅度产生计算的磁通指令。