MOTOR PHASE WINDING FAULT DETECTION METHOD AND APPARATUS
    81.
    发明申请
    MOTOR PHASE WINDING FAULT DETECTION METHOD AND APPARATUS 有权
    电机相绕组故障检测方法及装置

    公开(公告)号:US20110187304A1

    公开(公告)日:2011-08-04

    申请号:US12698221

    申请日:2010-02-02

    IPC分类号: G01R31/06

    CPC分类号: G01R31/343

    摘要: A method of detecting a phase winding fault in a multi-phase electric machine is executable via a motor controller, and includes measuring feedback signals of the machine, including each phase current, and generating reference phase voltages for each phase. The method includes calculating a predetermined voltage value using the feedback signals and reference phase voltages, and comparing the voltage value to a corresponding threshold to determine the fault. A control action is executed when the voltage value exceeds the corresponding threshold. The voltage value is one or more of: a ratio of a normalized negative sequence voltage to a modulation index, an RMS voltage for each phase, and total harmonic distortion of each phase current. An apparatus detects the fault, and includes a motor controller and an algorithm as set forth above. The apparatus may include a voltage inverter for generating a multi-phase alternating current output for powering the machine.

    摘要翻译: 检测多相电机中的相绕组故障的方法可通过马达控制器执行,并且包括测量机器的反馈信号,包括每个相电流,并产生每相的参考相电压。 该方法包括使用反馈信号和参考相电压来计算预定电压值,并将电压值与相应的阈值进行比较以确定故障。 当电压值超过相应的阈值时,执行控制动作。 电压值是以下中的一个或多个:归一化负序电压与调制指数的比率,每相的RMS电压以及每个相电流的总谐波失真。 一种装置检测故障,并包括如上所述的马达控制器和算法。 该装置可以包括电压逆变器,用于产生用于为机器供电的多相交流输出。

    POWER INVERTER MODULE THERMAL MANAGEMENT
    84.
    发明申请
    POWER INVERTER MODULE THERMAL MANAGEMENT 有权
    电力逆变器模块热管理

    公开(公告)号:US20090072770A1

    公开(公告)日:2009-03-19

    申请号:US11853862

    申请日:2007-09-12

    摘要: According to an example embodiment, a method is provided for limiting an operational temperature of a motor. The method includes generating a maximum allowable current I*S(max) for a motor based on a temperature difference between a temperature reference T* of a power inverter module and a semiconductor device temperature T of the power inverter module. The method further includes generating a maximum allowable torque T*e(max) based on the maximum allowable current I*S(max) and a maximum allowable flux Ψ*S(max), and using the maximum allowable torque T*e(max) to limit the torque command T*e in order to suppress the semiconductor device temperature T to below the temperature reference T*.

    摘要翻译: 根据示例性实施例,提供了一种用于限制电动机的工作温度的方法。 该方法包括基于电力逆变器模块的温度参考值T *和功率逆变器模块的半导体器件温度T之间的温差产生电动机的最大允许电流I * S(max)。 该方法还包括基于最大允许电流I * S(max)和最大允许通量Psi * S(max)产生最大允许转矩T * e(max),并使用最大允许转矩T * e )以限制转矩指令T * e,以便将半导体器件温度T抑制到低于温度参考值T *。

    PWM method for cycloconverter
    85.
    发明授权
    PWM method for cycloconverter 失效
    循环换流器的PWM方法

    公开(公告)号:US07483282B2

    公开(公告)日:2009-01-27

    申请号:US11468001

    申请日:2006-08-29

    IPC分类号: H02M7/48 H02M5/00

    CPC分类号: H02M5/297 H02M7/4807

    摘要: A method of using a cycloconverter switches a first switch of the first topology type to an on state after a magnitude of a current through an output inductor becomes less than a predetermined current threshold, and switches a second switch of the first topology type to an off state a first time after switching the first switch to the on state. The cycloconverter includes nodes on a first port, nodes on a second port, a switch pair coupled between a first node of the first port and a first node of the second port, a switch pair coupled between a second node of the first port and a first node of the second port, a switch pair coupled between a first node of the first port and a second node of the second port, and a switch pair coupled between a second node of the first port and a second node of the second port. Each switch pair includes a switch of each topology type.

    摘要翻译: 在通过输出电感器的电流的大小变得小于预定电流阈值之后,使用循环换流器的方法将第一拓扑类型的第一开关切换到导通状态,并且将第一拓扑类型的第二开关切换到关闭 在将第一开关切换到接通状态之后,首先进行状态。 循环变换器包括第一端口上的节点,第二端口上的节点,耦合在第一端口的第一节点和第二端口的第一节点之间的交换机对,耦合在第一端口的第二节点和 第二端口的第一节点,耦合在第一端口的第一节点和第二端口的第二节点之间的开关对,以及耦合在第一端口的第二节点和第二端口的第二节点之间的开关对。 每个交换机对包括每种拓扑类型的交换机。

    REDUCTION OF SUBHARMONIC OSCILLATION AT HIGH FREQUENCY OPERATION OF A POWER INVERTER
    86.
    发明申请
    REDUCTION OF SUBHARMONIC OSCILLATION AT HIGH FREQUENCY OPERATION OF A POWER INVERTER 有权
    降低功率变换器高频运行时的次谐波振荡

    公开(公告)号:US20080197800A1

    公开(公告)日:2008-08-21

    申请号:US11676527

    申请日:2007-02-20

    IPC分类号: H02P27/04

    摘要: A control architecture for an electrical inverter includes a synchronous frame current regulator and a stationary frame current regulator. The stationary frame current regulator receives input currents that represent filtered versions of stationary frame currents that correspond to the inverter output currents. The control architecture employs an adaptive filter module that filters the stationary frame currents to remove the fundamental motor frequency component (and its related harmonics), thus extracting any low frequency harmonic components. The stationary frame current regulator processes the low frequency components, while the synchronous frame current regulator processes the fundamental frequency component, resulting in suppression of low frequency oscillations in the inverter output.

    摘要翻译: 用于电力逆变器的控制架构包括同步电流调节器和静止电流调节器。 静态框架电流调节器接收表示对应于逆变器输出电流的静态框电流的滤波版本的输入电流。 控制架构采用自适应滤波器模块,对固定电流进行滤波,去除基波电机频率分量(及其相关谐波),从而提取任何低频谐波分量。 静态电流调节器处理低频分量,而同步电流调节器处理基频分量,从而抑制逆变器输出中的低频振荡。

    Decoupling a harmonic signal from a signal path
    90.
    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

    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。