LINEARITY FOR FIELD WEAKENING IN AN INTERIOR PERMANENT MAGNET MACHINE
    2.
    发明申请
    LINEARITY FOR FIELD WEAKENING IN AN INTERIOR PERMANENT MAGNET MACHINE 有权
    在内置永磁电机中进行场疲劳的线性度

    公开(公告)号:US20100231149A1

    公开(公告)日:2010-09-16

    申请号:US12786104

    申请日:2010-05-24

    IPC分类号: H02P21/00

    摘要: Systems and methods are disclosed to provide torque linearity in the field-weakening region for an electric (e.g., IPM) machine. The systems and methods implement a field weakening and a torque linearity control loop for linearizing torque generated by an electric machine. First and second voltage commands are used at the field weakening loop to generate a first adjusting current command. The first adjusting current command is then provided to the torque linearity control loop, where it is multiplied by a gain to generate an output current command, which can then be limited to generate a second adjusting current command. The second adjusting current command can then be added to a current command to generate an adjusted current command. The first adjusting current command can also be added to another current command to generate another adjusted current command. The adjusted current commands and feedback currents are then used at a synchronous current regulator to generate new first and second voltage commands. As a result, torque linearity is maintained when the electric machine operates in the field weakening region.

    摘要翻译: 公开了系统和方法以在电动(例如,IPM)机器的弱磁区域中提供扭矩线性度。 该系统和方法实现了减弱电磁场和扭矩线性控制回路,用于线性化电机产生的转矩。 在弱磁环路处使用第一和第二电压指令来产生第一调整电流指令。 然后将第一调整电流指令提供给转矩线性控制回路,在该转矩线性控制回路中乘以增益以产生输出电流指令,然后可以限制该指令以产生第二调整电流指令。 然后可以将第二调整电流命令添加到当前命令以产生经调整的电流命令。 第一个调整电流命令也可以添加到另一个当前命令,以生成另一个调整的电流命令。 然后在同步电流调节器上使用调整后的电流指令和反馈电流来产生新的第一和第二电压指令。 结果,当电机在弱磁区域中运行时,扭矩线性度得以保持。

    METHODS AND SYSTEMS FOR INDUCTION MOTOR CONTROL
    3.
    发明申请
    METHODS AND SYSTEMS FOR INDUCTION MOTOR CONTROL 有权
    电感电机控制方法与系统

    公开(公告)号:US20110285342A1

    公开(公告)日:2011-11-24

    申请号:US12784873

    申请日:2010-05-21

    IPC分类号: H02P23/14

    CPC分类号: H02P21/16

    摘要: A method is provided for controlling an induction motor having a rotor. The method includes receiving a torque command; comparing the torque command to a threshold torque value; generating, with a first estimation module, a first estimated rotor resistance when the torque command is less than or equal to the threshold torque value; generating, with a second estimation module, a second estimated rotor resistance when the torque command is greater than the threshold torque value; and generating control signals for the induction motor based on the first estimated rotor resistance or the second estimated rotor resistance.

    摘要翻译: 提供一种用于控制具有转子的感应电动机的方法。 该方法包括:接收扭矩指令; 将所述转矩指令与阈值转矩值进行比较; 当所述转矩指令小于或等于所述阈值转矩值时,利用第一估计模块产生第一估计转子电阻; 当转矩指令大于阈值转矩值时,利用第二估计模块产生第二估计转子电阻; 以及基于所述第一估计转子电阻或所述第二估计转子电阻产生所述感应电动机的控制信号。

    ELECTRIC MOTOR STATOR WINDING TEMPERATURE ESTIMATION
    4.
    发明申请
    ELECTRIC MOTOR STATOR WINDING TEMPERATURE ESTIMATION 有权
    电动机定子绕组温度估计

    公开(公告)号:US20090189561A1

    公开(公告)日:2009-07-30

    申请号:US12019395

    申请日:2008-01-24

    IPC分类号: H02P23/14 H02K9/00 H02K11/00

    CPC分类号: H02H7/0852

    摘要: A temperature estimation controller and methods are provided for controlling a torque command to prevent overheating of one or more of a plurality of phases of a permanent magnet motor. The temperature estimation controller includes a low speed temperature estimation module, a transition module and a temperature dependent torque command derater block. The low speed temperature estimation module determines a stator temperature of each of a plurality of phases of the permanent magnet motor in response to first thermal impedances measured for each of the plurality of phases with respect to a thermal neutral. The transition module is coupled to the low speed temperature estimation module and outputs the stator temperature of each of a plurality of phases of the permanent magnet motor as determined by the low speed temperature estimation module when a detected speed of the permanent magnet motor is less than a first predetermined speed. The temperature dependent torque command derater block is coupled to the transition module and derates the torque command in response to the stator temperature of one or more of the plurality of phases.

    摘要翻译: 提供了一种用于控制转矩指令以防止永磁电动机的多相中的一个或多个相的过热的温度估计控制器和方法。 温度估计控制器包括低速温度估计模块,过渡模块和与温度相关的转矩指令减排模块。 低速温度估计模块响应于相对于热中性点对多个相中的每一个测量的第一热阻而确定永磁电动机的多相的每个相的定子温度。 当所述永磁电动机的检测速度小于所述低速温度估计模块时,所述过渡模块耦合到所述低速温度估计模块,并且输出由所述低速温度估计模块确定的所述永磁电动机的多个相中的每一个的定子温度。 第一预定速度。 与温度相关的转矩指令转换器模块耦合到转换模块,并响应于多个相位中的一个或多个的定子温度降低转矩指令。

    METHOD AND SYSTEM FOR SENSORLESS CONTROL OF AN ELECTRIC MOTOR
    5.
    发明申请
    METHOD AND SYSTEM FOR SENSORLESS CONTROL OF AN ELECTRIC MOTOR 有权
    电动机无传感控制方法与系统

    公开(公告)号:US20130175955A1

    公开(公告)日:2013-07-11

    申请号:US13344241

    申请日:2012-01-05

    IPC分类号: H02P6/18

    CPC分类号: H02P21/14 H02P21/13 H02P27/06

    摘要: Methods and systems for controlling an electric motor are provided. An estimated rotor flux angular position error is generated based on estimated back electromotive force (EMF) values, and based on the estimated rotor flux angular position error, an estimated rotor flux angular position, an estimated electrical synchronous frequency and/or an estimated rotor frequency can be generated.

    摘要翻译: 提供了用于控制电动机的方法和系统。 基于估计的反向电动势(EMF)值产生估计的转子磁通角位置误差,并且基于估计的转子磁通角位置误差,估计的转子磁通角位置,估计的电同步频率和/或估计转子频率 可以生成。

    METHOD AND SYSTEM FOR LIMITING THE OPERATING TEMPERATURE OF AN ELECTRIC MOTOR
    6.
    发明申请
    METHOD AND SYSTEM FOR LIMITING THE OPERATING TEMPERATURE OF AN ELECTRIC MOTOR 有权
    限制电动机运行温度的方法和系统

    公开(公告)号:US20090066283A1

    公开(公告)日:2009-03-12

    申请号:US11850983

    申请日:2007-09-06

    IPC分类号: H02H7/08

    CPC分类号: H02P21/14 H02P29/64

    摘要: A method and system for limiting the operating temperature of an electric motor is provided. A maximum operational temperature of the motor is determined. A current operational temperature within the motor is sensed. A maximum allowable power dissipation of the motor is calculated based at least in part on the maximum operational temperature and the current operational temperature of the motor. A torque command for the motor is generated based on the maximum allowable power dissipation.

    摘要翻译: 提供一种用于限制电动机的工作温度的方法和系统。 确定电机的最大工作温度。 感测到电机内的当前工作温度。 至少部分地基于最大工作温度和电动机的当前工作温度来计算电动机的最大允许功率损耗。 基于最大允许功率消耗产生电机的转矩指令。

    INITIAL POLARITY DETECTION FOR PERMANENT MAGNET MOTOR DRIVES
    7.
    发明申请
    INITIAL POLARITY DETECTION FOR PERMANENT MAGNET MOTOR DRIVES 有权
    永磁电机驱动的初步极性检测

    公开(公告)号:US20100171455A1

    公开(公告)日:2010-07-08

    申请号:US12348684

    申请日:2009-01-05

    IPC分类号: H02P1/46

    摘要: Methods and apparatus are provided for aligning a control reference axis with a magnetic north of a permanent magnet motor. The method includes the steps of injecting a predetermined stator current on an estimated reference axis of the permanent magnet motor and introducing predetermined error on the estimated reference axis. The method further includes the steps of determining if a speed of the permanent magnet motor is greater than a predetermined threshold speed and setting the control reference axis to 180° added to the estimated reference axis if the speed of the permanent magnet motor is greater than the predetermined threshold speed or setting the control reference axis to the estimated reference axis if the speed of the permanent magnet motor is less than or equal to the predetermined threshold speed.

    摘要翻译: 提供了用于使控制参考轴与永磁电动机的磁北对准的方法和装置。 该方法包括以下步骤:将预定定子电流注入到永磁电动机的估计参考轴上,并将预定误差引入估计的参考轴。 该方法还包括以下步骤:如果永磁电动机的速度大于预定阈值速度,则将该控制基准轴设定为估计参考轴的180°,如果永磁电动机的速度大于 如果永磁电动机的速度小于或等于预定阈值速度,则将控制参考轴设置为估计的参考轴。

    METHOD AND SYSTEM FOR SENSORLESS CONTROL OF AN ELECTRIC MOTOR
    8.
    发明申请
    METHOD AND SYSTEM FOR SENSORLESS CONTROL OF AN ELECTRIC MOTOR 有权
    电动机无传感控制方法与系统

    公开(公告)号:US20090140676A1

    公开(公告)日:2009-06-04

    申请号:US11947501

    申请日:2007-11-29

    摘要: Methods and systems for controlling an electric motor are provided. A signal comprising at least first and second cycles is provided to the electric motor. A first flux value for the electric motor associated with the first cycle of the signal is calculated. A second flux value for the electric motor associated with the second cycle of the signal is calculated based on the first flux value.

    摘要翻译: 提供了用于控制电动机的方法和系统。 包括至少第一和第二循环的信号被提供给电动机。 计算与信号的第一周期相关的电动机的第一通量值。 基于第一通量值计算与信号的第二周期相关联的电动机的第二通量值。

    ELECTRIC MOTOR STATOR WINDING TEMPERATURE ESTIMATION
    9.
    发明申请
    ELECTRIC MOTOR STATOR WINDING TEMPERATURE ESTIMATION 有权
    电动机定子绕组温度估计

    公开(公告)号:US20110050141A1

    公开(公告)日:2011-03-03

    申请号:US12568002

    申请日:2009-09-28

    IPC分类号: H02P7/00

    摘要: A temperature estimation controller and methods are provided for estimating stator winding temperature over a full range of motor operating speeds. In one implementation, the angular velocity of a motor is determined along with a total power loss for each phase of said motor. The total power loss in each phase comprises stator winding power loss and a core power loss. Stator winding temperatures for each phase of motor can then estimated based on the total power loss in that phase, and a combined thermal impedance for that phase. The combined thermal impedance comprises a first thermal impedance between the stator winding and the stator core, and a second thermal impedance between the stator core and the motor coolant.

    摘要翻译: 提供了一种温度估计控制器和方法,用于在整个电机运行速度范围内估计定子绕组温度。 在一个实施方式中,确定电动机的角速度以及所述电动机的每相的总功率损耗。 每相中的总功率损耗包括定子绕组功率损耗和铁芯功率损耗。 然后可以根据该阶段的总功率损耗和该阶段的组合热阻抗来估计电机各相的定子绕组温度。 组合的热阻抗包括定子绕组和定子铁心之间的第一热阻抗,以及定子铁芯和电动机冷却剂之间的第二热阻抗。