Motor drive system and method capable of suppressing heat generation during low speed operation

    公开(公告)号:US11223317B2

    公开(公告)日:2022-01-11

    申请号:US16695571

    申请日:2019-11-26

    发明人: Tae Il Yoo

    摘要: A motor drive system capable of suppressing heat generation during a low speed operation may include: an inverter including a plurality of switching elements to convert direct current power to alternating current power having a plurality of phases; a motor driven with the alternating current power converted in the inverter; and a controller determines an operating point of the motor on the basis of a torque command of the motor and generates a d-axis current command and a q-axis current command corresponding to the operating point. In particular, when each of the switching elements is overheated, the controller changes the d-axis current command and the q-axis current command by changing the operating point to a different operating point corresponding to a torque of the same magnitude as the torque command.

    MOTOR PROVIDED WITH COOLING SYSTEM

    公开(公告)号:US20210067006A1

    公开(公告)日:2021-03-04

    申请号:US16921157

    申请日:2020-07-06

    IPC分类号: H02K9/193 H02K5/20

    摘要: A motor with a cooling system is provided. The motor includes a cooling system cooling a stator with coils wound on a core, in which the cooling system includes a plurality of spray pipes having a plurality of holes and spraying oil through the holes, the plurality of spray pipes is positioned between the stator and a housing of the motor, and the plurality of spray pipes includes pipes disposed at a center over the stator and at both sides spaced apart from each other in a circumferential direction of the stator from the center with predetermined gaps therebetween.

    TORQUE CONTROL APPARATUS AND METHOD AND MOTOR CONTROLLER
    8.
    发明申请
    TORQUE CONTROL APPARATUS AND METHOD AND MOTOR CONTROLLER 有权
    扭矩控制装置和方法与电机控制器

    公开(公告)号:US20160114801A1

    公开(公告)日:2016-04-28

    申请号:US14870315

    申请日:2015-09-30

    IPC分类号: B60W30/18

    摘要: A torque control apparatus includes: a flux linkage estimator estimating a variation of flux linkage based on a difference between a current temperature of a motor measured by a temperature sensor and a predefined reference temperature; a torque compensation value calculator calculating a torque compensation value corresponding to the current temperature of the motor based on the estimated variation of flux linkage; and a torque compensator compensating for an error of required torque of a torque command by applying the calculated torque compensation value in response to a change in temperature of the motor and outputting a final torque command including the error-compensated required torque to a current map of a motor controller.

    摘要翻译: 扭矩控制装置包括:磁链估计器,其基于由温度传感器测量的电动机的当前温度与预定的参考温度之间的差来估计磁链的变化; 扭矩补偿值计算器,基于所估计的磁链的变化量,计算与所述电动机的当前温度对应的转矩补偿值; 以及扭矩补偿器,其通过根据电动机的温度变化应用所计算的转矩补偿值来补偿转矩指令的所需转矩的误差,并将包括误差补偿的所需转矩的最终转矩指令输出到 电机控制器。

    Torque control apparatus and method and motor controller
    9.
    发明授权
    Torque control apparatus and method and motor controller 有权
    扭矩控制装置及方法及电机控制器

    公开(公告)号:US09469302B2

    公开(公告)日:2016-10-18

    申请号:US14870315

    申请日:2015-09-30

    IPC分类号: B60W30/18

    摘要: A torque control apparatus includes: a flux linkage estimator estimating a variation of flux linkage based on a difference between a current temperature of a motor measured by a temperature sensor and a predefined reference temperature; a torque compensation value calculator calculating a torque compensation value corresponding to the current temperature of the motor based on the estimated variation of flux linkage; and a torque compensator compensating for an error of required torque of a torque command by applying the calculated torque compensation value in response to a change in temperature of the motor and outputting a final torque command including the error-compensated required torque to a current map of a motor controller.

    摘要翻译: 扭矩控制装置包括:磁链估计器,其基于由温度传感器测量的电动机的当前温度与预定的参考温度之间的差来估计磁链的变化; 扭矩补偿值计算器,基于所估计的磁链的变化量,计算与所述电动机的当前温度对应的转矩补偿值; 以及扭矩补偿器,其通过根据电动机的温度变化应用所计算的转矩补偿值来补偿转矩指令的所需转矩的误差,并将包括误差补偿的所需转矩的最终转矩指令输出到 电机控制器。

    APPARATUS AND METHOD FOR COMPENSATING FOR POSITION ERROR OF RESOLVER
    10.
    发明申请
    APPARATUS AND METHOD FOR COMPENSATING FOR POSITION ERROR OF RESOLVER 审中-公开
    用于补偿解决方案位置错误的装置和方法

    公开(公告)号:US20150362347A1

    公开(公告)日:2015-12-17

    申请号:US14570294

    申请日:2014-12-15

    IPC分类号: G01D18/00 G01D5/12

    CPC分类号: G01D5/24495 G01D5/20

    摘要: An apparatus and method are provided for compensating for a position error of a resolver that compensates for positions in the overall speed range using resolver position error measured at a specific speed by providing an angle tracking observer (ATO) for calculating angle information. The ATO compensates for the position errors in the overall speed range based on the position errors measured at the specific speed, to an inside of a resolver-digital converter. The method includes digitalizing detected position information of the motor rotor and receiving the digitalized position information from a resolver-digital converter to measure the position error. An electrical angular velocity of the position error is determined and the position error at the electrical angular velocity 0 is calculated and stored. The position error at a current electrical angular velocity is converted into and compensated for using the calculated position error based on the current electrical angular velocity.

    摘要翻译: 提供了一种装置和方法,用于通过提供用于计算角度信息的角度跟踪观察器(ATO)来补偿使用通过以特定速度测量的解算器位置误差补偿总体速度范围中的位置的解算器的位置误差。 ATO根据以特定速度测量的位置误差到解算数字转换器的内部来补偿总体速度范围内的位置误差。 该方法包括数字化电动机转子的检测位置信息,并从解算数字转换器接收数字化位置信息以测量位置误差。 确定位置误差的电角速度,计算并存储电角速度为0的位置误差。 基于当前电角速度,将当前电角速度下的位置误差转换并使用计算出的位置误差进行补偿。