控制双模变速器车辆的电驱动器功率逆变器的方法和系统

Method and system for controlling a power inverter in electric drives of vehicles with two-mode transmissions

Abstract

本发明提供了控制使用双模变速器的汽车的功率逆变器的方法和系统。各个实施例通过以下步骤控制功率逆变器:响应电动机的低于第一扭矩水平的命令扭矩,控制功率逆变器将功率逆变器的切换频率设定在第一设定频率;并且,响应电动机的在第一扭矩水平和第二扭矩水平之间的命令扭矩,控制功率逆变器根据电动机的命令扭矩的函数确定功率逆变器的切换频率,同时将切换频率保持在动态频率极限以上。此方法降低了在高的命令扭矩时逆变器中的切换频率,同时保持切换频率在动态频率极限以上提供了对电机的有效控制。
Methods and systems for controlling a power inverter in automobiles utilizing two-mode transmissions are provided. The various embodiments control the power inverter by, responsive to a commanded torque of the electric motor being below a first torque level, controlling the power inverter to set a switching frequency of the power inverter at a first set frequency; and, responsive to the commanded torque of the electric motor being between the first torque level and a second torque level, controlling the power inverter to determine the switching frequency of the power inverter as a function of the commanded torque of the electric motor while maintaining the switching frequency above a dynamic frequency limit. The method reduces switching frequencies in the inverter at high commanded torques, while maintaining the switching frequencies above dynamic frequency limit that provides effective control over the motor.

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Cited By (4)

    Publication numberPublication dateAssigneeTitle
    CN-101931365-ADecember 29, 2010通用汽车环球科技运作公司Automotive power electronics with wide band gap power transistors
    CN-102442222-AMay 09, 2012通用汽车环球科技运作有限责任公司Enhanced stability control for electric powertrain
    CN-104044581-ASeptember 17, 2014通用汽车环球科技运作有限责任公司Inverter control method and vehicle having same
    CN-104044581-BApril 12, 2017通用汽车环球科技运作有限责任公司逆变器控制方法和具有其的车辆