The invention provides an electric driving system control method and system, and the method comprises the steps: calculating a driving parameter corresponding to a driving motor in a current vehicle according to a driving instruction, and outputting a current instruction corresponding to the driving motor through a PI controller; the corresponding expected voltage vector amplitude is calculated according to the driving parameters and the current instruction, and the maximum voltage vector amplitude capable of being used for driving a motor is calculated according to the real-time output voltage of a driving battery in the vehicle and the real-time on-off state of an inverter; judging whether the expected voltage vector amplitude is greater than the maximum voltage vector amplitude or not; if yes, it is judged that the vehicle enters an overmodulation mode, and adaptive adjustment is conducted on the expected voltage vector amplitude through a first modulation strategy contained in the overmodulation mode, so that an inverter in the vehicle outputs the expected voltage vector amplitude obtained after adaptive adjustment. The working requirement of the driving motor can be met in real time, and the use experience of a user is improved.
本发明提供了一种电驱动系统控制方法及系统,该方法包括:根据驱动指令计算出与当前车辆内部的驱动电机对应的驱动参数,并通过PI控制器输出与驱动电机对应的电流指令;根据驱动参数以及电流指令计算出对应的期望电压矢量幅值,并根据车辆内部的驱动电池的实时输出电压以及逆变器的实时开关状态计算出能够用于驱动电机的最大电压矢量幅值;判断期望电压矢量幅值是否大于最大电压矢量幅值;若是,则判定进入过调制模式,并通过过调制模式中包含的第一调制策略对期望电压矢量幅值进行自适应调整,以使车辆内部的逆变器输出自适应调整后的期望电压矢量幅值。本发明能够实时满足驱动电机的工作需求,提升了用户的使用体验。
Electric drive system control method and system
一种电驱动系统控制方法及系统
2023-08-15
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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