The invention discloses a range extender operating point switching control method based on power prediction, and relates to the technical field of electric automobiles, and the method comprises the following steps: obtaining the rotating speed and torque corresponding to a target power operating point of a range extender according to the driving state of a whole automobile and a formulated APU control strategy; calculating a difference value between the target rotating speed and the actual rotating speed of the range extender; if the absolute value of the difference value is smaller than the set rotating speed, using a PID parameter 1 mode for control and adjustment; and if the absolute value of the difference value is larger than the set rotating speed, using a PID parameter 2 control mode is used for control and adjustment so that the torque and the rotating speed of the range extender are converged to target values. Aiming at an extended-range electric vehicle for a multi-point power-battery pack power following control strategy, overshoot and fluctuation phenomena of a working point of the range extender in a large-amplitude switching process are improved to a certain extent, noise and vibration are improved, and the reliability of core components such as an engine is improved.

    本发明公开了一种基于功率预测的增程器运行点切换控制方法,涉及电动汽车技术领域,包括以下步骤:根据整车行驶状态和制定的APU控制策略,获取增程器目标功率工作点对应的的转速和扭矩;计算增程器目标转速和实际转速之间的差值;如果差值的绝对值小于设定转速,则使用PID参数1模式进行控制调节;如果差值的绝对值大于设定转速,则使用PID参数2控制模式进行控制调节,使增程器的扭矩和转速均收敛至目标值。本发明通过针对多点功率‑电池包功率跟随控制策略的增程式电动汽车,通过基于目标功率预测的自适应PID控制,实现一定程度上改善增程器工作点在大幅度切换过程中的超调和波动现象,改善噪音和振动,增加发动机等核心部件的可靠性。


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    Title :

    Range extender operating point switching control method based on power prediction


    Additional title:

    一种基于功率预测的增程器运行点切换控制方法


    Contributors:
    DENG JIANMING (author) / ZOU FAMING (author) / YU QIN (author) / GONG XUNFEI (author) / LUO FENG (author)

    Publication date :

    2020-12-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



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