The invention discloses an energy management method for a hydrogen fuel cell hybrid power system, which realizes frequency separation of power requirements of the power system through a self-adaptive improved low-pass filtering method, thereby achieving the purpose of effectively prolonging the residual service life of a hydrogen fuel cell. The adaptive improved low-pass filtering method is an improved frequency separation method, and optimal filtering parameters are determined according to statistical characteristics of a power system under different working conditions. And performing low-pass filtering on the power demand data of the power system to obtain low-frequency power which stably fluctuates near a power mean value, distributing the power to a hydrogen fuel cell, and distributing difference power to a lithium battery. The energy management method provided by the invention can effectively reduce the fluctuation of the output power of the hydrogen fuel cell in the working process on the premise of ensuring the dynamic property of the system, thereby prolonging the residual service life of the hydrogen fuel cell.

    本发明公开了一种氢燃料电池混合动力系统能量管理方法,通过一种自适应改进低通滤波方法实现对动力系统功率需求的频率分离,从而达到有效延长氢燃料电池剩余使用寿命的目的。所述自适应改进低通滤波方法,即一种改进的频率分离方法,根据动力系统在不同工况下的统计学特征来确定最优的滤波参数。对动力系统的功率需求数据进行低通滤波,得到在功率均值附近平稳波动的低频功率,并将这部分功率分配给氢燃料电池,差值功率分配给锂电池。本发明的能量管理方法能够在保证系统动力性的前提下,有效降低氢燃料电池在工作过程中输出功率的波动,从而延长其剩余使用寿命。


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    Title :

    Energy management method for hydrogen fuel cell hybrid power system


    Additional title:

    一种氢燃料电池混合动力系统能量管理方法


    Contributors:
    XU ZIQIANG (author) / ZHU HONGTAO (author) / DING CHENGUANG (author) / WU MENGQIANG (author) / LIANG HONGHAO (author)

    Publication date :

    2022-07-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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