The invention belongs to the field of fuel cell intelligent humidity control, and provides a fuel cell variable working condition humidity control method and system based on a fuzzy theory. The method comprises the following steps: determining the current proton exchange membrane water content and the optimal membrane water content of the fuel cell under the next target working condition, and calculating the difference between the two to determine the moisture increasing/decreasing amount; a fuzzy membership function is formed according to the urgency degree and the humidity increasing/decreasing amount of the driver changing the working condition in combination with the loads of the current working condition and the next working condition, and a fuzzy control rule base of the urgency degree, the load change and the humidity change of the driver changing the working condition is constructed; real-time operation data are collected, and the optimal moisture increasing/decreasing amount is obtained through the fuzzy control rule base; and the optimal humidifying/dehumidifying amount is converted into output PWM waves to control the voltage of a motor of the humidifier, so that the rotating speed of the motor is controlled to achieve the purpose of controlling the humidifying/dehumidifying amount.

    本发明属于燃料电池智能湿度控制领域,提供了一种基于模糊理论的燃料电池变工况湿度控制方法及系统。该方法包括,确定当前质子交换膜水含量和下一目标工况燃料电池的最佳膜水含量,计算两者差值确定增/减湿量;根据驾驶员改变工况的急迫程度和增/减湿量,结合当前工况和下一工况的负荷,形成模糊隶属度函数,构建驾驶员改变工况的急迫程度、负荷变化与湿度变化的模糊控制规则库;采集实时运行数据,通过模糊控制规则库得到最佳增/减湿量;将最佳增/减湿量转化为输出PWM波控制增湿器电机电压,以此控制电机转速达到控制增/减湿量的目的。


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    Titel :

    Fuel cell variable working condition humidity control method and system based on fuzzy theory


    Weitere Titelangaben:

    一种基于模糊理论的燃料电池变工况湿度控制方法及系统


    Beteiligte:
    YAN WEI (Autor:in) / ZHANG QI (Autor:in) / LI GUOXIANG (Autor:in) / LYU YAWEI (Autor:in) / WAN QINGJIANG (Autor:in) / KONG PING (Autor:in)

    Erscheinungsdatum :

    2023-08-01


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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