The invention discloses an electric vehicle charging and discharging system and a control method, and belongs to the technical field of electrical control, and the system comprises a DC power generation module, a DC bus, a plurality of groups of electric vehicle storage batteries, an energy buffer module, an AC load module, and a control module. The method comprises the following steps: S1, judging whether electric energy consumed by an alternating-current load module and a storage battery can be simultaneously met or not; S2, judging whether surplus electric energy exists or not; S3, transmitting the redundant electric energy to an alternating current power grid; S4, judging whether the alternating-current power grid is available or not; S5, judging whether electric energy consumed by multiple groups of electric vehicle storage batteries is met or not; S6, judging whether the electric energy consumed by the alternating current load module can be met or not. The method has the beneficial effects that the loss caused by multiple times of energy conversion in the direct-current microgrid is reduced, and the transmission efficiency of the whole system is improved.

    本发明公开了一种电动汽车充放电系统及控制方法,属于电气控制技术领域,系统包括:直流发电模块、直流母线、多组电动汽车蓄电池、能量缓冲模块、交流负载模块、控制模块;方法包括:步骤S1,是否能够同时满足交流负载模块和蓄电池消耗的电能;步骤S2,是否还存在多余电能;步骤S3,将多余电能传输至交流电网;步骤S4,判断交流电网是否可用,步骤S5,是否满足多组电动汽车蓄电池所消耗电能;步骤S6,是否能够满足交流负载模块所消耗的电能;有益效果是:降低了直流微电网中因多次能量转换带来的损耗,提高了整体系统的传输效率。


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    Titel :

    Electric vehicle charging and discharging system and control method


    Weitere Titelangaben:

    一种电动汽车充放电系统及控制方法


    Beteiligte:
    CHEN YING (Autor:in) / ZHANG XIA (Autor:in) / SHI YUAN (Autor:in)

    Erscheinungsdatum :

    2020-06-05


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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




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