The invention relates to a three-phase power balance adjusting method and a multi-gun alternating-current charging pile, and belongs to the field of electric automobile charging piles. The charging pile comprises a three-phase main inlet wire and a plurality of charging guns connected with the three-phase main inlet wire in parallel, a three-phase electric energy meter is arranged on the main inlet wire, and phase-change switches are arranged between the charging guns and the main inlet wire; the phase-change switch is used for selectively connecting one of the three phases to supply power to the charging gun; according to the charging pile, phase lines connected with the charging gun are actively switched through the phase-change switch so as to change three-phase imbalance; the method comprises the following steps: if the three-phase unbalance degree on a main line exceeds a first set threshold value, adjusting the output power of a charging branch connected to the main line; if the three-phase unbalance degree on the main line exceeds a second set threshold value, controlling a charging branch connected to the main line, and transferring the load of the high-load phase line to the low-load phase line; the first set threshold value is smaller than the second set threshold value, and intelligent adjustment of the three-phase unbalance degree is achieved through the method.

    本发明涉及一种三相功率平衡调节方法及多枪交流充电桩,属于电动汽车充电桩领域,本发明设计的充电桩包括三相主进线,和若干个与之并联连接的充电枪,主进线上有三相电能表,充电枪与主进线之间设置有换相开关,换相开关用于选择连接三相中的一相对充电枪供电;该充电桩通过换相开关主动切换充电枪所连相线以改变三相不平衡;本发明方法如下,若主线路上三相不平衡度超过第一设定阈值,调节主线路上连接的充电支路的输出功率;若主线路上三相不平衡度超过第二设定阈值,则控制主线路上连接的充电支路,将高负荷相线的负载转移到低负荷相线;第一设定阈值小于第二设定阈值,通过该方法实现对三相不平衡度的智能调节。


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    Titel :

    Three-phase power balance adjusting method and multi-gun alternating current charging pile


    Weitere Titelangaben:

    一种三相功率平衡调节方法及多枪交流充电桩


    Beteiligte:
    WANG BING (Autor:in) / FANG YUYING (Autor:in) / YANG XIA (Autor:in) / ZHANG YAPING (Autor:in) / FANG KAILONG (Autor:in) / WU DENG (Autor:in) / CHEN JINYING (Autor:in) / CHEN WENDA (Autor:in) / TIAN ZHENQING (Autor:in) / CAO YUNLONG (Autor:in)

    Erscheinungsdatum :

    2023-09-12


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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