The invention discloses an electric vehicle and power grid V2G bidirectional power flow control method and system, and under the condition that the power supply quantity of a power grid exceeds the current required electric quantity, the power supply quantity of the power grid has an excessive part. The selection end of the bidirectional switch is controlled to be communicated with the first contact, so that the alternating current of the power grid is input into the energy storage device to temporarily store the electric quantity after passing through the AC/DC converter and the second DC/DCconverter. When the power supply quantity of the power grid is lower than the current required electric quantity, the power supply quantity of the power grid has a gap part, and if the electric vehicle is charged, the selection end of the two-way switch can be controlled to be connected with the second contact, so that the alternating current of the power grid passes through the second DC/DC converter and the first DC/DC converter, and then the electric vehicle is charged through the quick charging gun. Therefore, the influence of the charging load of the electric vehicle on the safety and stability of the power grid when a large number of electric vehicles needing to be charged are connected into the power distribution network is relieved.

    本申请公开了一种电动汽车与电网V2G双向功率流动控制方法和系统,电网供应电量超过当前的需求电量的情况下,电网供应量存在有过剩部分。控制双向开关的选择端与第一触点连通,使得电网交流电通过AC/DC变化器和第二DC/DC变换器后,输入能量存储器临时存储电量。待电网供应电量低于当前的需求电量的情况下,电网供应量存在有缺口部分,如果有电动汽车前来充电,可以控制双向开关的选择端与第二触点连通,使得电网交流电通过第二DC/DC变换器和第一DC/DC变换器后,通过快充充电枪为电动汽车进行充电。如此缓解大量需要充电的电动汽车接入配电网中,电动汽车充电负荷对电网的安全与稳定产生的影响。


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    Title :

    Electric vehicle and power grid V2G bidirectional power flow control system and method


    Additional title:

    一种电动汽车与电网V2G双向功率流动控制系统和方法


    Contributors:
    LIU ZHIBIN (author) / KANG HUIFENG (author) / ZHANG YIXIANG (author)

    Publication date :

    2021-01-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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