The invention provides an electric vehicle charging station with multiple alternating current power supply ports and multiple direct current buses, and belongs to the field of electric vehicle charging stations. The electric vehicle charging station is provided with a plurality of alternating-current power supply input ports, each alternating-current power supply is connected to an industrial frequency transformer, the secondary side of each transformer can be provided with one or more windings, each winding is connected to a converter, the direct-current side of each converter generates a direct-current bus voltage, and the voltages of a plurality of direct-current buses can be the same or different. When the voltages of the direct-current buses of the plurality of converters are the same, the plurality of direct-current buses can be connected in parallel or in cascade; and when the DC bus voltages of the plurality of converters are different, the plurality of DC buses are only cascaded. According to the invention, simultaneous energy taking of multiple AC power supply ports or energy exchange among the ports can be realized, when a certain AC power supply or a corresponding converter cannot work due to an abnormal fault, the remaining AC ports can still work, and the power distribution flexibility and redundancy of the charging station are improved.
本发明提供一种多交流电源端口多直流母线的电动汽车充电站,属于电动汽车充电站领域。本发明具有多个交流电源输入端口,每个交流电源接入一个工频变压器,每个变压器的副边可以有一个或者多个绕组,每个绕组接入一个变流器,每个变流器的直流侧生成一个直流母线电压,多个直流母线的电压可以相同也可以不同。当多个变流器的直流母线电压相同时,多个直流母线可以并联也可以级联;当多个变流器的直流母线电压不同时多个直流母线只进行级联。本发明可以实现多个交流电源端口同时取能或端口之间进行能量交换,当某个交流电源或其对应变流器异常故障无法工作时,剩余的交流端口仍可以继续工作,提高了充电站配电灵活性和冗余度。
Electric vehicle charging station with multiple alternating current power supply ports and multiple direct current buses
多交流电源端口多直流母线的电动汽车充电站
2021-09-24
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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