The invention discloses a rail transit vehicle and a multi-energy-storage-power-supply grid-connected control method and system thereof. Energy storage power supplies which can be connected to a gridare automatically selected according to the communication state between the energy storage power supplies and a vehicle control unit and whether the voltage difference value of the energy storage power supplies is within a threshold value or not, and after the voltage of the energy storage power supplies connected to the grid is balanced, other remaining energy storage power supplies meeting the voltage difference threshold value can be input. The utilization rate of simultaneous work of the multiple groups of energy storage power supplies is improved, and the situation that the energy storagepower supplies are damaged due to overlarge loop current caused by overlarge voltage difference among the energy storage power supplies is avoided. Therefore, the multiple groups of energy storage power supplies are made to always work in a reasonable voltage range, the service life of the energy storage power supplies can be prolonged, and the cost performance of the energy storage power supplies applied to an actual tramcar is ensured.
本发明公开了一种轨道交通车辆及其多储能电源并网控制方法、系统,根据储能电源与其通信状态及储能电源压差值是否在阈值内自动选择哪些储能电源并网,先并网的储能电源电压均衡后,可再投入剩余满足压差阈值的其他储能电源,提高了多组储能电源同时工作的利用率,也规避了因储能电源相互之间压差过大而引起回路电流过大损坏储能电源。使多组储能电源总是工作在合理的电压范围,能延长储能电源的使用寿命,保证了储能电源在实际有轨电车上应用的性价比。
Rail transit vehicle and multi-energy-storage-power-supply grid-connected control method and system thereof
轨道交通车辆及其多储能电源并网控制方法、系统
2020-12-29
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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