A system of the present invention may mitigate leakage currents in non-isolated charging stations for electric vehicles. The system may include a bank of one or more parallel capacitors per phase electrically coupled to an AC voltage source, wherein a neutral point of the one or more parallel capacitors is electrically coupled to a DC ground; a bank of one or more inductors per phase electrically coupled to the one or more parallel capacitors, wherein each inductor is in series with and downstream from one capacitor; a rectifier electrically coupled to and downstream from the one or more parallel inductors, wherein the rectifier converts the AC voltage source to a DC voltage for supply to a battery; a DC bus electrically coupled to the rectifier; and a controller, wherein the controller is configured to mitigate the leakage currents by controlling a voltage of at least one of the bank of one or more parallel capacitors.
本发明的系统可减轻电动车辆的非隔离式充电站中的泄漏电流。该系统可包括:逐相电耦合至交流电压源的一组一个或多个并联电容器,其中,一个或多个并联电容器的中性点电耦合至直流地线;逐相电耦合至一个或多个并联电容器的一组一个或多个电感器,其中,每个电感器与一个电容器串联并在其下游;电耦合至一个或多个并联电感器并在其下游的整流器,其中,该整流器将交流电压源转换为直流电压以提供给电池;电耦合至整流器的直流母线;以及控制器,其中,该控制器配置为通过控制该组一个或多个并联电容器中至少一个的电压来减轻泄漏电流。
NON-ISOLATED DC FAST CHARGER FOR ELECTRIC VEHICLES
电动车辆的非隔离式直流快速充电器
2021-08-24
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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