The invention discloses an embedded T-shaped totem pole three-level rectifier suitable for a charging pile. A switch tube S1, a switch tube S2, a switch tube S3 and a switch tube S4 are connected to form an embedded T-shaped three-level bridge arm; the diode D1, the diode D2, the switch tube S1, the switch tube S2, the switch tube S4 and the inductor L branch are connected to form a totem-pole bridgeless structure; the alternating current power supply ug is connected with the inductor L for charging and discharging; the capacitor C1 and the capacitor C2 are connected in series to form a direct-current bus, and each capacitor bears half of the voltage Udc of the direct-current bus; the multi-level rectifying circuit is combined with the totem-pole bridgeless PFC rectifying circuit, the characteristic of small common-mode interference of the totem-pole PFC is reserved, the efficiency of the rectifying circuit is improved, the input current THD is reduced, and meanwhile, the multi-level rectifying circuit further has the advantages of being capable of generating multiple voltage steps, low in voltage stress and low in cost.
本发明公开了一种适用于充电桩的嵌入式T形图腾柱三电平整流器,通过开关管S1、开关管S2、开关管S3和开关管S4连接构成嵌入式T形三电平桥臂;二极管D1、二极管D2、开关管S1、开关管S2、开关管S4与电感L支路连接构成图腾柱无桥结构;交流电源ug与电感L连接进行充放电;电容C1和电容C2串联形成直流母线,每个电容承受直流母线电压Udc的一半;开关管S4连接在电容C1和电容C2之间,采用多电平整流电路与图腾柱无桥PFC整流电路结合,保留了图腾柱PFC共模干扰小的特点,提高了整流电路效率,降低了输入电流THD,同时,多电平整流电路还具有能产生多电压阶梯、电压应力低、成本低的优势。
Embedded T-shaped totem pole three-level rectifier suitable for charging pile
一种适用于充电桩的嵌入式T形图腾柱三电平整流器
2024-11-12
Patent
Electronic Resource
Chinese
IPC: | 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 / 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 |
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