The invention belongs to the technical field of three-phase power conversion, and particularly provides a Delta type three-phase single-stage isolation type direct current charging topological structure which comprises a power grid, an alternating current side LC filter, a bidirectional Delta type matrix converter, a high-frequency transformer T, an H-bridge transformer, a direct current side LC filter and a load end battery pack. A power grid is connected to a load end battery pack through the AC side LC filter, the bidirectional Delta type matrix converter, the high-frequency transformer T, the H-bridge transformer and the DC side LC filter in sequence. The performance requirements of the power grid end and the battery end can be considered, the requirements of low power grid current harmonic wave, unit power factor and the like can be met, and meanwhile, stable direct current output can also be achieved on the battery side; particularly, due to the use of the bidirectional Delta-type matrix converter, the working voltage is connected to the high-frequency transformer T through two current circulation paths, and the flow capacity of the converter is greatly improved.
本发明属于三相功率变换技术领域,具体提供一种Delta型三相单级隔离式直流充电拓扑结构,包括电网、交流侧LC滤波器、双向Delta型矩阵变换器、高频变压器T、H桥变压器、直流侧LC滤波器和负载端电池包;电网依次通过交流侧LC滤波器、双向Delta型矩阵变换器、高频变压器T、H桥变压器和直流侧LC滤波器连接到负载端电池包;本发明能够兼顾电网端与电池端的性能需求,可以实现电网电流谐波低、单位功率因数等需求,同时,电池侧同样能够实现稳定的直流输出;尤其是,双向Delta型矩阵变换器的使用,使得工作电压经由两个电流流通路径连接至高频变压器T,大大增加了变换器的通流能力。
Delta type three-phase single-stage isolation type direct current charging topological structure
一种Delta型三相单级隔离式直流充电拓扑结构
19.04.2024
Patent
Elektronische Ressource
Chinesisch
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 / 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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