Single-phase low DC voltage pulse multi-port AC power conversion circuit

The invention relates to a single-phase low direct-current voltage pulse multi-port alternating-current power conversion circuit which comprises filter inductors, filter capacitors, a 1: 2 multi-port alternating-current bidirectional power conversion circuit, an alternating-current grid-connected port and an alternating-current load port, the 1: 2 multi-port alternating-current bidirectional power conversion circuit is provided with three output ends, and each output end is connected with one filter inductor; each filter inductor is connected with the live wire of each alternating current port, the live wire and the zero wire of each alternating current port are connected through the filter capacitor, switch multiplexing and a common zero wire structure are utilized, the number of power switches in the multi-port converter is reduced, the system capacity is not changed, the topological structure is simplified, and the system cost is reduced. 本发明是一种单相低直流电压脉动多端口交流功率变换电路，包括滤波电感、滤波电容、1:2多端口交流双向功率变换电路、交流并网端口和交流负载端