The topologies family include single four - quadrant power switch mode , push - pull mode , half - bridge mode , and full - bridge mode circuits . taking full - bridge mode circuit as an example , the operational mode , steady principles , transient voltage feedback control strategy of the converter are investigated . the output characteristic curve , the design for the key circuit parameters and the reference sinusoidal circuit which is synchronous with the signal of n or 1 / n times line voltage frequency are given 该电路拓扑族包括单四象限功率开关式、推挽式、半桥式、全桥式电路,以全桥式电路为例分析研究了这类换器工作模式、稳态原理与电压瞬时值反馈控制策略,给出了变换器的外特性曲线、关键电路参数、与电网电压n倍频或n分频信号同步的基准正弦电路的设计。