推挽式单级电流源高频链逆变拓扑研究

提出了一种新型的适用于低压输入的实现隔离DC/AC变换的结构拓扑-- 推挽式单级推挽电流源高频链逆变电路拓扑,介绍了它的工作原理,给出了参数设计及器件选择准则.研制的48VDC输入220V/50Hz输出500VA的实验样机证明了该电路的可行性,并表明了该电路具有结构简洁、可靠性高、电气性能优及效率较高的特点,是低压输入逆变器的一种理想拓扑.

Research on a Push-Pull Type Single-Stage DC/AC Inverter

In order to improve power density of inverter, resonant soft switching technique are researched, but in fact it is difficult to realize the goal for inverter because of additional components and stresses. So single-stage inverter with less components would be better. This paper presents a new-type simple one-stage inverter topology that is suit for low input voltage. It is constructed by push-pull current-source high-frequency link. The principle is introduced, and the main parameters of circuit are given. The experiment on a prototype of 500VA verified that it is a novel topology for middle-small power inverter because of the excellent performance such as simple construct, small volume and light weight, high reliability.