中文摘要：

提出一种新型的阻抗源Buck／Boost整流器，将Z—Source网络应用于单相全控桥式电路，利用Z型无源网络实现电源和负载的耦合，可灵活地获得升／降直流电压。与传统的实现降压级联电路相比较，阻抗源整流器不需在上下桥臂的驱动脉冲中加死区，减少了输入电流波形的畸变，而且具有效率高，电路体积小等优点。通过仿真和实验电路测试，证实了以上的分析。

英文摘要：

A novel single phase Z-Source Buck/Boost rectifier is presented, in which an impedance network is employed to couple the rectifier main circuit to the load, thus it provides unique features that cannot be obtained in a traditional full bridge rectifier. The Z-Source rectifier can access buck or boost function without using two-stage power conversion, so it overcomes the limitations of the traditional cascade buck rectifier. It needn＇t add traditional the dead time in bridge devices, thus avoid distortion of the input current. In addition, it has the virtues of higher efficiency and smaller volume. The simulation and experiment results verify the pro posed theories.