新型单级隔离型PWM变换器及其控制研究  

A Novel Single-stage Isolated PWM Convertor and Its Control Strategy

作　　者：夏泽中[1] 任大庆[1] 任薛蓓[1] 杨荣德[1] 

机构地区：[1]武汉理工大学自动化学院,湖北武汉430070

出　　处：《武汉理工大学学报（信息与管理工程版）》2012年第5期539-541,554,共4页Journal of Wuhan University of Technology：Information & Management Engineering

基　　金：武汉市科技计划基金资助项目(201010721291);国家科技支撑计划基金资助项目(2009BAF40B03)

摘　　要：将传统的工频整流、功率因数校正和高频逆变环节进行整合,提出了一种新型单级隔离型PWM变换器。详细分析了其工作原理及控制方式,研究了该电路拓扑的输入、输出性能指标及其与控制参数之间的关系。通过对实验样机的设计和仿真分析表明,该电路拓扑的实验装置具有功率因数较高、输入电流的总谐波畸变较低、输出电压纹波小的特点,并且实验样机中使用了单周期控制芯片,动态响应快,外围电路简单,易于实现。A new PWM power converter topology which integrates the control of frequency rectification,power factor rectification and DC-AC inverter in single stage was introduced.Operation modes of the converter topology were analyzed in detail and validity of the circuit was verified by digital simulation.For performances testing,a prototype was built with a one-cycle controller.Simulation and experiment results show that the single-stage converter can perform both of the power factor correction and the isolated DC voltage control with lower current harmonics and voltage ripples.

关 键 词：总谐波畸变 单级变换器 功率因数 

分 类 号：TM461[电气工程—电器]