三相PWM整流器非升降压拓扑结构下调压范围的拓宽  

Wide Range Voltage Regulating for Three-phase PWM Rectifier with Non Up-down Topology

作　　者：向东[1] 曾启帆[1] 于飞[1] 

机构地区：[1]海军工程大学电气工程系,武汉430033

出　　处：《舰船电子工程》2015年第9期183-187,共5页Ship Electronic Engineering

摘　　要：传统的三相两电平PWM整流器主电路拓扑是一种升压结构,致使输出电压最小稳压值较高,制约了整流器的应用。论文通过对交流侧稳态相量关系、功率守恒等进行分析,探讨了影响输出电压大小的因素。给出了整流器在不改变拓扑结构的情况下,通过改变交流侧的功率因数达到降低输出电压的最小稳压值的方法及其效果分析。仿真和实验证明了分析的正确性和可靠性。The traditional main circuit topology of three‐phase two‐level PWM rectifier is a boost structure ,which re‐sults in high output voltage minimum value and restricts its applications .In this paper ,the influence factors of the output voltage value is discussed based on the analysis of steady state phasor relationship of the AC side ,power conservation rela‐tionship ,etc .The method of reducing the output voltage minimum value without changing the topology is given .This meth‐od achieved by changing the AC side power factor .Simulation and experiments prove the correctness and reliability of the a‐nalysis .

关 键 词：PWM 整流器 调压范围拓宽 功率因数 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]