基于PWM交流斩波的高压直流电源  

A High-voltage DC Power Supply Based on PWM AC Chopper

作　　者：王归新[1] 严浩[1] 张陆洲[1] 张红[1] 

机构地区：[1]三峡大学,宜昌443002

出　　处：《电源世界》2014年第2期36-38,共3页The World of Power Supply

摘　　要：本文提出了一种结构新颖的高压直流电源。该电源主要由两部分构成:交流斩波部分和12脉波整流部分。交流斩波器通过控制占空比方便地调节输出电压,而串联式的二极管12脉波整流器,则可得到高质量的高压直流。控制电路采样高压直流电压作为反馈,经PI调节器调节交流斩波器的占空比。仿真结果表明,该直流电源在输入及负载变化时,能够快速响应、输出稳定。实验结果证明了该方法的可行性。This paper presealts a novel structure of high-voltage DC power supply. The power supply mainly consists of two parts, the AC chopper and the 12-pulse rectifier. With controlling the duty cycle, AC chopper can easily change the output voltage, and the 12-pulse rectifier that include two seres three-phase rectifier bridges convert the ACto HVDC. By sampling the high voltage DC voltage of output as a feedback, PI regulator will adjust the duty cycle of the AC chopper. The simulation results testify that the proposed DC supply has good stability and fast response when the output waves because of the changes of input voltage or load, The experimental results show that the method is feasible.

关 键 词：高压直流电源 交流斩波器 12脉波整流 

分 类 号：TN86[电子电信—信息与通信工程]