一种带PWM电流源的12脉波整流器研究  

12-Pulse Diode Rectifiers with an Active PWM Current Source DONG Jin-ming,MENG Fan-gang,ZHU Yi,YANG Shi-yan(Harbin Institute of Technology,Harbin 150001,China) Abstract:12-pulse diode rectifiers still include large harmonic contents in three-phase input cu

作　　者：董晋明[1] 孟凡刚[1] 朱屹[1] 杨世彦[1] 

机构地区：[1]哈尔滨工业大学,电气工程及自动化学院,黑龙江哈尔滨150001

出　　处：《电力电子技术》2010年第12期110-112,共3页Power Electronics

摘　　要：12脉波整流电路的输入电流含有大量谐波,在大功率场合会产生严重的危害。为此研究了一种带有源PWM电流源的12脉波整流器,通过增加一个小功率的半桥逆变电源,将其产生的特定三角波电流注入到整流器直流侧,即可有效抑制电网三相电流的谐波,使电网输入电流接近正弦波。分析了该整流器的谐波抑制原理,给出了有源PWM电流源的硬件实现方案。实验结果表明该系统结构简单,谐波抑制效果好,有较高的实用价值。12-pulse diode rectifiers still include large harmonic contents in three-phase input current and many serious problems are caused in large power occasions especially.This paper discusses a 12-pulse diode rectifier with an active PWM current source.A low power half-bridge inverter injects the specific triangular current into DC link and then large harmonic contents in three-phase input current are restrained obviously.At this time,the waveform of three-phase line current is nearly sinusoidal.This paper analyzes its harmonic restraint principle and designs the hard-ware circuit.The experimental results of the 2 kW experimental prototype indicate that the structure of this system is simple and harmonic contents of the line current can be suppressed obviously.The application of this circuit is high.

关 键 词：12脉波整流器 电流注入 谐波抑制 

分 类 号：TM461[电气工程—电器]