一种四相整流电路及其工作机理分析  

Mechanism analysis of four-phase rectification circuit

作　　者：贺达江[1,2] 罗隆福[1] 许加柱[1] 赵志宇[1] 邵鹏飞[1] 刘福生[1] 

机构地区：[1]湖南大学电气与信息工程学院.湖南长沙410082 [2]怀化学院物理与信息工程系,湖南怀化418008

出　　处：《电力自动化设备》2009年第9期41-45,共5页Electric Power Automation Equipment

摘　　要：为降低整流系统产生的谐波,提出了一种四相整流新概念,对四相整流的接线方式、工作原理及其特有的谐波特性进行了分析,研究了四相整流电路的相关量与触发角的变化关系,并与传统的三相整流电路进行了对比。建立了Matlab/Simulink四相整流电路分析的仿真模型并进行了详细的仿真实验。研究表明:四相整流系统直流侧只存在4的倍数次谐波;在相同输入电压条件下,四相整流电路的输出电压和输出功率远大于三相整流电路;在相同输出功率情况下,四相整流电路各晶闸管承受的反向电压较三相整流电路低。A concept of four- phase rectification is proposed to restrain the harmonics of rectification circuit, Its wiring,working principle and harmonic characteristics are analyzed and the relation between relevant variable and firing angle is studied and compared with traditional three- phase rectification circuit. Simulation model of four- phase rectifier is established by Matlab/Simulink. Experimental results show that ,there is only four- order harmonic at DC side of four- phase rectification circuit ,its output voltage and power are higher than those of three- phase rectification circuit on the condition of same input voltage, but the withstanding reverse voltage of its thyristors are lower.

关 键 词：四相整流 机理分析 谐波特性 4次谐波 三相整流 四相输电 

分 类 号：TM461[电气工程—电器]