基于DSP的三相PWM整流器  

Three-phase PWM rectifier based on DSP

作　　者：王晓峰[1] 

机构地区：[1]集美大学工程技术学院,福建厦门361021

出　　处：《应用科技》2008年第6期33-36,共4页Applied Science and Technology

摘　　要：对双PWM变频调速系统中的三相PWM整流器及其控制方法进行了研究.在推导出PWM整流器三相静止坐标系数学模型的基础上,引入两相旋转坐标系,推导出两相旋转dq坐标系下的数学模型.应用前馈控制技术,设计了基于PI调节器的电流闭环和电压闭环的双闭环控制系统,并采用以DSP为核心构建PWM整流器控制系统.该PWM整流器可以有效地抑制谐波,实现网侧单位功率因数控制及能量双向流动。This paper studied the three-phase PWM （pulse width modulation） rectifier in dual PWM variable frequency speed regulation system. Its control system was designed. The mathematical model of PWM rectifier was derived in the three-phase static coordinate system. On this basis, we introduced two-phase rotating dq coordinate system and developed its mathematical model. Using feed-forward control technology, we designed a double closedloop control system based on current closed-loop and voltage closed-loop of PI regulator. The PWM rectifier control system with DSP as the core was constructed, which can effectively restrain the harmonic pollution and realize the bidirectional power transmit and the control over ac-side unit power factor closes to 1.

关 键 词：双PWM PWM整流器 数字信号处理器(DSP) 

分 类 号：TM921.5[电气工程—电力电子与电力传动]