CAJ | 학술논문

针对单相脉宽调制(PWM)逆变器.在分析单相电压空间矢量脉宽调制(SVPWM)基本原理的基础上,给出了一种优化开关模式单相SVPWM的DSP实现方法.该模式有效避免了PWM周期问和逆变电压扇区间的电压矢量突变问题.降低了逆变开关损耗,且逆变输出波形谐波含量低.通过分析推导优化开关模式单相SVPWM的载波调制形式及其零序信号形式.论证了优化开关模式单相SVPWM与载波PWM的统一,实验结果验证了分析的正确性.
침대단상맥관조제(PWM)역변기.재분석단상전압공간시량맥관조제(SVPWM)기본원리적기출상,급출료일충우화개관모식단상SVPWM적DSP실현방법.해모식유효피면료PWM주기문화역변전압선구간적전압시량돌변문제.강저료역변개관손모,차역변수출파형해파함량저.통과분석추도우화개관모식단상SVPWM적재파조제형식급기령서신호형식.론증료우화개관모식단상SVPWM여재파PWM적통일,실험결과험증료분석적정학성.
For the single-phase PWM inverter control and through the basic principle analysis of single-phase space vector pulse width modulation(SVPWM) technique,this paper presents a optimal switching pattem single-phase SVPWM tech-nique based on DSP.This switching mode can effectively avoid the voltage vector sharp change between PWM periods or inverter voltage sectors.The optimal switching pattern single-phase SVPWM technique call reduce the switching depletion and the output distortion of inverter.Furthermore.the carrier-based PWM form and zero-sequence signal of the optimal switching pattern single-phase SVPWM is deduced.Through the analysis,the equivalence of optimal switching pattern sin-gle-phase SVPWM and carrier-based PWM is proved.The experiment proves the correctness of the analysis.