利用PSPICE仿真分析PWM控制电路

Simulating and analysis of PWM control circuits using PSPICE

介绍了利用PSPICE设计分析三相DC/AC逆变器PWM控制电路的方法。重点介绍了正弦波脉宽调制法、准正弦波脉宽调制法和单元调制PWM法的PSPICE实现。给出了基于准正弦波脉宽调制法的DC/AC逆变器的仿真实例,并运用到《电力电子技术》的教学与实验中,取得了良好的效果。

In this work, the method using PSPICE to design and analysis the control circuit stage for a three - phase DC/AC converter is introduced. Several PWM techniques, such as sinusoidal waveform pulse width modulation, quasi sinusoidal waveform pulse width modulation and cell pulse width modulation, are given. An exampled is showed. The control circuit based on quasi sinusoidal waveshapes pulse width modulated and power circuit are included and applicated to the teaching and experimental teaching of Power Electronics. It has achieved good results.