SPWM逆變電源抗直流偏磁的研究

摘要：本文分析了導致逆變電源輸出變壓器直流偏磁的原因。在此基礎上提出了一種相應抗直流偏磁的對策—數字PI電壓積分調節法。通過仿真實驗證明了該種方法的可行性和有效性。 敘詞：SPWM；逆變器；直流偏磁 Abstract： By analyzing the causes of the flux imbalance in the output transformer of the inverter. A corresponding approach of avoiding flux imbalance-digital PI voltage integral is introduced in this paper. The practicability of the approach is proved to be effective by simulation. Keyword：SPWM; Inverter; Flux imbalance