SPWM逆变电源直流偏磁的DSP控制研究

Elimination of the D.C. Magnetic Biasing in SPWM Inverter with DSP

为解决SPWM全桥逆变电源中存在的直流偏磁问题 ,本文提出了一种基于DSP消除SPWM全桥逆变器直流偏磁问题的控制方案 ,通过采样输出变压器原边电流 ,用数字PI控制器来调整触发脉冲宽度 ,较好地解决了SPWM逆变电源中存在的直流偏磁问题。

This paper presents a control scheme based on DSP to e liminate the dc magnetic biasing existing in SPWM inverter by sampling the outpu t current to control the trigger pulse width with PI control.