一种用于降低电压尖峰的隔离型双向AC-DC变换器简单无缝PWM方案

This article proposes an improved modulation scheme based on unipolar sinusoidal pulsewidth modulation for a single-phase single-stage isolated bidirectional ac–dc converter. A direct ac–ac conversion system connected with a high-frequency transformer typically suffers from high-voltage spikes because of the leakage inductors of the high-frequency transformer and the grid filter inductors, resulti...