基于零电压开关的三电平DC-DC变换器电压自平衡机制

Voltage balance of series capacitors is crucial for multilevel converters. In this article, a new voltage self-balance mechanism based on zero-voltage switching (ZVS) for a three-level dc-dc converter is proposed. First, the near-CRM (critical conduction mode) to realize ZVS and its resonance transition are analyzed in detail. Then, the resonance times at peak and valley currents are analytically ...