【摘要】 将三电平概念引入到Sepic直流变换器中 ,提出一种新的三电平直流变换器的拓扑 Sepic三电平变换器。该变换器中 ,开关管和二极管的电压应力降低了一半 ,同时滤波电感的值也大大减小。分析了该变换器的工作原理 ,讨论了滤波器的设计 ,对实际存在的开关管电压应力不均衡问题提出了解决方案 ,并进行了实验验证 ,给出了实验结果更多还原

【Abstract】 This paper proposes a new Three Level(TL) converter, i.e.the Sepic TL converter based on the conventional Sepic converter. In this new topology the voltage stress of the switch is reduced and the filter inductor is also significantly reduced. Its operation principle and control strategies of the unbalance voltage are investigated. Experiment results are used to verify the analysis.更多还原