【摘要】 介绍了一种新型的两级功率因数校正变换器电路。文中对其结构和工作原理进行了分析,提出了当输出负载较轻时,存在于隔离变压器初级的激磁电流可用于减小直流母线电压。最后给出了一种240W的实验电路模型。实验结果和波形证明了上述分析的正确性。更多还原

【Abstract】 A new simple two-stage power factor correction converter is proposed in the paper,and also with the detail theoretical analysis.Noticing that,the magnetizing current of DC/DC transformer can be used to reduce the DC bus voltage in light-load conditions.A 240W prototype based on the proposed topology is built up and experimental results verify the analysis.更多还原