一种新型正反激变换器的研究

A Novel Forward-flyback Converter

信息技术的发展对电源技术提出了更高的要求,目前电源模块的发展方向是高磁芯利用率、高效率、小输出电流脉动。此处提出一种新型正反激变换器,详细分析了其工作原理以及电路在各阶段的工作状态,对变压器次级漏感、隔直电容、滤波电感谐振的工作状态进行了仿真及实验验证。结果表明,这种变换器综合了正激和反激变换器的特点,能提高变压器利用率及效率。

The development of the information technology make a higher standard for the power supply,as high mag-net core utilization ratio and efficiency,low current ripple.A novel forward-flyback circuit is proposed,and the princi-ple of operation is analyzed.This novel converter is confirmed to have some prominent features when leakage induc-tance of the transformer secondary side,blocking capacitors and filter inductors resonant work by means of the simu-lation and experiment.As a result,this converter combines the forward and flyback feature,can increase the transor-mer utilization,improve the converter efficiency.