一种新型的单端正-反激式高压电源设计

Design of a Novel of Forward-Flyback Single End High Voltage Power Supply

提出了一种新型单端正-反激式高压电源的拓扑形式,它兼具了正激式电源和反激式电源的优点,电路简单,元件较少,无需添加铁心复磁电路,具有高电压增益和高效率。介绍了该电源的3种工作模式,分析了电源的工作原理,得出了电压增益公式和电源变压器的设计方法。最后进行了电路仿真和实验,设计的实验电源功率为30W,输出电压为1.5kV,效率高达92%;实验结果符合仿真结果,证明该电路是一种很好的高压电源拓扑形式。

A novel forword-flyback single end high voltage power supply topology is reported,it takes the advan-tages of forword power supply and flyback power supply：simple circuit,fewer component,needless to add the reset circuit for core,higher voltage gain,higher efficiency.The article presents three working mode of the power supply,analyzes its working principle, and gives the voltage gain fomula of the supply power and the design method of power transformer .At last,the simulation and experimental results are given,the experiment power supply is designed for a 30W 1.SkV output rating,and its efficiency is high to 92%.The experimental results conform with the simulative results,which proves that the circuit is a very good topology of high voltage power supply.