谐振法消除高频变压器分布电容影响的研究

Research on Eliminating the Influence of Parasitical Capacity in High Frequency Transformer using Resonant Method

在串联谐振恒流充电电源(Constant Current Power Supply,简称CCPS)中,高频变压器的分布电容会对充电电源的恒流特性产生影响。通过理论分析验证实施了一种仅加入谐振电感即可消除高频变压器分布电容对充电电源恒流特性的影响且又简单易行的方法。给出了谐振法消除高频变压器分布电容影响的理论模型,在此基础上进行了理论分析和仿真研究。实验结果表明,谐振法可以消除高频变压器分布电容对充电电源恒流特性的影响,改善充电波形,方法简单易行。

In series resonant constant current power supply （CCPS）, parasitical capacity in high frequency transformer will influence the constant-current characteristic of CCPS.This paper presents a method which could easy eliminates the influence of parasitical capacity in high frequency transformer only with a resonant inductance and gives the theory model for eliminating parasitical capacity in high frequency transformer,and makes some analysis by simulation.Experiment indicates that resonant method could eliminates the influence of parasitical capacity in high frequency transformer,and it is easy to put into practice.