高功率因数单级BOOST正激组合变换器的稳态分析

Steady-state Analysis of a Single-stage Boost-forward Converter with High Power Factor

从能量的角度 ,对单级BOOST正激组合变换器在输入电感处于DCM、输出电感处于DCM和CCM两种情形分别进行了稳态分析 ,获得了其中间电容电压、输出输入电压变比等的解析表达式 ,并用指数函数近似法 ,将上述表达式化简为非常便于使用的形式 。

From the view point of energy,the steady state performance of a single stage BOOST forward converter with input inductor in DCM and output inductor in both DCM and CCM are analyzed respectively.Equation describing the voltage on the intermediate capacitor and the voltage conversion ratio are obtained.By exponential approximation,we simplify the above equations into quit closed form expressions.Experiment results are in positive with the analysis.