基于ESPM的DCM模式下的PFC-BOOST DC/DC变换器分析

Analysis of PFC-BOOST DC/DC converter in DCM mode based on ESPM

考虑了ESPM方法对于在PFC-BOOST的拓扑的适用性问题。描述了PFC-BOOST拓扑在DCM模式下的分数阶模型,这对接下来的控制起到了重要的作用。建立了ESPM控制下PFC-BOOST拓扑的DCM模式的分数阶模型的占空比求解模型,以及分数阶元器件的模型。最后,通过仿真证明使用ESPM方法运用在PFC的拓扑中的可行性及有效性。结果表明,使用分数阶的模型可以达到整数阶模型所不能达到的效果。

The applicability of the ESPM method to the topology in PFC-BOOST is considered. The fractional order model of PFC-BOOST topology in DCM mode is described, which plays an important role in the subsequent control of this paper. The duty cycle solving model of the fractional order model of the DCM model of the PFCBOOST topology under ESPM control and the fractional order component model are established. Finally, the simulation proves the feasibility and effectiveness of using ESPM method in PFC topology. The results show that using fractional order models can achieve effects that integer-order models cannot.