基于Simplorer/Matlab的交错反激微功率光伏并网逆变器研究

Study on Photovoltaic Grid-connected Interleaved Flyback Inverter Based on Simplorer/Matlab

交错反激变换器具有结构简单、成本低、含电气隔离等优点,在微功率光伏并网系统中得到广泛应用。论文首先介绍了交错反激微功率光伏并网逆变器的工作原理及并网电流控制策略,然后介绍了联合Simplorer、PExprt与Matlab三款软件对逆变器进行建模仿真的方法。最后设计了一台输出220W的交错反激微功率光伏并网逆变器实验样机,通过实验验证了理论分析的正确性和仿真方法的可行性。该文对设计交错反激微功率光伏并网逆变器具有一定的意义。

The interleaved flyback converter has the advantages of simple structure,low cost and electrical isolation,which is widely used in micro-power grid-connected photovoltaic system.This paper firstly introduces the working principle and grid current control strategy of the interleaved-flyback micro-power grid-connected photovoltaic inverter,and then introduces the method of modeling and simulation of the inverter using Simplorer,PExprt and Matlab softwares.Finally,an interleaved-flyback micro-power grid-connected photovoltaic inverter with220W output is designed,which verifies the correctness of the theoretical analysis and the feasibility of the simulation method.This paper has a certain significance for the design of interleaved-flyback micro-power grid-connected photovoltaic inverter.