新型单相光伏微型逆变器

A New Single-phase PV Micro Inverter

对于现有的光伏微型逆变器,普遍使用的是反激式变换器实现DC/DC变换,但漏感和开关应力大等问题一直影响着它整体效率,虽然现在提出啦许多方面,但在效果上并不是让人满意。对于这些问题提出了一种新颖而又简单的光伏微型逆变器拓扑结构,由升降压斩波电路和反激式电路结合,通过分析了其结构和工作原理,发现能很好的解决漏感能量利用的问题,在开关应力方面有些显著的改善,通过Matlab/Simulink仿真验证理论的正确性,在波形方面,能很好的产生馒头波。

For existing photovoltaic micro inverter, commonly used is flyback converter DC/DC converter, but the leakage and switch should be high problem has been affecting the overall efficiency, although now put forward many ways, but in effect is not satisfactory. For these problems put forward a novel and simple photovoltaic micro inverter topology, by lifting pressure chopper circuit and flyback circuit combined through the analysis of its structure and working principle, can be very good to solve the leakage inductance energy utilization, produce in the switch should force some significant improvements, through Matlab/Simulink simulation theory is correct, in the waveform, good steamed bread wave.