HYBRID TOPOLOGY SYSTEM FOR SINGLE-PHASE PHOTOVOLTAIC INVERTER

摘要

The present invention relates to a hybrid topology system for a single-phase photovoltaic inverter. More particularly, the present invention relates to a hybrid topology system for a single-phase photovoltaic inverter capable of obtaining a low earth current and high efficiency. For this, the present invention uses a method of switching an upper switch SW2 instead of a lower switch SW3 at negative in an existing hybrid topology. Thereby, EMI performance can be improved by preventing a current from flowing to a ground when the current circulates inside.