Transformerless Photovoltaic Grid-Connected Inverters

This book focuses on a safety issue in terms of leakage current, builds a common—mode voltage analysis model for TLIs at switching frequency scale and develops a new modulation theory referred as “Constant Common—Mode Voltage Modulation” to eliminate the leakage current of TLIs. Transformerless Grid—Connected Inverter (TLI) is a circuit interface between photovoltaic arrays and the utility, which features high conversion efficiency, low cost, low volume and weight. The detailed theoretical ...