Photovoltaic (PV) Inverters and Micro Inverters
Technical Dialogue Session
Renewable Energy Systems I
Transformerless PV Inverter, Leakage Current, Soft Switching, Critical Conduction Mode (CRM), Triangular Current Mode (TCM)
This paper presents critical conduction mode (CRM) single-phase transformerless full-bridge inverter in residential photovoltaic system. Basic operation principle for zero voltage switching of CRM full-bridge inverter, impacts of CRM operation on leakage current, and details of proposed switching modulation scheme for leakage current suppression are discussed. Experimental results with laboratory prototype validate its performance.