Micro-inverter fed solar Photovoltaic power generation system Global Renewable Energy Summit, White Orchid Convention Center, Bangalore, 23rd – 25th April, 2015 Micro-inverter fed solar Photovoltaic power generation system Central Inverter: Poor redundancy High Efficiency String Inverter: Partial shading issue. DC Cabling: High current stress Expensive Micro-Inverter: Total power converter integrated with panel Usually Single-phase output(LT) No dc cabling , hence no dc protection requirement Maximum possible energy extraction from panels(25-30% increase on annual aggregate) 2-stage power conversion system(variable DC-fixed VDC-LTAC)commercially deployed. Inverter topology : H-bridge(isolation and reduce size of filtering) DC-DC converter topology : Resonant Converter based(inherent soft switching) Series LCL : inherent dc blocking capability Transformer leakage can doubled as series inductance Usually frequency controlled (Parameter variation affects gain) P.Elanchezhian Senior Research Fellow, Energy Efficiency and Renewable Energy Division, Central Power Research Institute, Prof. Sir. C. V. Raman Road, Bangalore 560 080 Ph: +919994111441 elanchezhian_srf@cpri.in