A System Design of 100 kW Photovoltaic Grid-connected Inverter

Grid-connected PV system with the advantages of low cost,stable output power,is the main trend of the future of photovoltaic power generation,and grid-connected inverter is the core unit of grid-connected photovoltaic power generation system.Based on the principle of the inverter,a 100 kW three-phase photovoltaic grid-connected inverter system design is proposed in this paper.It introduces the system's control strategy programs and the parameters design method and selection of key components of the main circuit in detail.Prototype test results show that the inverter is designed reliable and it can meet all design specifications.It has high value in application and promotion.