An overview of PV system

Photovoltaic power generation system (PV system) is a device which changes the solar power into the electricity by solar cells and the principle of the solar cells is the use of semiconductor materials electronics characteristics of P-V conversion. PV system and its application is a profound research project, facing the 21st century, which gathers the utilization of green renewable energy, improve the ecological environment, ameliorate people's living conditions as integral whole will be of great benefits to economy, politics, coupled with society, and also contains rich academic studies value and the basic theory issues. This paper expounds the background and significance of PV system, discusses the forefront of the technologies which contains maximum power point tracking, islanding phenomenon, inverter that PV system is facing and makes a conclusion.