Influence of irradiance, ambient conditions and AC power output on micro inverter temperature-overview

Solar energy is one of the cleanest and reliable sources of renewable energy on earth. Conventionally, extraction of solar power for electricity generation was limited to PV farms, however lately distributed generation form of solar power has emerged in the form of residential and commercial Grid Tied micro-inverters. Micro inverters temperature is strongly correlated with ambient temperature and PV module temperature, and moderately correlated with irradiance and AC power. Ambient temperature is the influencing factor under conditions of low irradiance in morning hours, when the irradiance is below 60 W/m2. Noon time data analysis reveals that the micro inverters thermal behaviour is more strongly influenced by PV module temperature than AC power. In this paper review about electrical circuit topology and Influence of irradiance, AC power, ambient temperature on PV module and micro inverter are discussed.