Dependence of irradiance of maximum power voltage of a photovoltaic power system (II)

摘要

Recently, generating power loss caused by maximum power point tracker (MPPT) mismatch of a photovoltaic power system (PV system) has become a serious problem. The authors are studying about generating power loss caused by MPPT mismatch of a PV system. In this paper, the relationship between irradiance and maximum power voltage calculated from I-V characteristics of a PV array was investigated. From these results, it became clear that maximum power voltage to be corrected by temperature shows constant value at the irradiance above 0.4kW/m{sup}2.