Estudo da viabilidade técnica e econômica de um sistema fotovoltaico considerando a saturação de inversores

Abstract

To make possible the interconnection between a photovoltaic system and the conventional electric network it is necessary to use inverters, which are electronic devices responsible to converter the energy coming from the photovoltaic modules, which are on direct current to alternative current. The inverter sizing is based on its nominal power and the photovoltaic system electrical parameters, therefore the inverter undersizing in relation to the photovoltaic generator (inverter power lower than the generator power) can be seeing as a possibility to reduce the system implementation costs without causing significantly power lost. This project option is possible due the systems work only in sporadic peak conditions, because the energy generation depends mostly of the irradiance and modules temperature, which are variables. One way to analyze if the sizing is correct it is through inverter sizing factor, defined as the relation between the inverter nominal power and the photovoltaic generator maximum power, or peak power.