MULTI-INVERTER PHOTOVOLTAIC POWER GENERATION SYSTEM

摘要

The present invention relates to a photovoltaic power generation system having an inverter comprising multiple power conversion modules, particularly, a multi-inverter photovoltaic power generation system which improves the usage efficiency of an inverter by varying the capacity of the inverter according to the amount of power generated by a photovoltaic array and prevents accidental injury caused by residual charges on the power conversion modules. More specifically, the present invention relates to a multi-inverter photovoltaic power generation system comprising: a photovoltaic array which has multiple photovoltaic strings including multiple photovoltaic modules, and which generates electricity; a string optima which performs maximum power point tracking by being connected to the photovoltaic strings, transforms the voltage of the electricity, and then performs the maximum power point tracking by applying different tracking methods according to the power variation of the electricity; and an inverter which includes a main body which forms the exterior of the inverter and multiple power conversion modules which are formed to open/close by being selectively locked into or unlocked from the main body of the inverter, and which transforms the electricity converted by the string optima into AC power and outputs the AC power, wherein at least one of the multiple power conversion modules is configured to prevent accidental injury caused by residual charges on the power conversion modules when the power conversion modules are opened or unlocked from the main body of the inverter.