System and Method for Controlling of Photovoltaic System Using Active Power Control

摘要

The present invention is a solar power generation system using active power control that enables high power generation efficiency of the solar power generation system by performing MPPT based on active power control when the amount of insolation fluctuates to quickly and accurately follow the maximum output point. It relates to an apparatus and method for controlling MPPT, comprising: a solar panel; a solar inverter unit that converts and outputs AC power so that DC power input from the solar panel can be used as commercial power; between solar output and terminal voltage The reference value (P _mpp ) for the solar inverter output (P _inv ) is determined by using the curve ( P_mpp ) that connects the maximum output points according to the change in solar radiation in the relationship PV curve, and the terminal voltage of the solar panel (V _pv ) And an active power-based inverter control unit configured to perform an operation according to a maximum power point tracking (MPPT) control that tracks a value of a terminal voltage that varies according to the amount of insolation in the solar inverter by measuring.