Simulation Study of MPPT Strategy of Photovoltaic Grid-Connected Generation System Based on Single Parameter Control

Photovoltaic (PV) grid-connected system is the development trend of photovoltaic systems. According to the PV grid-connected system characteristics, analyzes the maximum power point tracking(MPPT) control strategy based on two-stage power conversion architecture, proposed a novel MPPT control algorithm, it can achieve the maximum power point tracking by only detect one parameter-the inverter output current. In the Matlab/Simulink simulation environment, building the system model and simulation based on the control scheme, the system can find the maximum power point quickly and steadily, compared with the widely used MPPT algorithm simulation result, proved the correctness and feasibility of control scheme, has practical value.