Research on an Improved Method for Maximum Power Point Tracking of Photovoltaic

In order to improve the efficiency of photovoltaic, it is necessary to track the maximum power point(MPP) all the time. After studying various algorithms, a new algorithm was presented based on online short-circuit current, open-circuit voltage, and variable step of perturbation and observation method. This algorithm could track MPP change rapidly and accurately without the disturbance of photovoltaic system, and also can reduce the power oscillation around MPP and the light mutation of the false judgement phenomenon. The simulation results show that the algorithm has a good dynamic and steady-state performance.