Research on Maximum Power Point Tracking Method Based on Adaptive Control in Solar Photovoltaic System

In order to raise efficiency of photovoltaic system and in pursuit of optimum operating status of photovoltaic cells,a maximum power point tracking method(MPPT) for photovoltaic cells based on adaptive control is proposed.The method is on the basis of perturb and observe method and adjusts disturbance amplitude in accordance with variation of working point of the system so as to approach the maximum power point as possible.The simulation result shows that MPPT based on adaptive control can stably and efficiently track maximum power point of photovoltaic array;under circumstance of disturbance of such parameters as sunlight intensity,ambient temperature and etc,the method can seek new working point rapidly,keep the system stable and show good dynamic performance.