Photovoltaic maximum power point tracking control method based on improved conductance increment method

The invention relates to a photovoltaic maximum power point tracking control method based on improved conductance increment method. An improved variable step size and an asymmetric fuzzy control are combined, and the asymmetric fuzzy control is performed near a maximum power point, and the improved variable step control is adopted for less than a maximum power point time period.The method can effectively weaken the oscillation around the maximum power point of the system, improve the stability, the tracking precision and the response time on the premise of ensuring the normal operation of thesystem, and simultaneously effectively weaken the oscillation phenomenon around the maximum power point of the system, ensure the safe and reliable operation of the whole photovoltaic power generationsystem, is suitable for a distributed new energy photovoltaic power generation system, and can be popularized to other new energy maximum power point control methods. 本发明涉及种基于改进电导增量法的光伏最大功率点跟踪控制方法，采用于改进变步长与非对称模糊控制相结合，在最大功率点附近