关键词: 光伏电池, 最大功率点跟踪, 粒子群优化, 恒定电压法

Abstract:

In view of the poor accuracy of photovoltaic system maximum power point tracking (MPPT),a new photovoltaic MPPT is proposed,which combines the improved constant-voltage method based on temperature correction coefficient online with particle swarm optimization algorithm.When the system deviates from the maximum power point,a new operating point can be searched through the improved constant voltage method quickly.With the help of PSO maximum power control,accuracy is improved at the same speed.Simulation of the method in Matlab/simulink shows that the system can search the maximum power point quickly.

Key words: photovoltaic cell;maximum power point tracking;particle swarm optimation;constant voltage method