Research On Coordinated Control Strategy Of Wind-solar Complementary Power Generation System

The Maximum Power Point Tracking technology introduced in this paper can effectively improve the efficiency of wind power generation and photovoltaic power generation,and the improved MPPT control strategy can improve the running speed and accuracy of wind-PV complementary power generation system.In view of the problems existing in the control strategies of the two systems in the wind-solar complementary power generation system,a new method of battery energy storage is proposed.Firstly,according to the current situation at home and abroad,the MPPT problem of wind-solar complementary power generation system is analyzed.On this basis,the working principle of wind power generation and photovoltaic power generation is expounded.Secondly,based on the basic theory of wind-solar complementary power generation system,this paper introduces the working principles of photovoltaic power generation and wind power generation.Based on the basic principles,the two power generation systems are modeled,simulated and analyzed.The maximum power point tracking control strategy of photovoltaic power generation based on improved crowd search algorithm is proposed.And the improved artificial fish swarm algorithm is used to study the power output control strategy of wind power generation system.Through comparative analysis of simulation results,it is verified that the improved MPPT control strategy proposed in this paper can effectively reduce the tracking time,and the advantages of quick solution can improve the output efficiency of the two systems in the wind-solar complementary power generation system.Finally,in view of the three main factors that affect the working state of batteries in off-grid PV PV power generation system,namely the output of wind power generation system,the output of photovoltaic power generation system and the load conditions,the multi-stage charging method is proposed to accelerate the charging and discharging speed of batteries and extend the service life of batteries.