Research And Design Of Photovoltaic Energy Storage System Applied In Wireless Power Transmission

With the gradual depletion of fossil energy,Photovoltaic power generation is being paid more and more attention.Photovoltaic energy storage system is a platform to solve the problem that photovoltaic power generation is subject to environmental impact.The wireless power transmission system can solve the problems of contact spark,mechanical wear and so on.In order to solve the problem that the stability of photovoltaic power generation system power and power transmission security.This paper,the wireless power transmission system is combined with the photovoltaic energy storage system as the load module,the stability of the system is studied.Analysed the working principle of the optical storage wireless power transmission system.The principle of each component in the system is introduced,and the small signal model of the interface converter is established.The modeling of loosely coupled transformer of wireless power transmission system are presented.Select primary side series secondary side series capacitor compensation mode.Conclusion that controlling the input voltage of the wireless power transmission system can control the output characteristics is obtained.In photovoltaic energy storage system,put forward layered coordinated control strategy of DC bus voltage as control signal.In mode 3,different working modes are compared.A Buck converter is designed as an interface circuit between the wireless power transmission system and the DC bus to achieve controlling the output power of the wireless power transmission system.The PI parameters are calculated,and the stability and reaction speed of the system are improved.The feasibility of the control strategy is verified by the simulation.Experimrnt of the DC/DC interface circuit is done,and the working characteristics of the interface circuit are verified.