Research On Bidirectional Resonant Wireless Power Transmission System

The wireless power transmission is an emerging technology, solving the problem of metal contact in traditional electricity and improving the flexibility and safety in the system. Nowadays the bidirectional wireless power transmission technique has been gradually mentioned. It can meet the requirement of the bidirectional energy delivery by the bidirectional structure topology. It has huge prospect in cell-phone, pads chargers and the electrical vehicles. With the mess of advantages in the wireless power transmission, it will be applied in the society shortly.This article introduces the background and current situation of the development of wireless power transmission. Introduction to the hot issue of the bidirectional wireless power transmission. Introduction to some issues of the technology briefly. Analysis of the application fields of wireless power transmission. Introduction and analysis of the types of wireless power transmission technology. Create a simple model of series resonant topology. Simulation analysis on this model by Saber simulation software. Analysis of several factors that affecting the wireless power transmission. The Maxwell software in Ansys company is used to establish the 3D model of magnetic coupled wireless power transmission. Making a comparison of the different coils shape. Determine the final coil structure. Calculate the inductance of the coils and the resonant capacitor. Finally realize the 3D model simulation of the system and obtain the simulation data.Then the system experiment platform is designed. The design includes DSP emulator, the full bridge convertor, coupled coil design, the rectifying circuit design. Introduces the design idea and steps stage by stage. Get the device parameters by calculation. Make a comparative analysis of circular and helical coupling coil with Maxwell software. And finally realize the bidirectional wireless power transmission.At last the optimization to the system is discussed. Through the research on the size of the coil, the inverter circuit and the penetrability of the system.Finally get the solution to optimize the output power of the system, and enhance the system stability.