Study On Self- Orientation And Corresponding Control Technology Of A Multi-freedom Degree ICPT System

Inductive Coupled Power Transfer (ICPT) is a novel power transfer technology. It develops to deliver power contactlessly from power supply to one or more movable loads using modern power electronics, magnetic coupling techniques and control theory. The main advantages of the technology are flexible, safe, easy to maintain, highly reliable and environmentally friendly.This paper based on a national natural science foundation project"Research on key technology of efficient multi-degree freedom ICPT system"(50777071) and a chongqing science committee foundation project"Research and development on a novel power supply mode of urban electrified traffic"(CSTC2008A C3089), studies the issue that the flexibility of the pick-up mechanism or electric equipments is poor as well as related issues. The aim is to enhance the multi-degree freedom pick-up ability of the pick-up mechanism. So as to lay a good foundation to develop a kind of adaptive multi-degree freedom pick-up mechanism witch has a magnetic line of force direction automatic tracking capability. And the aim is to achieve the design of relevant circuits, ensure the realization of the multi-degree freedom pick-up mechanism, inverter circuit and the stability of the output voltage.First of all, this paper studies automatic positioning mechanism of the pick-up mechanism which enhances the flexibility of the pick-up mechanism. Secondly, in order to reduce the energy loss, soft-switching inverter circuit is achieved through the improvement of the primary circuit of the ICPT system. Finally, though the analysis of chopper control mechanism, the output voltage active control method which is adjusted by the input voltage is proposed. These are able to enhance the stability and effectiveness of the ICPT system and lay a solid foundation for practical application of the ICPT technology.At last, the paper gives the simulation results of the related parameters of voltage stability circuit and soft switching inverter circuit of a push-pull ICPT system by the simulation software Matlab / Simulink. The simulation results provide a reference for the design of the device parameters. Then experimental circuits are designed according to the theoretical analysis and simulation model of the multi-degree freedom ICPT system. The key parameters of voltage stability circuit, soft switching inverter circuit and the multi-degree freedom pick-up mechanism of the multi-degree freedom ICPT system are measured. The experimental results verify the validity of the theoretical analysis and simulation results.