Topology Selection And Performances Optimization For Inductive Coupled Power Transfer System Based On Unified Parameter Model

Inductive coupled power transfer(ICPT)technology is a near-distance wireless power transfer technology based on electromagnetic induction.The performance optimization methods of ICPT systems currently used in scientific research and engineering projects have many defects.First of all,for these methods,it is impossible to optimize multiple design goals at the same time,and it is difficult to play an ideal role in practical system design.Besides,it is a difficult problem in the performance optimization method of ICPT system that selecting the topology while designing the parameters.There are papers presenting the optimization strategy of the resonant compensation topology and the parameter design method based on the impedance analysis model.However,these topology optimization strategies are only to individually design parameters for each every resonant circuit,and every resonant network must be modeled separately to obtain expressions of performance indexes.As a result,their practicality are limited and they are unpractical in engineering problems.To select the best topology and optimize performances,this dissertation established a unified parameter model for resonant circuits based on impedance analysis method.Based on this model,a new topology optimization and multi-performance target optimization algorithm is proposed.The main research content includes the following aspects:(1)A unified parameter model that can be used to analyze multiple resonant circuits is established,and based on this model,the constant voltage characteristics of various resonant networks are analyzed.(2)A new topology optimization strategy is proposed.The strategy is based on the unified parameter model and can overcome the defects of the traditional topology optimization strategies.(3)For the ICPT system with multiple targets to be optimized,a multi-performance target optimization problem model is established,and a multi-performance target optimization method is proposed to solve the optimization problem model.The algorithm fully considers the efficiency,power,voltage gain,system robustness and other performance indexes,which makes it more practical.(4)Combining the new topology optimization strategy with the multi-objective optimization method,a comprehensive performance optimization method is proposed,which can search for the optimal resonant compensation topology while designing the resonant parameters of the system and maximize performances of the designed system.In order to verify the effectiveness of the proposed topology optimization strategy and multi-performance target optimization method,this dissertation optimized and designed an actual system based on basic requirements of the actual ICPT system,and analyzed the performance indexes.Finally,according to the results,an experimental setup was built,and the experimental results verified with the theoretical analysis were obtained,which demonstrates the effectiveness and superiority of the proposed topology optimization and multi-performance target optimization algorithms.