Research On Parameter Identification And Control Simulation Of Inductively Coupled Power Transfer System

Inductively coupled power transfer technology which referred to ICPT technology is a novel power transfer technology based on the principle of electromagnetic induction. ICPT system has realized power transmission between primary and pick-up through high frequency magnetic field. ICPT technology is an important supplement of traditional power transmission. ICPT technology has broad application prospects with its advantages of high reliability, high safety and low cost.The SP type ICPT system is chosen as the research object, its basic working principle is analyzed. The state space model of the SP type ICPT system is established with using Kirchhoff’s current and voltage law. The model simulation is used to verifying the correctness of the state space model.A novel technique for parameter identification of the SP type ICPT system is presented by using parallel chaotic optimization. The problem of parameter identification of ICPT system is converted into an optimization problem, and a parallel chaos optimization algorithm is introduced to solve the problem. The system parameters are identified through the MATLAB simulations.A bilateral control strategy is proposed for the stability transmission and the stability pick up of the energy of the SP type ICPT system. The phase shift control and boost chopper control are introduced. Two independent closed-loop control systems based on intelligent subsection control are designed. The bilateral control strategy is realized through simulation in MATLAB/Simulink. The effectiveness of intelligent subsection control is verified by comparing with PID control.A method of zero current soft switching and voltage control is proposed for the energy transmission efficiency and the stability pick up of the SP type ICPT system. Two independent closed-loop control systems are designed. The primary closed-loop control system is designed to realize zero current soft switching control. The pick-up closed-loop control system is designed to realize output voltage control. The application range of the load is obtained through analyzing the impedance of SP type ICPT system. The control principle of soft switching and voltage control is presented. On the pick-up system, the fuzzy PID controller is designed, which does not depend on the mathematical model of the controlled object and has good robustness. The effectiveness of the control method is verified through the simulations.