Global Optimization Design of Inductively Coupled Power Transfer System Parameter

Inductively coupled power transfer system has the characteristics of multi-parameters, non-linearity and strong coupling. Traditional parameter optimization methods generally adopt a non-linearity evaluation function. However, due to the different change rate and non-linearity degree of each objective function, the various objective functions constitute the evaluation function are not necessarily globally optimal in the feasible range. In this paper, by optimizing the resonant frequency and mutual inductance, and adopting the linearity-weighted-sum method of multi-objective global optimization, the parameters of output power, transmission efficiency and capacitor voltage stress of inductively coupled power transmission system are designed as objective functions to achieve global optimization. Finally, the reliability and validity of the optimization method are verified by theoretical calculation and simulation experiments.