Complex output characteristics of wireless charging system will lead to significant changes in output characteristics due to time-varying and uncertain parameters

as well as external disturbances

which is very difficult to control the output of the wireless charging system. Aiming at the control problem of output for wireless charging system

firstly

the generalized state space averaging method is used to model the system and the state space equations of the whole circuit and the simplified circuit are obtained. Then

based on parameters perturbation of load and mutual inductance

the model is established according to the state space model

A robust H∞controller is designed and the stability analysis of the system is also carried out. Finally

the stability of the closed-loop control system is verified by simulation and experiments.