基于最小二乘法的感应电能无线传输系统负载辨识方法

A Load Identification Method for Inductive Power Transfer System Based on the Least Squares Algorithm

基于最小二乘法提出一种新型负载辨识方法,以PS结构电流型感应电能传输(IPT)系统为例,建立其非线性高阶微分方程并构建数据矩阵,通过最小二乘法获得系统的过程参数矢量,将负载辨识问题转换为系统参数辨识问题,完成系统的负载辨识,最后通过仿真及实验,验证了此方法的可行性。

Identifying load parameters is essential to establishing an efficient,reliable and stable inductive power transfer(IPT) system.Additionally,it is the key problem to achieve optimal efficiency tracking control.This paper focuses on the parallel-serial-(PS)-type current-fed IPT system and the data matrix can be constructed by setting up high order nonlinear differential equations of the system.The load identification problem is then transformed in to the system parameter identification problem,which is solved by the acquisition of the system process parameters vector based on the least squares algorithm.Finally,the simulations and the experiments can verify the feasibility of the proposed method.