Research On Passivity-Based Control Of Electric Vehicle Mobile Wireless Charging System Based On EL Model

Xin Li; Lesheng Xing

doi:10.6180/jase.202305_26(5).0011

Research On Passivity-Based Control Of Electric Vehicle Mobile Wireless Charging System Based On EL Model

Xin Li¹ and Lesheng Xing This email address is being protected from spambots. You need JavaScript enabled to view it.²

¹School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
²School of Automation and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

Received: January 4, 2022
Accepted: June 22, 2022
Publication Date: August 19, 2022

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202305_26(5).0011

ABSTRACT

In view of the large fluctuation of the output current of the charging system caused by the mutual inductance perturbation of the coupling mechanism and the load disturbance of the vehicle power battery in the process of mobile wireless charging of electric vehicles, a passivity-based control strategy of the mobile wireless charging system based on EL (Euler Lagrange) model is proposed to realize the constant current charging of electric vehicles. Firstly, the working principle of D-LCC mobile wireless charging system is analyzed. Based on the dynamic model of mobile wireless charging system and the large signal model in rotating coordinate system, the EL model is obtained by using the mutual inductance coupling theory. Then, the passivity-based controller (PBC) based on the EL model is designed from the perspective of energy, and the passive stability of the system is analyzed. Finally, the proposed control strategy is verified based on MATLB / Simulink simulation platform and compared with the traditional PI controller. The simulation results show that PBC controller has stronger robustness than PI controller in the case of external disturbance.

Keywords: Passivity-based control, D-LCC compensation, robustness, Constant current charging

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