Optimal Output Regulation for EV Dynamic Wireless Charging System via Internal Model-Based Control

This article proposes an effective optimal control method to achieve constant output voltage for the dynamic wireless charging (DWC) system subject to the time-varying mutual inductance caused by the movement of the electric vehicle (EV). Different from the existing literature, the induced voltage o...

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Bibliographic Details
Published inIEEE transactions on industrial electronics (1982) Vol. 71; no. 10; pp. 13031 - 13041
Main Authors Zhang, Mengting, Liu, Zhitao, Su, Hongye
Format Journal Article
LanguageEnglish
Published New York IEEE 01.10.2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Coils
Control methods
Control systems
Dynamic wireless charging (DWC)
Electric vehicle charging
Electric vehicles
Feedback control
Induced voltage
Inductance
internal model (IM) principle
Linear quadratic regulator
linear quadratic regulator (LQR)
Optimal control
optimal output regulation
output power fluctuation
Power generation
Receivers
Regulation
State feedback
Transient response
Voltage control
Wireless power transmission
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Summary:This article proposes an effective optimal control method to achieve constant output voltage for the dynamic wireless charging (DWC) system subject to the time-varying mutual inductance caused by the movement of the electric vehicle (EV). Different from the existing literature, the induced voltage of the receiver coil due to the mutual inductance fluctuation is treated as a sinusoid-like disturbance, which can be described by a predefined exosystem and be well compensated by an internal model (IM)-based controller. An optimal linear state feedback control scheme is developed using the IM-based output regulation theory and the linear quadratic regulator technique. Integral action is also introduced by state augmentation to eliminate the steady-state errors. Finally, comparisons among the proposed IM-based optimal state feedback controller and the conventional proportional-integral (PI) controller are conducted in the DWC experimental platform. The results verify the excellent performance of the proposed optimal control scheme in terms of fast transient response and the small output voltage fluctuation rate during the EV motion, which is drastically reduced to 0.67% compared with PI control.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2024.3352158