A Standalone Energy Management System of Battery/Supercapacitor Hybrid Energy Storage System for Electric Vehicles Using Model Predictive Control

In this article, a standalone model predictive control (MPC) based energy management strategy (EMS) is proposed for the hybrid energy storage system in electric vehicles. The proposed EMS does not require any knowledge of vehicle speed or future demands, so it can be implemented as a standalone syst...

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Bibliographic Details
Published inIEEE transactions on industrial electronics (1982) Vol. 70; no. 5; pp. 5104 - 5114
Main Authors Nguyen, Ngoc-Duc, Yoon, Changwoo, Lee, Young Il
Format Journal Article
LanguageEnglish
Published New York IEEE 01.05.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Batteries
Battery
Cost function
Current control
DC-DC power converters
Electric potential
Electric vehicles
electric vehicles (EVs)
Energy management
energy management strategy (EMS)
Energy storage
hybrid energy storage system (HESS)
Hybrid systems
model predictive control (MPC)
Optimization
Predictive control
supercapacitor (SC)
Supercapacitors
Traction motors
Traffic speed
Tuning
Voltage
Voltage control
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Summary:In this article, a standalone model predictive control (MPC) based energy management strategy (EMS) is proposed for the hybrid energy storage system in electric vehicles. The proposed EMS does not require any knowledge of vehicle speed or future demands, so it can be implemented as a standalone system without interfacing with the motor drive system. Furthermore, only one tuning parameter is used to adjust the performance of the proposed MPC-based EMS. The cost function is made of the deviation of the predicted supercapacitor (SC) voltage from its desired value and the difference between the battery current and its steady-state value. Furthermore, the constraints on the battery current rate and the SC voltage will be enforced when solving the optimization problem of EMS. Based on the finite set of battery current references, the online optimal solution can be implemented in the experiment. Then, the fast convergent current control is designed to track the optimal current reference using a continuous control set MPC. To show the effectiveness of the proposed method, the comparison with the rule-based EMS will be presented in simulation and experiments.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2022.3186369