Energy management strategy with regenerative-breaking recovery of mixed storage systems for electric vehicles
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1
Faculty of Sciences & Technology, University Mohammed El Bachir El Ibrahimi of Bordj Bou Arreridj, Algeria.
2
Ecole National Superieure des Technologies Avancées, Algeria.
These authors had equal contribution to this work
Corresponding author
Fouad Zebiri
Faculty of Sciences & Technology, University Mohammed El Bachir El Ibrahimi of Bordj Bou Arreridj, Algeria.
Power Electronics and Drives 2024;9 (44)
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ABSTRACT
This paper addresses the energy management strategy between batteries and ultracapacitors in a dual-propulsion urban electric vehicle (EV). The use of two propulsion machines proves advantageous for high-performance EVs facing spatial constraints. Al-locating load power requirements among the propulsion machines and energy storage components poses a significant challenge in this design. In this manuscript, the control strategy presents managing the energy flow between the converters and the two BLDCs motors via the DC link in order to maintain the energy demand of the EV coming from the dynamics of the latter. For this; Power control is carried out by a management algorithm; this management is based on the power requested/generated by the two machines (BLDCs), the state of charge of the batteries (SOCBat) and the state of charge of the ultracapacitors (SOCUC). The bidirectional DC-DC converter controlled with current to ensure the function of the motor or generator of the vehicle. We al-so integrate the controls of the DC bus and brushless DC motor. Additionally, the recovered energy during braking is stored in the battery or in the ultracapacitor depending on operating conditions.