An improved parallel regenerative braking system for small battery electric vehicle
ISSN: 1708-5284
Article publication date: 31 May 2022
Issue publication date: 10 November 2023
Abstract
Purpose
The purpose of this paper is to design an improved parallel regenerative braking system (IPRBS) for electric vehicles (EVs) that increases energy recovery with a constant brake pedal feel (BPF).
Design/methodology/approach
The conventional hydro-mechanical braking system is redesigned by incorporating a reversing linear solenoid (RLS) and allowed to work in parallel with a regenerative brake. A braking algorithm is proposed, and correspondingly, a control system is designed for the IPRBS for its proper functioning, and a mathematical model is formulated considering vehicle drive during braking. The effectiveness of IPRBS is studied by analyzing two aspects of regenerative braking (BPF and regenerative efficiency) and the impact of regenerative braking contribution to range extension and energy consumption reduction under European Union Urban Driving Cycle (ECE).
Findings
IPRBS is found to maintain a constant BPF in terms of deceleration rate vs pedal displacement during the entire braking period irrespective of speed change and deceleration rate. The regenerative ratio of IPRBS is found to be high compared with conventional parallel regenerative braking, but it is quite the same at high deceleration.
Originality/value
A constant BPF is achieved by introducing an RLS between the input pushrod and booster input rod with appropriate controller design. Comparative analysis of energy regenerated under different regenerative conditions establishes the originality of IPRBS. An average contribution ratio to energy consumption reduction and driving range extension of IPRBS in ECE are obtained as 18.38 and 22.76, respectively.
Keywords
Acknowledgements
The corresponding author is thankful to the Indo-US Science and Technology Forum (IUSSTF), New Delhi, India for supporting this research under the Indo-US fellowship program (Award Letter Reference: IUSSTF Fellowships 2013/14).
Citation
Mondal, S. and Nandi, A.K. (2023), "An improved parallel regenerative braking system for small battery electric vehicle", World Journal of Engineering, Vol. 20 No. 6, pp. 1112-1127. https://doi.org/10.1108/WJE-02-2022-0067
Publisher
:Emerald Publishing Limited
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