Title: Power distribution methods of ultra-capacitor/battery hybrid power source for vehicular applications

Authors: Benxiang Lin; Guizhou Ren

Addresses: School of Electromechanical and Automotive Engineering, Yantai University, 30 Qingquan Road, Laishan District, Yantai, 264005, China ' School of Electromechanical and Automotive Engineering, Yantai University, 30 Qingquan Road, Laishan District, Yantai, 264005, China

Abstract: The development of a high-efficiency hybrid power source (HPS) for electric vehicle (EV) faces a huge challenge. An HPS consisting of ultra-capacitor (UC) and battery is recognised as having strong potential to meet this challenge. This paper aims to provide a comprehensive and transparent description of the known power distribution control methods that are recently applied in various UC/battery HPSs. The paper starts with an overview of typical energy storage technologies for HPS. After that, the power distribution control methods of UC/battery HPS are analysed and discussed systematically, such as explicit rule-based, fuzzy rule-based, model prediction, dynamic programming (DP), convex optimisation, particle swarm optimisation (PSO), and genetic algorithm (GA). Following this, a new UC/battery HPS is proposed, its operation principle is described, rule-based and fuzzy-based power distribution methods are initially formulated. The results of a simulation example verify the validity of the designed scheme.

Keywords: ultra-capacitor/battery hybrid power source; series-parallel switching of UC banks; variable structure; two-level voltages output; variable bus voltage; power distribution; rule-based method; fuzzy-based method.

DOI: 10.1504/IJVD.2023.134725

International Journal of Vehicle Design, 2023 Vol.93 No.1/2, pp.87 - 119

Accepted: 22 Mar 2022
Published online: 09 Nov 2023 *

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