Title: Research on an energy management strategy and energy optimisation of hydraulic hybrid power mining trucks

Authors: Hongliang Li; Denglin Zhu; Lihua Shang; Ping Fan

Addresses: College of Mechanical and Electrical Engineering, Hohai University, No. 200, Jinling North Road, Changzhou, Jiangsu, 213022, China; School of Mining and Coal, Inner Mongolia University of Science & Technology, No. 7, Alding Street, Baotou, Inner Mongolia, 014010, China ' College of Mechanical and Electrical Engineering, Hohai University, No. 200, Jinling North Road, Changzhou Jiangsu, 213022, China ' School of Economics and Management, Inner Mongolia University of Science & Technology, No. 7, Alding Street, Baotou, Inner Mongolia, 014010, China ' School of Automation, Northwestern Polytechnical University, Youyi Road 127, Xi'an, 710072, China

Abstract: A design scheme for a parallel hydraulic hybrid mining truck (HHMT) is proposed, and its energy management and energy consumption optimisation are studied. A rule-based energy management strategy is formulated, and a parallel optimisation scheme is proposed for the HHMT power system parameters and control parameters using orthogonal experimental design (OED) with fuel economy as the optimisation goal under open pit driving conditions to obtain the best parameter combination. The optimisation results are analysed to obtain the influence law of power system parameters, control parameters and driving condition changes on fuel consumption and energy storage/discharge. Simulation analysis shows that the actual vehicle speed can track the target vehicle speed very well. Compared with the original vehicle, this engine operates more in the fuel economy zone, with 11.39% lower fuel consumption. The simulation results verify the effectiveness of the energy management strategy and OED for fuel economy evaluation.

Keywords: HHMT; hydraulic hybrid mining truck; energy consumption optimisation; energy management strategy; parallel optimisation; power system parameters; control parameters; orthogonal test design; fuel economy; open-pit mine driving conditions; simulation analysis.

DOI: 10.1504/IJVD.2021.120414

International Journal of Vehicle Design, 2021 Vol.85 No.2/3/4, pp.246 - 273

Accepted: 20 Oct 2020
Published online: 19 Jan 2022 *

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