Real-time Energy Management Strategy for Oil-Electric-Liquid Hybrid System based on Lowest Instantaneous Energy Consumption Cost

Yang Yang, Zhen Zhong, Fei Wang, Chunyun Fu and Junzhang Liao
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Yang Yang: State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China
Zhen Zhong: State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China
Fei Wang: State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China
Chunyun Fu: State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China
Junzhang Liao: State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China

Energies, 2020, vol. 13, issue 4, 1-23

Abstract: For the oil–electric–hydraulic hybrid power system, a logic threshold energy management strategy based on the optimal working curve is proposed, and the optimal working curve in each mode is determined. A genetic algorithm is used to determine the optimal parameters. For driving conditions, a real-time energy management strategy based on the lowest instantaneous energy cost is proposed. For braking conditions and subject to the European Commission for Europe (ECE) regulations, a braking force distribution strategy based on hydraulic pumps/motors and supplemented by motors is proposed. A global optimization energy management strategy is used to evaluate the strategy. Simulation results show that the strategy can achieve the expected control target and save about 32.14% compared with the fuel consumption cost of the original model 100 km 8 L. Under the New European Driving Cycle (NEDC) working conditions, the energy-saving effect of this strategy is close to that of the global optimization energy management strategy and has obvious cost advantages. The system design and control strategy are validated.

Keywords: oil–electric–hydraulic hybrid system; lowest instantaneous energy costs; energy management; global optimization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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