Research on Energy Distribution Strategy of Tandem Hybrid Tractor Based on the Pontryagin Minimum Principle

Rundong Zhou, Lin Wang, Xiaoting Deng (), Chao Su, Song Fang and Zhixiong Lu ()
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Rundong Zhou: College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
Lin Wang: State Key Laboratory of Intelligent Agricultural Power Equipment, Luoyang 470139, China
Xiaoting Deng: College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
Chao Su: College of Locomotive Vehicle, Nanjing Institute of Railway Technology, Nanjing 210031, China
Song Fang: College of Locomotive Vehicle, Nanjing Institute of Railway Technology, Nanjing 210031, China
Zhixiong Lu: College of Engineering, Nanjing Agricultural University, Nanjing 210031, China

Agriculture, 2024, vol. 14, issue 3, 1-17

Abstract: In order to study the energy distribution of the tandem hybrid tractor and achieve optimal fuel economy under the whole operating condition, an energy distribution strategy based on PMP (Pontryagin minimum principle) is proposed. The performance parameters of the relevant power components are obtained by constructing the test bench of the tandem hybrid tractor. At the same time, the mathematical model of energy distribution is established from the aspects of energy distribution objective function, state variable, and variable constraint. Based on the external characteristic test of the hub motor and the resistance analysis, the transport operation condition of the tractor is selected as the simulation target condition. The ADVISOR2002 and Simulink software are used to jointly simulate the three energy distribution strategies: the thermostat type, the power-following type, and the PMP type. The simulation results show that, compared with the other two, the fuel economy and battery power loss of the PMP-based energy distribution strategy are significantly improved. The fuel consumption per 100 km is decreased by 32.91% and 26.10%, respectively, which verifies the feasibility of the strategy. This study is of great significance for improving the production efficiency and reducing fuel consumption of hybrid tractors.

Keywords: tandem hybrid tractor; energy distribution; PMP; test bench; fuel consumption (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2024
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