Motor shifting and torque distribution control of a multi-motor driving system in electric construction vehicles

Weikang Kong,Shuangshi Feng,Yuanying Cong,Dewen Kong,Jixin Wang

doi:10.1177/16878140211028446

Weikang Kong, Shuangshi Feng + Show 3 more

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https://doi.org/10.1177/16878140211028446

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Abstract

With the rapid development of the world economic construction and the shortage of energy, it has become a hot research issue to realize the electrification of the vehicle driving system and improve energy efficiency. Most of the electric construction machinery power systems are characterized by low speed and high load. The coordinated driving of multiple motors can increase the output torque and improve the transmission efficiency of the machine on the basis of a compact layout. A novel configuration of electric construction vehicles based on multi-motor and single-speed and its driving torque distribution control method is presented in this paper. The detailed mathematical model is established and the simulation analysis is carried out based on it. The results show that the proposed multi-motor driving system with the control strategy can improve the overall efficiency in the condition of ensuring the driving force when the parameter matching and motors choosing reasonably.

Highlights

In recent years, in order to achieve the goal of reducing greenhouse gas emissions from fossil fuel combustion and improving the overall efficiency of vehicles,[1] the development of vehicle electric transmission technology is changing rapidly, and the electrification proportion of construction machinery in the market is increasing year by year.[2]
The vehicle dynamics model and control model are established in MATLAB, and the simulation analysis is carried out based on the actual vehicle test data
The results show that the rotational speed, torque of each power source and the energy consumption verify the rationality of the modeling

Summary

Introduction

In order to achieve the goal of reducing greenhouse gas emissions from fossil fuel combustion and improving the overall efficiency of vehicles,[1] the development of vehicle electric transmission technology is changing rapidly, and the electrification proportion of construction machinery in the market is increasing year by year.[2]. Keywords Construction vehicles, torque distribution control, multi-motor drive, motor shifting, electric drive

Results

Conclusion