A Novel Torque Matching Strategy for Dual Motor-Based All-Wheel-Driving Electric Vehicles

Hyeon-Woo Kim, Angani Amarnathvarma, Eugene Kim, Myeong-Hwan Hwang, Kyoungmin Kim, Hyunwoo Kim, Iksu Choi and Hyun-Rok Cha
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Hyeon-Woo Kim: Department of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Korea
Angani Amarnathvarma: Automotive Material & Component R&D Group, Korea Institute of Industrial Technology, Gwangju 61012, Korea
Eugene Kim: Automotive Material & Component R&D Group, Korea Institute of Industrial Technology, Gwangju 61012, Korea
Myeong-Hwan Hwang: Automotive Material & Component R&D Group, Korea Institute of Industrial Technology, Gwangju 61012, Korea
Kyoungmin Kim: Automotive Material & Component R&D Group, Korea Institute of Industrial Technology, Gwangju 61012, Korea
Hyunwoo Kim: Automotive Material & Component R&D Group, Korea Institute of Industrial Technology, Gwangju 61012, Korea
Iksu Choi: Department of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Korea
Hyun-Rok Cha: Automotive Material & Component R&D Group, Korea Institute of Industrial Technology, Gwangju 61012, Korea

Energies, 2022, vol. 15, issue 8, 1-16

Abstract: The market for electric vehicles is growing rapidly. Among them, the demand for a dual motor type 4 WD (Four -Wheel Driving) system is increasing. In this paper, we present the Torque Matching Strategy (TMS) method to select the optimal torque distribution ratio for dual motors. The TMS controller operates to set the optimal efficiency point by linearizing the drive efficiency combination of the two motors. Driving simulation and testing were performed through five drive cycles in the driver model interworking environment implemented in MATLAB and Carsim. The optimal distribution ratio was derived according to the front and rear gear ratios under the load condition, and the driving was verified by comparing it with the TMS control method. The efficiency was numerically verified by comparing the power loss of the driving motor. It reduced up to 34% in Urban Dynamometer Driving Schedule and up to 56.3% in Highway fuel efficiency test. The effectiveness of the TMS control method was demonstrated through the distribution rate trend based on the operation cycle and power loss.

Keywords: electric vehicles; dual motor; torque matching strategy; torque distribution; four wheel drive; four wheel drive (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: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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