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A fast and parametric torque distribution strategy for four-wheel-drive energy-efficient electric vehicles

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posted on 2023-06-09, 17:20 authored by Arash Moradinegade DizqahArash Moradinegade Dizqah, Basilio Lenzo, Aldo Sorniotti, Patrick Gruber, Saber Fallah, Jasper De Smet
Electric vehicles (EVs) with four individually controlled drivetrains are over-actuated systems, and therefore, the total wheel torque and yaw moment demands can be realized through an infinite number of feasible wheel torque combinations. Hence, an energy-efficient torque distribution among the four drivetrains is crucial for reducing the drivetrain power losses and extending driving range. In this paper, the optimal torque distribution is formulated as the solution of a parametric optimization problem, depending on the vehicle speed. An analytical solution is provided for the case of equal drivetrains, under the experimentally confirmed hypothesis that the drivetrain power losses are strictly monotonically increasing with the torque demand. The easily implementable and computationally fast wheel torque distribution algorithm is validated by simulations and experiments on an EV demonstrator, along driving cycles and cornering maneuvers. The results show considerable energy savings compared to alternative torque distribution strategies.

History

Publication status

  • Published

File Version

  • Published version

Journal

IEEE Transactions on Industrial Electronics

ISSN

0278-0046

Publisher

Institute of Electrical and Electronics Engineers

Issue

7

Volume

63

Page range

4367-4376

Department affiliated with

  • Engineering and Design Publications

Research groups affiliated with

  • Dynamics, Control and Vehicle Research Group Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2019-03-21

First Open Access (FOA) Date

2019-03-21

First Compliant Deposit (FCD) Date

2019-03-20

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