Real-Time Mixed-Integer Energy Management Strategy for Multi-Motor Electric Vehicles
Paper in proceeding, 2023

This paper11This work was supported by the Sweden's Innovation Agency (Vinnova) under Grant 2017-05506. presents a real-time capable energy management strategy for multi-motor electric vehicles, based on mixed-integer model predictive control (MI-MPC). In this strategy, torque allocation and clutch on-off are co-optimized to minimize both the energy consumption and the frequent changes in clutch engagement status. To be able to solve the mixed-integer (MI) problem in real time, we propose a bi-level programming approach in which the torque allocation subproblem is solved at the inner level using an explicit closed-form analytical solution, while the integer decisions are optimized at the outer level using implicit dynamic programming (i-DP). The simulation results show that the proposed strategy can achieve up to 11 % energy savings, depending on the load demand in a driving mission, compared to a rule-based controller typically used in production vehicles. In addition, the proposed approach is guaranteed to find the global optimum for the MI problem in each MPC update. With a mean time to solution of around 4.6 ms, the proposed strategy shows promising real-time capabilities for online implementation in multi -motor electric vehicles.

Author

Anand Ganesan

Volvo

Chalmers, Electrical Engineering, Systems and control

Nikolce Murgovski

Chalmers, Electrical Engineering, Systems and control

Derong Yang

Volvo

Sebastien Gros

Norwegian University of Science and Technology (NTNU)

2023 IEEE Transportation Electrification Conference and Expo, ITEC 2023


9798350397420 (ISBN)

2023 IEEE Transportation Electrification Conference and Expo, ITEC 2023
Detroit, USA,

A new generation of algorithms for modern powertrain control

VINNOVA (2017-05506), 2018-09-01 -- 2024-12-31.

Subject Categories

Vehicle Engineering

Control Engineering

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/ITEC55900.2023.10186957

More information

Latest update

11/7/2023