Embedded Real-Time Nonlinear Model Predictive Control for the Thermal Torque Derating of an Electric Vehicle

IFAC-PapersOnLine, vol. 54, pp. 359–364

Abstract

This paper presents a real-time capable nonlinear model predictive control (NMPC) strategy to effectively control the driving performance of an electric vehicle (EV) while optimizing thermal utilization. The prediction model is based on an experimentally validated two-node lumped parameter thermal network (LPTN) and one-dimensional driving dynamics. An efficient solver for the trajectory tracking problem is exported using acados and deployed on a dSPACE SCALEXIO embedded system. The lap time of a high-load driving cycle compared to a state-of-the-art derating strategy improved by 2.56% with an energy consumption reduction of 2.43% while respecting the temperature constraints of the electric drive.

Authors 7

1. Alexander Winkler corresponding Aachen

   RWTH Aachen University

   Affiliation as printed

   Teaching and Research Area for Mechatronics in Mobile Propulsion - RWTH Aachen University, Forckenbeckstraße 4, 52074 Aachen, Germany

2. Jonathan Frey corresponding

   University of Freiburg

   Affiliation as printed

   Department of Microsystems Engineering, Albert-Ludwigs-University of Freiburg, Georges-Köhler-Allee 103, 79110 Freiburg, Germany

3. Timm Fahrbach Aachen

   RWTH Aachen University

   Affiliation as printed

   Teaching and Research Area for Mechatronics in Mobile Propulsion - RWTH Aachen University, Forckenbeckstraße 4, 52074 Aachen, Germany

4. Gianluca Frison

   University of Freiburg

   Affiliation as printed

   Department of Microsystems Engineering, Albert-Ludwigs-University of Freiburg, Georges-Köhler-Allee 103, 79110 Freiburg, Germany

5. René Scheer Aachen

   RWTH Aachen University

   Affiliation as printed

   Teaching and Research Area for Mechatronics in Mobile Propulsion - RWTH Aachen University, Forckenbeckstraße 4, 52074 Aachen, Germany

6. Moritz Diehl corresponding

   University of Freiburg

   Affiliation as printed

   Department of Microsystems Engineering, Albert-Ludwigs-University of Freiburg, Georges-Köhler-Allee 103, 79110 Freiburg, Germany

7. Jakob Andert corresponding Aachen

   RWTH Aachen University

   Affiliation as printed

   Teaching and Research Area for Mechatronics in Mobile Propulsion - RWTH Aachen University, Forckenbeckstraße 4, 52074 Aachen, Germany