A novel platform for power train model of electric cars with experimental validation using real-time hardware in-the-loop (HIL): A case study of GM Chevrolet Volt 2nd generation

Abstract

This paper presents a novel platform for accurate mathematical modeling of electric cars' propulsion system. It provides, for the first time, a Hardware in-the-Loop (HIL) real-time experimental verification for a case study of GM Chevrolet Volt for both power and control parts in addition to the mechanical part. The novelty of this work can be split into three steps; first, each component of the power-train is accurately modeled taking transient dynamics of all parts of the electric vehicle (EV) into consideration. Secondly, a PSIM simulation platform is consequently developed, to demonstrate the validity of this mathematical modeling. Finally, the Typhoon HIL is used to provide the experimental verification of the proposed model in real-time, which precisely validate the viability of the model. The HIL technology is used to prototype and test the control proposed system while simulating the power circuit on the HIL module platform. The Permanent Magnet Synchronous Motor (PMSM) and the Power Electronics hardware components are simulated in real-time at which the parameters can be changed while the simulation is running. However, the control algorithm is generated as a C code and downloaded to the TI controller that exists on a Digital Signal Processing (DSP) board. The results from the simulation based on PSIM environment and hardware validations using HIL are in agreement, which validates the developed model. The performance has been investigated under different load operating conditions in real-time to verify its robustness. The case study can be extended for any electric car as it provides a generic platform for modeling any propulsion system.