Abstract
Accurate electric vehicle (EV) powertrain modeling, simulation and validation is paramount for critical design and control decisions in high performance vehicle designs. Described in this paper is a methodology for the design and development of EV powertrain through modeling, simulation and validation on a real-world vehicle system with detailed analysis of the results. Although simulation of EV powertrains in software simulation environments plays a significant role in the design and development of EVs, validating these models on the real-world vehicle systems plays an equally important role in improving the overall vehicle reliability, safety and performance. This modeling approach leverages the use of MATLAB/Simulink software for the modeling and simulation of an EV powertrain, augmented by simultaneously validating the modeling results on a real-world vehicle which is performance tested on a chassis dynamometer. The combination of these modeling techniques and real-world validation demonstrates a methodology for a cost effective means of rapidly developing and validating high performance EV powertrains, filling the literature gaps in how these modeling methodologies can be carried out in a research framework.
Highlights
The electric vehicle (EV) market continues to grow, with over seven million EVs on the road worldwide [1]
For equation-based modeling, the dynamics of vehicle motion represented in drive cycles and the vehicle systems must be formulated and implemented in the form of subsystems, blocks and signals within Simulink
EV powertrain andand simulation begins with the determination of key design specifications as detailed in Table 1,and adapted from the spec sheetwith of a Chevrolet
Summary
The electric vehicle (EV) market continues to grow, with over seven million EVs on the road worldwide [1]. MATLAB/Simulink software is a tool capable of modeling complete EV powertrains of different levels of fidelity and detail and has become an invaluable modeling platform. This software features a variety of shipped sample models for simulation of pure battery electric as well as hybrid electric vehicles of different configurations and types [12,13,14,15]. The authors describe the modeling and simulation steps for high performance EVs by defining key vehicle specifications and developing an equation-based model of a battery EV in MATLAB/Simulink software.
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