System Dynamics Analysis and Mode-Switch Control for a 3-Mode Range-Extender Electric Vehicle

Abstract:

This paper studies the system modeling and mode-switch control for a novel 3-mode (serial/parallel/pure electric) range-extender electric vehicle (REEV). The REEV is modeled with low-order dynamics of 8 subsystems: the driving pattern, drivers behavior, lithium batteries, a spark-ignition engine, a traction motor, a generator, a 6-speed transmission, and a longitudinal vehicle dynamics. Dynamics of the REEV is the integration of above subsystems. To properly evaluate the system performance of the REEV, a rule-based mode-switch control rule is designed with 7 operation modes (System Ready, EV, Serial, Coast Down, Coast-Down Regen., Idle Regen., Parallel). By applying the control rules for the 3-mode REEV, the vehicle can properly operate. Simulation is conducted on the Matlab/Simulink platform. The results show that this study details the system dynamics of subsystems and the vehicle. Meanwhile the rule-based control strategy governs the subsystems well. The developed simulator can be utilized for specification designs of real vehicles and for vehicle control unit designs in the near future.

• Periodical: Applied Mechanics and Materials (Volume 459)
• Pages: 361-367
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.459.361
• Online since: October 2013
• Authors: Yi Hsuan Hung*, Chien Hsun Wu, Chun Ying Lin, Yu Ming Tung
• Keywords: Electric Vehicle (EV), Range Extender, System Modeling

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