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Genetic algorithm with small population size for search feasible control parameters for parallel hybrid electric vehicles

1 Department of Information and Communication Engineering, Chaoyang University of Technology, Taichung, Taiwan
2 Department of Vehicle Engineering, National Taipei University of Technology, Taipei, Taiwan
3 School of Electrical and Electronic Engineering, Universiti Sains Malaysia, Penang, Malaysia

Topical Section: Electric and Hybrid Vehicles

The control strategy is a major unit in hybrid electric vehicles (HEVs). In order to provide suitable control parameters for reducing fuel consumptions and engine emissions while maintaining vehicle performance requirements, the genetic algorithm (GA) with small population size is applied to search for feasible control parameters in parallel HEVs. The electric assist control strategy (EACS) is used as the fundamental control strategy of parallel HEVs. The dynamic performance requirements stipulated in the Partnership for a New Generation of Vehicles (PNGV) is considered to maintain the vehicle performance. The known ADvanced VehIcle SimulatOR (ADVISOR) is used to simulate a specific parallel HEV with urban dynamometer driving schedule (UDDS). Five population sets with size 5, 10, 15, 20, and 25 are used in the GA. The experimental results show that the GA with population size of 25 is the best for selecting feasible control parameters in parallel HEVs.
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