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2. Optimal Control Strategy Design Based on Dynamic Programming for a Dual-Motor Coupling-Propulsion System

Author

Shuo Zhang, Wang Qinghui, Zhang Chengning, and Han Guangwei

Subjects
Energy loss, Electric bus, Article Subject, Computer science, lcsh:T, Control (management), lcsh:R, lcsh:Medicine, General Medicine, Models, Theoretical, Propulsion, Optimal control, lcsh:Technology, General Biochemistry, Genetics and Molecular Biology, Dual (category theory), Dynamic programming, Coupling (computer programming), Control theory, Programming Languages, lcsh:Q, lcsh:Science, Algorithm, Research Article, General Environmental Science
Abstract

A dual-motor coupling-propulsion electric bus (DMCPEB) is modeled, and its optimal control strategy is studied in this paper. The necessary dynamic features of energy loss for subsystems is modeled. Dynamic programming (DP) technique is applied to find the optimal control strategy including upshift threshold, downshift threshold, and power split ratio between the main motor and auxiliary motor. Improved control rules are extracted from the DP-based control solution, forming near-optimal control strategies. Simulation results demonstrate that a significant improvement in reducing energy loss due to the dual-motor coupling-propulsion system (DMCPS) running is realized without increasing the frequency of the mode switch.

Published
2014

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