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

机译:基于动态规划的双电动机耦合推进系统最优控制策略设计

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摘要

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.
机译:对双电动机耦合推进电动客车(DMCPEB)进行建模,研究了其最优控制策略。子系统能量损失的必要动态特征被建模。应用动态编程(DP)技术来找到最佳控制策略,包括升档阈值,降档阈值以及主电动机和辅助电动机之间的功率分配比。从基于DP的控制解决方案中提取了改进的控制规则,从而形成了接近最佳的控制策略。仿真结果表明,在不增加模式开关频率的情况下,在减少由于双电动机耦合推进系统(DMCPS)运行而导致的能量损失方面,有了显着的改进。

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