Dynamic Programming-Based Energy Management System for Range-Extended Electric BusReport as inadecuate




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Mathematical Problems in Engineering - Volume 2015 2015, Article ID 624649, 11 pages -

Research ArticleCollege of Electrical and Electronics Engineering, Harbin University of Science and Technology, Harbin, China

Received 28 August 2014; Accepted 27 September 2014

Academic Editor: Hui Zhang

Copyright © 2015 Xiaogang Wu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The heavy computational burden associated with the application of the traditional DP strategy to the energy management of range-extended electric buses poses a serious problem. On the basis of one Chinese typical urban bus driving cycle, an optimal control strategy is designed according to the SOC consumption trend, which is optimized by the DP algorithm. The dissipative energy and the energy-traction efficiency are our evaluation indices. The energy efficiencies of the powertrain system and components are analyzed by the energy flow diagram method. The results show that when the range-extended electric bus runs 35 Chinese typical urban bus driving cycles, the energy consumption and the energy efficiency of the powertrain system, which are optimized by the traditional DP strategy, can reach 2844.28 MJ and 31.29%, respectively. Compared with the traditional bus, the energy consumption can be reduced by 31.08%. The energy consumption and the energy efficiency of the powertrain system, which are based on one driving cycle optimal strategy, can reach 2857.69 MJ and 31.14%, respectively. The energy consumption is 0.47% higher than that with the traditional DP strategy, but the computation time is reduced by 96.85%.





Author: Xiaogang Wu, Jingfu Chen, and Chen Hu

Source: https://www.hindawi.com/



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