Optimal vehicle control strategy of a fuel cell/battery hybrid city bus
Optimal vehicle control strategy of a fuel cell/battery hybrid city bus
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DOI：
10.1016/j.ijhydene.2009.06.021
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发表时间：
2009-09
影响因子：
7.2
通讯作者：
Liangfei Xu;Jianqiu Li;Jianfeng Hua;Xiangjun Li;M. Ouyang
中科院分区：
文献类型：
--
作者：
Liangfei Xu;Jianqiu Li;Jianfeng Hua;Xiangjun Li;M. Ouyang
在本文中，提出了一种基于时间触发控制器局域网（TTCAN）系统的最佳车辆控制策略，用于聚合物电解质膜（PEM）燃料电池/镍氢（Ni-MH）电池供电的城市公交车。以提高城市客车燃油经济性为目标，控制策略包括等效消耗最小化策略（ECMS）和制动能量再生策略（BERS）。在引入包含充电维持系数的电池等效氢耗模型的基础上，给出了等效氢耗最小化问题的解析解。该策略已在2008年北京奥运会的多辆城市公交车上得到应用。“中国城市公交车典型循环”测试结果表明，与基于规则的策略相比，ECMS和BERS分别降低了氢消耗2.5%和15.3%。 BERS对燃油经济性的贡献比ECMS大得多，因为燃料电池系统在提高效率方面没有给最优算法留下太多空间。
In this article, an optimal vehicle control strategy based on a time-triggered controller area network (TTCAN) system for a polymer electrolyte membrane (PEM) fuel cell/nickel-metal hydride (Ni-MH) battery powered city bus is presented. Aiming at improving the fuel economy of the city bus, the control strategy comprises an equivalent consumption minimization strategy (ECMS) and a braking energy regeneration strategy (BERS). On the basis of the introduction of a battery equivalent hydrogen consumption model incorporating a charge-sustaining coefficient, an analytical solution to the equivalent consumption minimization problem is given. The proposed strategy has been applied in several city buses for the Beijing Olympic Games of 2008. Results of the “China city bus typical cycle” testing show that, the ECMS and the BERS lowered hydrogen consumption by 2.5% and 15.3% respectively, compared with a rule-based strategy. The BERS contributes much more than the ECMS to the fuel economy, because the fuel cell system does not leave much room for the optimal algorithm in improving the efficiency.