基于车载燃料电池过氧比的空气流量控制

发布时间：2018-02-09 01:23

本文关键词： 车载燃料电池过氧比最优调节器空气流量　出处：《可再生能源》2017年02期 　论文类型：期刊论文

【摘要】：车载燃料电池阴极空气流量控制是保证系统高效工作的重要条件之一,过氧比参数用于衡量空气流量的供给状况,文章分析了在不同电堆电流下系统的过氧比特性,研究了电堆工作温度以及膜含水量对最佳过氧比的影响,研究结果表明,最佳过氧比不受膜含水量的影响,而电堆工作温度对最佳过氧比有微弱的影响。为保证系统工作在最佳过氧比,采用最优过氧比调节器+模糊控制的策略,根据电堆电流及相应的最佳过氧比,利用前馈控制得到压缩机空气流量参考值,然后利用模糊控制器改变电动机电压控制压缩机空气流量。仿真结果表明,该控制方法具有良好的动、静特性。
[Abstract]:The cathode air flow control is one of the important conditions to ensure the high efficiency of the system. The parameters of the superoxide ratio are used to measure the supply of air flow. In this paper, the characteristics of the superoxide ratio of the system under different electric stack currents are analyzed. The effects of the working temperature of the stack and the water content of the membrane on the optimum peroxidation ratio are studied. The results show that the optimum peroxidation ratio is not affected by the water content of the membrane. In order to ensure the optimal superoxide ratio, the fuzzy control strategy of the optimal superoxide ratio regulator is adopted, according to the stack current and the corresponding optimum peroxy ratio, The reference value of compressor air flow is obtained by feedforward control, and the air flow rate of compressor is controlled by fuzzy controller. The simulation results show that the control method has good dynamic and static characteristics.
【作者单位】：中车青岛四方机车车辆股份有限公司;西南交通大学电气工程学院;
【基金】：国家科技支撑计划(2014BAG08B01)
【分类号】：TM911.4

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