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地铁供变电及列车电气传动模型的建立与仿真
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作者 张必伟 《科技与企业》 2014年第20期167-167,共1页
地铁的供变电系统研究与列车电气传动模型建立和仿真是研究地铁运行可靠性和安全性的重要部分。本文从地铁供变电系统的组成和重要性以及供电方案等方面介绍了其供电系统,简述了列车电气传动系统的结构,并根据整个列车运行过程中能量流... 地铁的供变电系统研究与列车电气传动模型建立和仿真是研究地铁运行可靠性和安全性的重要部分。本文从地铁供变电系统的组成和重要性以及供电方案等方面介绍了其供电系统,简述了列车电气传动系统的结构,并根据整个列车运行过程中能量流动示意图对牵引网和换流站中整流和逆变等方面进行电气传统模型的建立以及使用Simulink动态软件进行仿真,得到了与实际测量数据较为符合的结果。 展开更多
关键词 城市轨道交通 供变电系统 电气传动模型
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Performance of a Double Catalyst Fuel Cell Cathode with a Tubular Oxygen Breathing and Preliminary Reduction Zone
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作者 Luís A.Waack BAMBACE Miriam NISHIMORI +1 位作者 Fernando M.RAMOS Demétrio BASTOS-NETTO 《Journal of Thermal Science》 SCIE EI CAS CSCD 2005年第2期187-192,共6页
This paper discusses a mathematical model for a liquid phase reacting flow occurring at the cathode of a patent pending novel fuel cell geometry, where a non homogeneous catalysis carried by gold and Prussian Blue, wi... This paper discusses a mathematical model for a liquid phase reacting flow occurring at the cathode of a patent pending novel fuel cell geometry, where a non homogeneous catalysis carried by gold and Prussian Blue, with the first reducing air O2 and the second the resulting H2O2. The breathing zone is porous walls microtubes, with three different types of pores in its walls. Inside the microtubes there is water solution of sulfuric acid. The microtubes possess an external layer of extremely porous polymer hydrophobic agent. A Prussian Blue thin porous layer is over the selective membrane. Appropriate porous and tubular connecting elements close the fluid loop. The asymmetry induces proper current and electric potential profiles, which leads to a mainly electrocapillary electrokinetic flow, which enhances the oxygen transport and assures the H2O2 flow to its reduction layer. 展开更多
关键词 non homogeneous catalysis fuel cell CATHODE electrokinetic convection breathing area.
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