| 工作条件对铜包铝扁排导电性能的影响 |
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| 引用本文： | 罗奕兵,刘新华,谢建新.工作条件对铜包铝扁排导电性能的影响[J].北京科技大学学报,2009,31(11). |
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| 作者姓名： | 罗奕兵 刘新华 谢建新 |
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| 作者单位： | 北京科技大学新材料技术研究院,北京,100083 |
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| 基金项目： | 北京市科技计划项目，国家高技术研究发展计划(863计划) |
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| 摘 要： | 采用数值分析方法,分析工作温度、扁排与环境的换热量、载流量等工作条件对铜包铝扁排导电性能的影响. 结果表明:当扁排工作温度升高时,交流功率损耗增加的比值小于直流电阻增大的比例;当包覆层断面结构相同时,扁排可承载的平均电流密度随断面面积的增大而减小;采用单位长度直流电阻相同的铜包铝导电扁排替代铜扁排,在节省铜资源和原材料成本的同时,铜包铝扁排可承载的最大载流量增加,功率损耗和工作温度降低.
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| 关 键 词： | 包覆材料 导电排 导电性能 数值分析 |
Effects of running conditions on the conductivity of copper cladding aluminum flat bars |
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| LUO Yi-bing,LIU Xin-hua,XIE Jian-xin.Effects of running conditions on the conductivity of copper cladding aluminum flat bars[J].Journal of University of Science and Technology Beijing,2009,31(11). |
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| Authors: | LUO Yi-bing LIU Xin-hua XIE Jian-xin |
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| Institution: | LUO Yi-bing,LIU Xin-hua,XIE Jian-xin Advanced Materials , Technology Institute,University of Science , Technology Beijing,Beijing 100083,China |
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| Abstract: | The effects of running conditions such as operating temperature,heat exchange quality between bars and ambient,and current capacity on the conductivity of copper cladding aluminum (CCA) flat bars were analyzed by a numerical analysis method. The results show that the rate of power loss increasing is smaller than that of direct current resistance increasing due to operating temperature rising. When the sectional configuration of cladding layers is the same,the mean current density which CCA flat bars can car... |
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| Keywords: | cladding materials busbar conductivity numerical analysis |
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