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IGCT阴极图形排布的优化设计 被引量:1
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作者 程银华 陈芳林 彭文华 《大功率变流技术》 2010年第4期5-8,共4页
简单分析了集成门极换流晶闸管(IGCT)门-阴极结构和工作原理,并在原有均匀矩形排布和均匀圆周排布的阴极图形基础上提出了一种新的排布方式——梳条分区复合排布。它不仅增加了IGCT阴极的有效面积,增大了电流容量,而且减小了热阻,改善... 简单分析了集成门极换流晶闸管(IGCT)门-阴极结构和工作原理,并在原有均匀矩形排布和均匀圆周排布的阴极图形基础上提出了一种新的排布方式——梳条分区复合排布。它不仅增加了IGCT阴极的有效面积,增大了电流容量,而且减小了热阻,改善了门极电流通道。 展开更多
关键词 IGCT 梳条 分区复合
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对多层电介质存在时电容器性质的探讨 被引量:1
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作者 曲红斌 雷桂林 《甘肃联合大学学报(自然科学版)》 2004年第3期40-42,共3页
首先,探讨了电容器中存在多种电介质分层、分区排布时电容器的电容;最后,还介绍了电容器中既有分层排布的电介质,也有分区排布的电介质的电容,这些其它文献中都没有讨论.
关键词 多层电介质 分层 分区排布 电容器串联 电容器并联 电磁学
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Study on the Regional Distribution of Energy Efficiency from the Point of Pollutant Emissions
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作者 Shen Neng 《Chinese Journal of Population,Resources and Environment》 2011年第3期58-65,共8页
In this paper, the author uses super-efficiency DEA model to measure the national and regional energy efficiency in China; using spatial econometric model and from the perspective of geo-spatial spillover, the author ... In this paper, the author uses super-efficiency DEA model to measure the national and regional energy efficiency in China; using spatial econometric model and from the perspective of geo-spatial spillover, the author interprets the spatial characteristies of energy efficiency and extracts the main factors that influ- ence the regional energy efficiency. The analysis results show that: (1) the national and regional energy efficiency is consistent with inverted U-shaped curve, and the nationwide energy efficiency gap is increasing; (2) energy efficiency has the obvious effect of the spatial external effect, and when the government makes energy saving strategies, inter-regional energy cooperation and the prolif- eration of advanced production technology should be given more priority; (3) energy efficiency has significant negative correlation with government intervention, industrial structure, ownership structure, the energy consumption structure, and resource endowments, and has positive correlation with the degree of opening-up and energy price. 展开更多
关键词 energy efficiency undesirable output space dependence
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