内蒙古民族大学本科毕业论文--编号：069050241016本科毕业论文题目：三项交流电中的功率学院：物理与电子信息学院专业：电子信息技术与科学年级：06电子一班姓名：王国庆指导老师：赵连成完成日期：2010.5.22TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc262454794"目录中文摘要·········································2英文摘要·······································3引言···········································4二.三相电路··································42.1三相交流电路的定义····························42.2三相交流电的应用····························52.3三相交流电特点及产生·························62.4三相交流发电机······························7三.三相电路的变量·····························73.1三相电源······························73.2三相电源的星形联接······················113.3三相电源的三角形联接······················123.4三相负载星形联接的三相电路···················143.5三相负载三角形联接的三相电路················15四.三相电路的功率···························154.1概念·······························154.2表达式······························164.3基本特性······························17五.三相电路功率的计算·························175.1三相电路的二项计算························175.2二表法测三相三线制电路功率···················19结束语······································20参考文献·····································21致谢···································22个人简历··································23摘要三相交流电路是电工技术课程的基本教学内容，几乎所有的教材都采用功率的概念来分析三相交流电路的特性。长期以来，《电工技术》课程长期以教学。离不开三相交流电路环节构成。发电、输电、配电几乎都采用三相交流电的生产工具，在生产生活中应用最为广泛。本文通过对负载星形联接的三相电路及负载三角形联接的三相电路的分析，应用电路的基本定律找出电压与电流之间的关系，明确了电压与电流的关系，再求出三相功率。关键词：三相交流；负载；电压；电流；功率Abstract三相交流电路是电工技术课程的基本教学内容，几乎所有的教材都采用功率的概念来分析三相交流电路的特性。Three-phaseACelectricalcircuitisthebasictechnicalcoursesteachingcontent,almostallofthematerialshaveadoptedtheconceptofpowertoanalyzethethree-phaseACcircuitcharacteristics.长期以来，《电工技术》课程长期以教学。Foralongtime,"Electricaltechnology"coursealongtimetoteaching.离不开三相交流电路环节构成。Constituteapartofthree-phaseACcircuitcannotbeseparated.发电、输电、配电几乎都采用三相交流电的生产工具，在生产生活中应用最为广泛。Powergeneration,transmission,distributionalmostallthree-phaseACoftheproductiontoolsusedintheproductionlifeofthemostwidelyused.本文通过对负载星形联