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毕业论文:单绕组多速电动机的研究.doc

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毕业论文:单绕组多速电动机的研究.doc

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2222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormSelection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormSelection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahF第2页共74页单绕组多速电动机的研究摘要单绕组多速电动机,其转子为笼型绕组,通过改变定子绕组的接法,从而改变其极对数,达到调速的目的。具有结构简单、运行可靠、成本低廉等优点而被广泛应用。在恒定的频率下,改变电机定子绕组的极对数,就可以改变旋转磁场和转子的转速。通过利用改变绕组接法,使定子单绕组具备二种或三种极对数而得到二个或三个同步旋转磁场的转速。关键字电动机变极调速单绕组多速ItissingletoroundamanysoontheresearchoftheelectricmotorAbstractItissingletoroundamanysoonelectricmotor,itschangesthesonintothecagetypetoroundapurposefor,passingthechangessettlesthesonroundssetconnectingmethod,frombutchangingitspolelogarithms,attainingadjustingsoon.Havetheconstructionsimple,circulatedependable,cheapetc.incostadvantagebutdriveextensiveapplication.Underthefixedfrequency,changetheelectricalengineeringsettlethesonroundsasetpolelogarithms,canchangetorevolvethemagneticfieldwithturnthesonofturnsoon.Passingtheexploitationchangestoroundathesetconnectsthemethod,makingsettlethesonthesingleroundingthesethavetwokindsoforthreekindsofpoleslogarithmsbutgettwoorthreerevolvethemagneticfieldsynchronouslyofturnsoon.KeywordsElectricmotorChangingthepoleadjustssoonItissingletoroundthesetismanysoonormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormSelection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormSelection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahF第3页共74页前言单绕组多速异步电动机是一种只有一套定子绕组,通过外部接线变换获得多种转速的电动机。它属与有级调速设备,具有间单、可靠、高效及易于绕制的优点,在许多工业领域的变速拖动中有着广泛应用。YD系列变极多速三相异步电动机是Y(IP44)三相异步电动机的派生产品是现代JDO2系列变极多速三相异步电动机的更新换代产品。全系列11个机座号,9种速比,共103个规格。目前已鉴定定型批量生产的机座号为80180七个机座号,共65个规格。YD系列电动机的安装尺寸及外型尺寸、绝缘等级、防护等级、冷却方法、结构及安装型式、使用条件、额定电压、额定功率等均与Y系列(IP44)电动机相同。机座号与速比、功率的关系以及力能指标均与国际同类产品的先进水平相近。变极多速三相异步电动机由于具有可随负载性质的要求而分级地变化转速,从而达到功率的合理匹配和间化变速系统的特点。电动机用于各式万能、组合、专用切削机床以及矿山冶金、纺织、印染、化工、农机等部门需要调速的各种传动机构。编著者2004611ormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormSelection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormSelection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahF第4页共74页目录摘要1前言2一、技术要求4二、单绕组多速电动机的概况5三、定子绕组方案的确定及分析6四、多速电动机的变极调速原理及设计特点9(一)单绕组变极调速的基本原理9(二)单绕组多速异步电动机的设计特点13五、多速电动机的变极调速方法、功率和定子绕组结法及气隙磁密的相互关系16(一)单绕组变极电动机的转动方向问题17(二)不同的改接方法时,电动机功率及转矩的变化17(三)不同的改接方法时,电动机气隙的磁通密度的变化20六、电磁计算程序框图21ormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormSelection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormSelection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahF第5页共74页七、多速电动机电磁设计程序分析及电磁设计22(一)四极电磁设计程序分析及电磁设计22(二)二极电磁设计程序分析及电磁设计39八、结构设计57九、致谢58十、参考文献59附录一601、绕组展开图602、电机装配图613、电机转子图62附录二起动全过程特性曲线63一、技术要求1、课题名称单绕组多速电动机的研究2、设计要求①单绕组多速电动机的概况②定子绕组方案的确定及ormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormSelection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormSelection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahF第6页共74页分析③多速电动机的变极调速及设计特点④多速电动机电磁设计程序分析及电磁设计⑤了解和掌握三相单绕组多速电动机的变极调速方法、功率和定子绕组结法及气隙磁密的相互关系。3、技术指标1)型号YD132M4/22)功率6.5/83)额定电压380伏4)接法△/2Y5)绝缘等级B级6)效率84/807)功率因数0.85/0.898)过载能力1.8/1.89)转动转矩倍数1.7/1.810)起动电流倍数6.5/711)槽配合36/32二、单绕组多速电动机的概况ormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormSelection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormSelection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPoints2Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints2Selction.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahF第7页共74页单绕组多速异步电动机是利用改变定子绕组的接法,以改变电机的极数,从而使电机用一套绕组获得两种或两种以上转速的多速异步电动机。由于一般异步电动机正常运行时的转差率s都很小,电机的转速nn11s决定于同步转速n1。从pfn1160可见,在电源频率1f不变的情况下,改变定子绕组的极对数p,同步转速n1就发生变化,例如极对数增加一倍,同步转速就下降一半,随之电动机的转速,也约下降一半。显然,这种调速方法只能做到一级一级地改变转速,而不是平滑调速。变极电动机一般都用鼠笼式转子,因为鼠笼转子的极对数能自动地随着定于极对数的改变而改变,使定、转子磁场的极对数总是相等而产生平均电磁转矩。若为绕线式转于,则定子极对数改变时,转子绕组必须相应地改变接法以得到与定于相同的极对数,很不方便。要使定子具有两种极对数,容易想到的办法是用两套极对数不同的定子绕组,每次用其中一套,即所谓双绕组变极,显然,这是一个很不经济的办法,只在特殊情况下才采用。理想的办法是只装一套定子绕组而用改变绕组接法来获得两种或多种极对数,即所谓单绕组变极。其中倍极比情况如2/4极,4/8极等,和非倍极比如4/6极,6/8极等以及三速如4/6/8极等。

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