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电机的极数说明了什么

时间:2020-08-24 来源:豫通电机

在工厂中,经常听到说:“电机是几极的?”


要想弄明白,首先要知道“极”是什么概念:“极” 指的是发电机转子在转子线圈通入励磁电流之后形成的磁极。简单地说就是转子每转一圈在定子的线圈的一匝中能感应形成几个周期电流,不同的极数要产生50hz电势就需要不同的转速。


欧冠杯下注 (50HZ*60MIAO/FEN(JI3000)CHUYIJISHUJIUSHIDIANJIMEIFENZHONGZHUANDEQUANSHU )

JISHUFANYINGCHUDIANDONGJIDETONGBUZHUANSU。2JITONGBUZHUANSUSHI3000r/min,4JITONGBUZHUANSUSHI1500r/min,6JITONGBUZHUANSUSHI1000r/min,8JITONGBUZHUANSUSHI750r/min。


电机的极数确定了电机的同步转速。


LI:4JIDIANJI

欧冠杯下注 4JIDIANJIDIANJI1FENZHONGTONGBUZHUANSU={DIANYUANDEPINLV(50Hz)×60MIAO}÷(DIANDONGJIDEJISHU÷2)=3000÷2=1500ZHUAN

KEYIZHEIYANGLIJIE:2JISHIJISHU(WEI3000),4JIJIUZHINENGCHU2,6JIJIUCHU3,8JIJIUCHU4。ERBUSHISHUO2JIHAIYAOYONG3000QUCHU2。

DIANDONGJIDEJIDUISHUYUEDUO,DIANJIDEZHUANSUJIUYUEDI,DANTADENIUJUJIUYUEDA。


在选用电机时,您要考虑负载需要多大的起动扭矩。

欧冠杯下注 BIRU:XIANGDAIFUZAIQIDONGDEJIUBIKONGZAIQIDONGDEXUYAONIUJUJIUDA。RUGUOSHIDAGONGLVDAFUZAIQIDONG,HAIYAOKAOLVJIANGYAQIDONG(HUOXINGSANJIAOQIDONG);ZHIYUZAIJUEDINGLEDIANJIJIDUISHUHOUHEFUZAIDEZHUANSUPIPEIWENTI,ZEKEKAOLVYONGBUTONGZHIJINGDEPIDAILUNLAICHUANDONGHUOYONGBIANSUCHILUN(CHILUNXIANG)LAIPIPEI。RUGUOYOUYUJUEDINGLEDIANJIJIDUISHUHOUJINGGUOPIDAIHUOCHILUNCHUANDONGHOUDABUDAOFUZAIDEGONGLVYAOQIU,NEIJIUYAOKAOLVDIANJIDESHIYONGGONGLVWENTILE。

欧冠杯下注 SANXIANGJIAOLIUDIANJIZHUYAOSHIYOUDINGZIHEZHUANZIZUCHENGDE。DANGDINGZIZHONGTONGRUSANXIANGJIAOLIUDIANSHI,HUICHANSHENGXUANZHUANCICHANG。CICHANGZONGSHIYOULIANGGEJI(YEKEYISHUOCHENGDUICHUXIANDE),JINJI(BEIJI)HESJI(NANJI),YECHENGWEIYIGEDUIJI。DANGJIAOLIUDIANJIDINGZIRAOZUDERAOZHIFANGSHIBUTONGSHI,CHANSHENGDEXUANZHUANCICHANGDECIJISHUSHIBUTONGDE。CIJISHUZHIJIEYINGXIANGDIANJIDEZHUANSU,TAMENDEGUANXISHISHI:TONGBUZHUANSU=60×PINLV/JIDUISHU。RUODIANJIDETONGBUZHUANSU1500ZHUAN/FEN,ZEGENJUSHANGSHIKEYISUANCHUJIDUISHUSHI2,JISHI4JIDIANJI。TONGBUZHUANSUHEJIDUISHUDOUSHIDIANJIDEJIBENCANSHU,ZAIDIANJIDEMINGPAISHANGDOUKEYICHADAO。YINWEIJIDUISHUKEYIYINGXIANGDAODIANJIDEZHUANSU,KEYILIYONGGAIBIANDIANJIDEJIDUISHUGAIBIANDIANJIDEZHUANSU。

欧冠杯下注 DUIYUFENGJI、SHUIBENGLEILIUTIXINGFUZAI,DUIXIANKUANGTUBIANCHANSHENGDEZULIHENDA。SUIRANYAOTUIDONGZHEILEIFUZAIBIANHUAXUYAODEZHUANJUBINGBUGAO,DANXIANGYAOJIAOKUAISUGAIBIANXIANZHUANGJIUXUYAOHENDADENENGLIANG,JIUYOUDIANRUTONGSHAOSHUIYIYANG,XIAOHUOYENENGSHAOKAI,YAOHENKUAISHAOKAIKENENGYAOQIUDEHUOJIUHUIHENDA。

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选择极数方法

BIRUSHUIBENGDIANJIDEXUANZE:JISHUDEXUANZEYINGGAIGENJUSHUIBENGDEEDINGZHUANSUXUANQU,2900r/minXUAN2JI,1450r/minXUAN4JI,970r/minXUAN6JIDENG。

DIANJIDEGONGLVDAYUEDENGYUSHUIBENGGONGLVCHUSHUIBENGXIAOLVCHUDIANJIXIAOLV。BIRUDIANJIXIAOLVSHI0.85,DUIYINGDEDIANJIGONGLVFENBIESHI5.5KW,15KW,ZHUANSUSHI2900,NEIMEDIANJIFENBIESHI5.5KW-2PHE15KW-2P,DIANJIDEZHUANSU=(PINLV×60S÷DIANJIDEJIESHU)×2