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浅谈直流电机的调速方法

来源:子昂电机维修 日期:2018-03-07 15:08:23

  由于直流电(dian)(dian)动机(ji)具有低转速(su)(su)大力矩的(de)(de)特点(dian),是(shi)交流电(dian)(dian)动机(ji)无法取代的(de)(de), 因此(ci)(ci)调节直流电(dian)(dian)动机(ji)速(su)(su)度的(de)(de)设备具有广阔的(de)(de)应用天地。 直流电(dian)(dian)机(ji)的(de)(de)转速(su)(su)计(ji)算公式(shi)如(ru)下:n=(U-IR)/Kφ,其(qi)中U为电(dian)(dian)枢(shu)端电(dian)(dian)压,I为电(dian)(dian)枢(shu)电(dian)(dian)流,R为电(dian)(dian)枢(shu)电(dian)(dian)路总电(dian)(dian)阻,φ为每极磁(ci)通量(liang),K为电(dian)(dian)动机(ji)结构(gou)参数(shu)。由此(ci)(ci)公式(shi)了解到,直流电(dian)(dian)机(ji)调速(su)(su)有以下几种。

image.png

  1、实(shi)际使用(yong)中常采用(yong)直流调速(su)(su)器进行(xing)调速(su)(su):

  直流(liu)调速器就是调节(jie)直流(liu)电(dian)动(dong)机速度的设备(bei),上(shang)端(duan)和交(jiao)流(liu)电(dian)源连(lian)接,下(xia)端(duan)和直流(liu)电(dian)动(dong)机连(lian)接。

  2、直(zhi)流(liu)(liu)电机(ji)维修公司说,直(zhi)流(liu)(liu)调速(su)器将交流(liu)(liu)电转化成两(liang)路输(shu)出直(zhi)流(liu)(liu)电源(yuan),一路输(shu)入(ru)给(ji)直(zhi)流(liu)(liu)电机(ji)砺(li)磁(定子),一路输(shu)入(ru)给(ji)直(zhi)流(liu)(liu)电机(ji)电枢(转子)。

  3、直(zhi)流调速(su)器(qi)(qi)通过控(kong)制电(dian)(dian)枢直(zhi)流电(dian)(dian)压(ya)来调节(jie)直(zhi)流电(dian)(dian)动机(ji)(ji)转速(su)。同时直(zhi)流电(dian)(dian)动机(ji)(ji)给调速(su)器(qi)(qi)一个反(fan)馈电(dian)(dian)流,调速(su)器(qi)(qi)根据(ju)反(fan)馈电(dian)(dian)流来判断(duan)直(zhi)流电(dian)(dian)机(ji)(ji)的转速(su)情况,必要(yao)时修正电(dian)(dian)枢电(dian)(dian)压(ya)输(shu)出,以此来再(zai)次调节(jie)电(dian)(dian)机(ji)(ji)的转速(su)。

  以上就(jiu)是直(zhi)流电(dian)机(ji)维(wei)修公(gong)司介(jie)绍的直(zhi)流电(dian)机(ji)的调速(su)知识(shi),希望大家有所了解。


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