由于整(zheng)流變繞(rao)組電(dian)流是(shi)非正弦的(de)(de)含有很(hen)多(duo)高(gao)次諧波(bo)，為了減小對電(dian)網的(de)(de)諧波(bo)污染，為了提(ti)(ti)高(gao)功率因數，必須提(ti)(ti)高(gao)整(zheng)流設(she)備的(de)(de)脈波(bo)數，這可(ke)以通過移相的(de)(de)方(fang)法來解決。移相的(de)(de)目(mu)的(de)(de)是(shi)使整(zheng)流變壓器二次繞組的同(tong)名端線電壓之間有一個相位(wei)移。

      簡單的(de)移相方法就是二次側采用量、角聯結(jie)的(de)兩個(ge)繞組，可以使整流電爐的(de)脈波數提高一倍。

　　對于(yu)大功率整流設(she)備，需要(yao)脈(mo)波(bo)數(shu)也較多(duo)，脈(mo)波(bo)數(shu)為18、24、36等應用的日益增多(duo)，這(zhe)就必須(xu)在整流變壓(ya)器一次側(ce)設(she)置移相繞組來進行(xing)移相。移相繞組與主繞組聯結方式有三(san)種(zhong)，即曲折線、六(liu)邊(bian)形和延邊(bian)三(san)角形。

　　用于(yu)電(dian)(dian)(dian)化(hua)(hua)學(xue)行業的(de)(de)整(zheng)流(liu)(liu)變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)的(de)(de)調(diao)壓(ya)(ya)(ya)范(fan)圍比電(dian)(dian)(dian)爐變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)要大的(de)(de)多，對于(yu)化(hua)(hua)工食鹽電(dian)(dian)(dian)解，調(diao)壓(ya)(ya)(ya)范(fan)圍通(tong)(tong)常是(shi)55％--105％，對于(yu)鋁電(dian)(dian)(dian)解來說，調(diao)壓(ya)(ya)(ya)范(fan)圍通(tong)(tong)常是(shi)5％--105％。常用的(de)(de)調(diao)壓(ya)(ya)(ya)方式如電(dian)(dian)(dian)爐變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)一(yi)樣(yang)有變(bian)(bian)磁通(tong)(tong)調(diao)壓(ya)(ya)(ya)，串(chuan)聯(lian)(lian)(lian)變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)調(diao)壓(ya)(ya)(ya)和(he)自(zi)(zi)耦調(diao)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)調(diao)壓(ya)(ya)(ya)。另外，由于(yu)整(zheng)流(liu)(liu)元件的(de)(de)特性(xing)，可(ke)以(yi)在整(zheng)流(liu)(liu)電(dian)(dian)(dian)爐的(de)(de)閥側(ce)直(zhi)接控(kong)制(zhi)硅整(zheng)流(liu)(liu)元件導通(tong)(tong)的(de)(de)相(xiang)位角度，可(ke)以(yi)平滑的(de)(de)調(diao)整(zheng)整(zheng)流(liu)(liu)電(dian)(dian)(dian)壓(ya)(ya)(ya)的(de)(de)平均值，這種調(diao)壓(ya)(ya)(ya)方式稱為相(xiang)控(kong)調(diao)壓(ya)(ya)(ya)。實現相(xiang)控(kong)調(diao)壓(ya)(ya)(ya)，一(yi)是(shi)采(cai)用晶閥管，二(er)是(shi)采(cai)用自(zi)(zi)飽和(he)電(dian)(dian)(dian)抗(kang)器(qi)(qi)(qi)(qi)，自(zi)(zi)飽和(he)電(dian)(dian)(dian)抗(kang)器(qi)(qi)(qi)(qi)基(ji)本上是(shi)由一(yi)個(ge)鐵心和(he)兩個(ge)繞(rao)(rao)組組成的(de)(de)，一(yi)個(ge)是(shi)工作繞(rao)(rao)組，它串(chuan)聯(lian)(lian)(lian)聯(lian)(lian)(lian)結在整(zheng)流(liu)(liu)變(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)二(er)次(ci)繞(rao)(rao)組與整(zheng)流(liu)(liu)器(qi)(qi)(qi)(qi)之間，流(liu)(liu)過負載電(dian)(dian)(dian)流(liu)(liu)；另一(yi)個(ge)是(shi)直(zhi)流(liu)(liu)控(kong)制(zhi)繞(rao)(rao)組，是(shi)由另外的(de)(de)直(zhi)流(liu)(liu)電(dian)(dian)(dian)源提供直(zhi)流(liu)(liu)電(dian)(dian)(dian)流(liu)(liu)，其主要原(yuan)理就是(shi)利用鐵磁材料的(de)(de)非線(xian)性(xing)變(bian)(bian)化(hua)(hua)，使工作繞(rao)(rao)組電(dian)(dian)(dian)抗(kang)值有很(hen)大的(de)(de)變(bian)(bian)化(hua)(hua)。調(diao)節直(zhi)流(liu)(liu)控(kong)制(zhi)電(dian)(dian)(dian)流(liu)(liu)，即可(ke)調(diao)節相(xiang)控(kong)角α，從而調(diao)節整(zheng)流(liu)(liu)電(dian)(dian)(dian)壓(ya)(ya)(ya)平均值。