（VFD）是(shi)應用(yong)變(bian)(bian)頻(pin)(pin)技術與微電(dian)子技術，通過改變(bian)(bian)電(dian)機(ji)工作電(dian)源頻(pin)(pin)率(lv)方式來控制(zhi)交流電(dian)動(dong)機(ji)的(de)(de)電(dian)力控制(zhi)設備。變(bian)(bian)頻(pin)(pin)器(qi)主(zhu)要由整流（交流變(bian)(bian)直(zhi)流）、濾(lv)波、逆變(bian)(bian)（直(zhi)流變(bian)(bian)交流）、制(zhi)動(dong)單(dan)元(yuan)、驅動(dong)單(dan)元(yuan)、檢(jian)測單(dan)元(yuan)微處理(li)單(dan)元(yuan)等(deng)組成。變(bian)(bian)頻(pin)(pin)器(qi)靠內部(bu)IGBT的(de)(de)開斷來調整輸出電(dian)源的(de)(de)電(dian)壓(ya)和頻(pin)(pin)率(lv)，根據電(dian)進而(er)達到(dao)節(jie)能、調速的(de)(de)目(mu)的(de)(de)，另外，變(bian)(bian)頻(pin)(pin)器(qi)還有很多的(de)(de)保(bao)護(hu)(hu)功(gong)能，如過流、過壓(ya)、過載保(bao)護(hu)(hu)等(deng)等(deng)。變(bian)(bian)頻(pin)(pin)器(qi)如何(he)接線？這是(shi)很多人會碰(peng)到(dao)的(de)(de)一個(ge)大問題，下面我(wo)們(men)來用(yong)圖解教大家快速掌握簡單(dan)的(de)(de)變(bian)(bian)頻(pin)(pin)器(qi)接線方法(fa)。

變(bian)(bian)頻(pin)(pin)器(qi)(qi)(qi)工作原理：主(zhu)電(dian)(dian)(dian)(dian)(dian)路(lu)是給異步電(dian)(dian)(dian)(dian)(dian)動機(ji)提供調壓(ya)調頻(pin)(pin)電(dian)(dian)(dian)(dian)(dian)源的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)力變(bian)(bian)換(huan)部分(fen)，變(bian)(bian)頻(pin)(pin)器(qi)(qi)(qi)的(de)(de)(de)(de)主(zhu)電(dian)(dian)(dian)(dian)(dian)路(lu)大體上可分(fen)為兩類：電(dian)(dian)(dian)(dian)(dian)壓(ya)型是將(jiang)電(dian)(dian)(dian)(dian)(dian)壓(ya)源的(de)(de)(de)(de)直(zhi)(zhi)流(liu)(liu)變(bian)(bian)換(huan)為交(jiao)流(liu)(liu)的(de)(de)(de)(de)變(bian)(bian)頻(pin)(pin)器(qi)(qi)(qi)，直(zhi)(zhi)流(liu)(liu)回路(lu)的(de)(de)(de)(de)濾波(bo)(bo)是電(dian)(dian)(dian)(dian)(dian)容(rong)。電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)型是將(jiang)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)源的(de)(de)(de)(de)直(zhi)(zhi)流(liu)(liu)變(bian)(bian)換(huan)為交(jiao)流(liu)(liu)的(de)(de)(de)(de)變(bian)(bian)頻(pin)(pin)器(qi)(qi)(qi)，其直(zhi)(zhi)流(liu)(liu)回路(lu)濾波(bo)(bo)是電(dian)(dian)(dian)(dian)(dian)感。它(ta)由三部分(fen)構成(cheng)，將(jiang)工頻(pin)(pin)電(dian)(dian)(dian)(dian)(dian)源變(bian)(bian)換(huan)為直(zhi)(zhi)流(liu)(liu)功率(lv)的(de)(de)(de)(de)“整流(liu)(liu)器(qi)(qi)(qi)”，吸收(shou)在變(bian)(bian)流(liu)(liu)器(qi)(qi)(qi)和逆變(bian)(bian)器(qi)(qi)(qi)產生的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)脈動的(de)(de)(de)(de)“平波(bo)(bo)回路(lu)”，以及將(jiang)直(zhi)(zhi)流(liu)(liu)功率(lv)變(bian)(bian)換(huan)為交(jiao)流(liu)(liu)功率(lv)的(de)(de)(de)(de)“逆變(bian)(bian)器(qi)(qi)(qi)”。

2、變頻器或控(kong)制柜內(nei)的(de)控(kong)制線距離(li)動力電纜至少(shao)100mm等等。

3、在(zai)購買(mai)(mai)變(bian)頻器的時(shi)候(hou)都會(hui)有變(bian)頻器說明書(shu)。如果沒有的話，您可以(yi)上(shang)您所購買(mai)(mai)的品牌的官方網站上(shang)去(qu)下(xia)載。變(bian)頻器說明書(shu)上(shang)面的內(nei)容(rong)相當詳細，包(bao)括產品介紹、工作原理、安裝調(diao)試等等。

安徽得潤電氣技(ji)術有限公(gong)司做為一(yi)家專業生產(chan)高低壓開關柜(ju)的(de)廠家，變頻器(qi)柜(ju)是(shi)我們公(gong)司生產(chan)的(de)開關柜(ju)之一(yi)，所以對變頻器(qi)如何接線(xian)肯定了如指掌。