（VFD）是應用(yong)變(bian)(bian)(bian)頻(pin)(pin)(pin)技(ji)術(shu)與微電子(zi)技(ji)術(shu)，通過改(gai)變(bian)(bian)(bian)電機(ji)(ji)工作電源(yuan)頻(pin)(pin)(pin)率方式來(lai)控(kong)制交流(liu)電動(dong)(dong)機(ji)(ji)的(de)電力控(kong)制設備(bei)。變(bian)(bian)(bian)頻(pin)(pin)(pin)器主(zhu)要由整流(liu)（交流(liu)變(bian)(bian)(bian)直流(liu)）、濾波、逆變(bian)(bian)(bian)（直流(liu)變(bian)(bian)(bian)交流(liu)）、制動(dong)(dong)單元(yuan)、驅動(dong)(dong)單元(yuan)、檢測單元(yuan)微處理單元(yuan)等組(zu)成。變(bian)(bian)(bian)頻(pin)(pin)(pin)器靠(kao)內部IGBT的(de)開斷(duan)來(lai)調整輸出(chu)電源(yuan)的(de)電壓(ya)和頻(pin)(pin)(pin)率，根(gen)據(ju)電進而達到節能、調速(su)的(de)目的(de)，另外，變(bian)(bian)(bian)頻(pin)(pin)(pin)器還有很多的(de)保(bao)護功能，如過流(liu)、過壓(ya)、過載保(bao)護等等。變(bian)(bian)(bian)頻(pin)(pin)(pin)器如何接(jie)線(xian)？這是很多人會(hui)碰到的(de)一個大問題，下(xia)面我們(men)來(lai)用(yong)圖(tu)解教大家快速(su)掌握簡單的(de)變(bian)(bian)(bian)頻(pin)(pin)(pin)器接(jie)線(xian)方法。

變(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)器(qi)(qi)(qi)(qi)工(gong)作原理：主電(dian)(dian)(dian)路(lu)是(shi)給異步電(dian)(dian)(dian)動機提(ti)供調壓調頻(pin)(pin)電(dian)(dian)(dian)源(yuan)(yuan)的(de)(de)電(dian)(dian)(dian)力變(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)換(huan)部分，變(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)器(qi)(qi)(qi)(qi)的(de)(de)主電(dian)(dian)(dian)路(lu)大體(ti)上可分為(wei)兩類(lei)：電(dian)(dian)(dian)壓型(xing)是(shi)將(jiang)(jiang)(jiang)電(dian)(dian)(dian)壓源(yuan)(yuan)的(de)(de)直流(liu)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)換(huan)為(wei)交流(liu)的(de)(de)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)器(qi)(qi)(qi)(qi)，直流(liu)回路(lu)的(de)(de)濾(lv)波(bo)是(shi)電(dian)(dian)(dian)容。電(dian)(dian)(dian)流(liu)型(xing)是(shi)將(jiang)(jiang)(jiang)電(dian)(dian)(dian)流(liu)源(yuan)(yuan)的(de)(de)直流(liu)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)換(huan)為(wei)交流(liu)的(de)(de)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)器(qi)(qi)(qi)(qi)，其直流(liu)回路(lu)濾(lv)波(bo)是(shi)電(dian)(dian)(dian)感。它由三部分構成，將(jiang)(jiang)(jiang)工(gong)頻(pin)(pin)電(dian)(dian)(dian)源(yuan)(yuan)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)換(huan)為(wei)直流(liu)功(gong)率的(de)(de)“整流(liu)器(qi)(qi)(qi)(qi)”，吸收在(zai)變(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)流(liu)器(qi)(qi)(qi)(qi)和逆變(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)器(qi)(qi)(qi)(qi)產生的(de)(de)電(dian)(dian)(dian)壓脈動的(de)(de)“平波(bo)回路(lu)”，以及將(jiang)(jiang)(jiang)直流(liu)功(gong)率變(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)換(huan)為(wei)交流(liu)功(gong)率的(de)(de)“逆變(bian)(bian)(bian)(bian)(bian)(bian)(bian)(bian)器(qi)(qi)(qi)(qi)”。

2、變頻器或控制柜內的控制線距離動力電(dian)纜至少(shao)100mm等等。

3、在購(gou)買變頻器(qi)的(de)時候都會有變頻器(qi)說明書。如果(guo)沒有的(de)話，您可以上您所(suo)購(gou)買的(de)品(pin)牌的(de)官方(fang)網站上去下載(zai)。變頻器(qi)說明書上面的(de)內容相當詳細，包括產品(pin)介紹、工作原理、安裝調試等(deng)等(deng)。

安徽得潤電氣技術有限(xian)公司(si)做為一(yi)家專業生產高(gao)低壓開關柜(ju)的(de)廠家，變(bian)頻器柜(ju)是我們公司(si)生產的(de)開關柜(ju)之一(yi)，所以對變(bian)頻器如何接線肯定了如指掌。