高壓(ya)變(bian)(bian)(bian)(bian)頻(pin)(pin)器是(shi)把工頻(pin)(pin)電(dian)(dian)(dian)(dian)源(50Hz或60Hz)變(bian)(bian)(bian)(bian)換(huan)成各種頻(pin)(pin)率(lv)的(de)(de)(de)交流(liu)(liu)電(dian)(dian)(dian)(dian)源，以實現電(dian)(dian)(dian)(dian)機的(de)(de)(de)變(bian)(bian)(bian)(bian)速(su)運行的(de)(de)(de)設備，其中控(kong)(kong)制電(dian)(dian)(dian)(dian)路(lu)完成對主電(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)控(kong)(kong)制，整流(liu)(liu)電(dian)(dian)(dian)(dian)路(lu)將(jiang)交流(liu)(liu)電(dian)(dian)(dian)(dian)變(bian)(bian)(bian)(bian)換(huan)成直流(liu)(liu)電(dian)(dian)(dian)(dian)，直流(liu)(liu)中間電(dian)(dian)(dian)(dian)路(lu)對整流(liu)(liu)電(dian)(dian)(dian)(dian)路(lu)的(de)(de)(de)輸(shu)出進(jin)行平滑濾波，逆變(bian)(bian)(bian)(bian)電(dian)(dian)(dian)(dian)路(lu)將(jiang)直流(liu)(liu)電(dian)(dian)(dian)(dian)再逆成交流(liu)(liu)電(dian)(dian)(dian)(dian)。對于(yu)如矢量控(kong)(kong)制高壓(ya)變(bian)(bian)(bian)(bian)頻(pin)(pin)器這種需要大(da)量運算的(de)(de)(de)高壓(ya)變(bian)(bian)(bian)(bian)頻(pin)(pin)器來(lai)說，APF有(you)源濾波裝置有(you)時(shi)還(huan)需要一個進(jin)行轉矩計算的(de)(de)(de)CPU以及一些相應的(de)(de)(de)電(dian)(dian)(dian)(dian)路(lu)。變(bian)(bian)(bian)(bian)頻(pin)(pin)調速(su)是(shi)通過(guo)改變(bian)(bian)(bian)(bian)電(dian)(dian)(dian)(dian)機定子繞組供(gong)電(dian)(dian)(dian)(dian)的(de)(de)(de)頻(pin)(pin)率(lv)來(lai)達(da)到調速(su)的(de)(de)(de)目的(de)(de)(de)。

　　高壓變頻器的作(zuo)用

　　一、高壓變(bian)頻器無故停(ting)機的真正原因可調的轉矩

　　通過變(bian)(bian)頻調(diao)速后，能(neng)夠(gou)設置相(xiang)應的轉矩 來保(bao)護機(ji)(ji)械不致損壞，從而保(bao)證工(gong)藝過程的連續性和(he)產品的可靠(kao)性。目前的變(bian)(bian)頻技術使得不僅轉矩 可調(diao)，甚(shen)至轉矩的控(kong)制精度都能(neng)達(da)到3%～5%左右。在工(gong)頻狀態下，電機(ji)(ji)只能(neng)通過檢測電流值或(huo)熱保(bao)護來進行控(kong)制，而無法像在變(bian)(bian)頻控(kong)制一樣設置 的轉矩值來動作。

　　二、受控的停止方式

　　如同可(ke)控的(de)加(jia)速(su)(su)一樣(yang)(yang), 在變頻調速(su)(su)中, 停(ting)止方(fang)式(shi)可(ke)以(yi)受控，并且有(you)不同的(de)停(ting)止方(fang)式(shi)可(ke)以(yi)選擇(減速(su)(su)停(ting)車(che)，自由停(ting)車(che)，APF有(you)源濾波裝置(zhi)減速(su)(su)停(ting)車(che)+直流(liu)制(zhi)動)，同樣(yang)(yang)它能(neng)減少(shao)對機械部(bu)件和電機的(de)沖擊，從而使整(zheng)個系統更加(jia)可(ke)靠，壽命也會相應增加(jia)。

　　三、節能

　　高壓變(bian)頻(pin)器節(jie)能(neng)(neng)主要(yao)表現在(zai)(zai)風機(ji)，水(shui)泵(beng)的應用上。為(wei)了(le)(le)保證生(sheng)產的可(ke)靠性，各種生(sheng)產機(ji)械在(zai)(zai)設計配用動力(li)驅動時，都留有(you) 的富余量。當電機(ji)不能(neng)(neng)在(zai)(zai)滿負荷(he)下運行(xing)時，除達(da)到動力(li)驅動要(yao)求外(wai)，多余的力(li)矩增加了(le)(le)有(you)功功率的消耗，APF有(you)源(yuan)濾(lv)波(bo)裝置(zhi)造成電能(neng)(neng)的浪費。風機(ji)，泵(beng)類等設備傳(chuan)統的調(diao)(diao)速方法是通過(guo)調(diao)(diao)節(jie)入(ru)口或(huo)出口的擋板(ban)，高壓變(bian)頻(pin)器無(wu)故停機(ji)的真正(zheng)原因閥(fa)(fa)門(men)開度來調(diao)(diao)節(jie)給風量和給水(shui)量，其(qi)輸入(ru)功率大，且大量的能(neng)(neng)源(yuan)消耗在(zai)(zai)擋板(ban)，閥(fa)(fa)門(men)的截(jie)流(liu)過(guo)程(cheng)中。當使用變(bian)頻(pin)調(diao)(diao)速時，如果流(liu)量要(yao)求減小，通過(guo)降低泵(beng)或(huo)風機(ji)的轉速即可(ke)滿足要(yao)求。

　　高壓(ya)變頻(pin)器的分類

　　高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)變(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)(qi)的分(fen)(fen)類(lei)(lei)方法有(you)(you)多種，按(an)(an)照主電路(lu)工作方式分(fen)(fen)類(lei)(lei)，可(ke)以(yi)分(fen)(fen)為(wei)電壓(ya)(ya)(ya)(ya)型(xing)高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)變(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)(qi)和(he)電流型(xing)高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)變(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)(qi);按(an)(an)照開(kai)關(guan)方式分(fen)(fen)類(lei)(lei)，高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)變(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)(qi)-高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)變(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)(qi)維(wei)修-高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)變(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)(qi)維(wei)保-儲能系統(tong)-儲能雙向(xiang)變(bian)流器(qi)(qi)(qi)(qi)PCS-維(wei)斯克電氣(山(shan)東)有(you)(you)限(xian)公司可(ke)以(yi)分(fen)(fen)為(wei)PAM控制(zhi)(zhi)高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)變(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)(qi)，PWM控制(zhi)(zhi)高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)變(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)(qi)和(he)高(gao)(gao)(gao)載頻(pin)(pin)(pin)PWM控制(zhi)(zhi)高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)變(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)(qi);按(an)(an)照工作原理分(fen)(fen)類(lei)(lei)，可(ke)以(yi)分(fen)(fen)為(wei)V/f控制(zhi)(zhi)高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)變(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)(qi)，轉(zhuan)差(cha)頻(pin)(pin)(pin)率控制(zhi)(zhi)高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)變(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)(qi)和(he)矢量控制(zhi)(zhi)高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)變(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)(qi)等;按(an)(an)照用(yong)途(tu)分(fen)(fen)類(lei)(lei)，可(ke)以(yi)分(fen)(fen)為(wei)通用(yong)高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)變(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)(qi)，高(gao)(gao)(gao)性能 高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)變(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)(qi)，高(gao)(gao)(gao)頻(pin)(pin)(pin)高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)變(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)(qi)，單相高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)變(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)(qi)和(he)三相高(gao)(gao)(gao)壓(ya)(ya)(ya)(ya)變(bian)頻(pin)(pin)(pin)器(qi)(qi)(qi)(qi)等。

　　VVVF：改變(bian)(bian)電(dian)(dian)壓(ya)(ya)，改變(bian)(bian)頻率 CVCF：恒電(dian)(dian)壓(ya)(ya)，恒頻率。各國使(shi)用的(de)交流(liu)供電(dian)(dian)電(dian)(dian)源(yuan)，無論(lun)是用于家庭還是用于工廠，其電(dian)(dian)壓(ya)(ya)和頻率均(jun)為(wei)400V/50Hz或(huo)200V/60Hz(50Hz)，等等。通常，把電(dian)(dian)壓(ya)(ya)和頻率固定(ding)不變(bian)(bian)的(de)交流(liu)電(dian)(dian)變(bian)(bian)換(huan)為(wei)電(dian)(dian)壓(ya)(ya)或(huo)頻率可變(bian)(bian)的(de)交流(liu)電(dian)(dian)的(de)裝置(zhi)稱作(zuo)“高壓(ya)(ya)變(bian)(bian)頻器”。為(wei)了產生可變(bian)(bian)的(de)電(dian)(dian)壓(ya)(ya)和頻率，該(gai)設備(bei) 要把電(dian)(dian)源(yuan)的(de)交流(liu)電(dian)(dian)變(bian)(bian)換(huan)為(wei)直(zhi)流(liu)電(dian)(dian)(DC)。