高(gao)(gao)(gao)壓變頻(pin)(pin)(pin)(pin)器是(shi)把工頻(pin)(pin)(pin)(pin)電(dian)(dian)(dian)源(yuan)(50Hz或60Hz)變換成各種頻(pin)(pin)(pin)(pin)率的(de)(de)(de)交(jiao)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)源(yuan)，以實現電(dian)(dian)(dian)機(ji)(ji)的(de)(de)(de)變速(su)運(yun)行的(de)(de)(de)設備(bei)，其中(zhong)控(kong)制(zhi)電(dian)(dian)(dian)路(lu)(lu)(lu)完成對主電(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)(de)控(kong)制(zhi)，整流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)路(lu)(lu)(lu)將交(jiao)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)變換成直流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)，直流(liu)(liu)(liu)(liu)(liu)中(zhong)間電(dian)(dian)(dian)路(lu)(lu)(lu)對整流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)路(lu)(lu)(lu)的(de)(de)(de)輸出(chu)進行平(ping)滑濾波(bo)，逆變電(dian)(dian)(dian)路(lu)(lu)(lu)將直流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)再逆成交(jiao)流(liu)(liu)(liu)(liu)(liu)電(dian)(dian)(dian)。對于如矢量(liang)控(kong)制(zhi)高(gao)(gao)(gao)壓變頻(pin)(pin)(pin)(pin)器這種需(xu)要大量(liang)運(yun)算的(de)(de)(de)高(gao)(gao)(gao)壓變頻(pin)(pin)(pin)(pin)器來說，APF有源(yuan)濾波(bo)裝置有時還需(xu)要一個(ge)進行轉矩(ju)計算的(de)(de)(de)CPU以及一些相應(ying)的(de)(de)(de)電(dian)(dian)(dian)路(lu)(lu)(lu)。變頻(pin)(pin)(pin)(pin)調(diao)速(su)是(shi)通過改變電(dian)(dian)(dian)機(ji)(ji)定子繞組供電(dian)(dian)(dian)的(de)(de)(de)頻(pin)(pin)(pin)(pin)率來達到調(diao)速(su)的(de)(de)(de)目的(de)(de)(de)。

　　高壓變頻器的作(zuo)用(yong)

　　一、高壓變頻器無(wu)故停機的真正原因可調(diao)的轉矩(ju)

　　通過變(bian)(bian)頻調速后，能(neng)夠設(she)置相應的(de)(de)轉(zhuan)(zhuan)矩(ju) 來保(bao)護機械不(bu)致(zhi)損壞，從而(er)保(bao)證工(gong)(gong)藝過程(cheng)的(de)(de)連續性(xing)和產品(pin)的(de)(de)可(ke)靠性(xing)。目前的(de)(de)變(bian)(bian)頻技(ji)術使得(de)不(bu)僅轉(zhuan)(zhuan)矩(ju) 可(ke)調，甚至轉(zhuan)(zhuan)矩(ju)的(de)(de)控制精度都能(neng)達到3%～5%左右。在工(gong)(gong)頻狀態(tai)下，電機只能(neng)通過檢測電流(liu)值或熱(re)保(bao)護來進行控制，而(er)無法(fa)像在變(bian)(bian)頻控制一樣設(she)置 的(de)(de)轉(zhuan)(zhuan)矩(ju)值來動作。

　　二、受控(kong)的停止方式

　　如同(tong)(tong)可(ke)控的加速(su)一(yi)樣, 在變(bian)頻(pin)調速(su)中(zhong), 停止(zhi)(zhi)方式可(ke)以受(shou)控，并且(qie)有(you)(you)不同(tong)(tong)的停止(zhi)(zhi)方式可(ke)以選擇(減速(su)停車，自由停車，APF有(you)(you)源濾波裝(zhuang)置減速(su)停車+直(zhi)流制動)，同(tong)(tong)樣它能減少對機械(xie)部件和電機的沖擊(ji)，從而使(shi)整個系統更加可(ke)靠，壽(shou)命(ming)也會相應增加。

　　三、節能

　　高壓變頻器節能(neng)(neng)(neng)主要表現在(zai)風機(ji)(ji)，水泵(beng)的(de)(de)應用上。為了保證生產的(de)(de)可靠性，各種生產機(ji)(ji)械在(zai)設(she)計配用動力(li)(li)驅動時，都留有 的(de)(de)富余量(liang)。當電機(ji)(ji)不(bu)能(neng)(neng)(neng)在(zai)滿(man)負荷(he)下(xia)運行(xing)時，除達到動力(li)(li)驅動要求外，多余的(de)(de)力(li)(li)矩增(zeng)加了有功(gong)功(gong)率(lv)的(de)(de)消耗(hao)，APF有源(yuan)濾波(bo)裝(zhuang)置造成(cheng)電能(neng)(neng)(neng)的(de)(de)浪費。風機(ji)(ji)，泵(beng)類等設(she)備傳統的(de)(de)調(diao)(diao)速(su)方法是通(tong)過調(diao)(diao)節入(ru)口或出口的(de)(de)擋板(ban)(ban)，高壓變頻器無故停機(ji)(ji)的(de)(de)真正(zheng)原(yuan)因閥門開度來調(diao)(diao)節給(gei)風量(liang)和給(gei)水量(liang)，其(qi)輸入(ru)功(gong)率(lv)大，且大量(liang)的(de)(de)能(neng)(neng)(neng)源(yuan)消耗(hao)在(zai)擋板(ban)(ban)，閥門的(de)(de)截流過程中(zhong)。當使用變頻調(diao)(diao)速(su)時，如(ru)果流量(liang)要求減小，通(tong)過降低(di)泵(beng)或風機(ji)(ji)的(de)(de)轉(zhuan)速(su)即(ji)可滿(man)足要求。

　　高壓變頻器的分類

　　高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)變(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)器(qi)(qi)(qi)的分(fen)類(lei)方(fang)(fang)(fang)法有多種(zhong)，按照(zhao)主電(dian)(dian)路工(gong)作(zuo)方(fang)(fang)(fang)式分(fen)類(lei)，可以(yi)分(fen)為電(dian)(dian)壓(ya)(ya)型高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)變(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)器(qi)(qi)(qi)和電(dian)(dian)流型高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)變(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)器(qi)(qi)(qi);按照(zhao)開關(guan)方(fang)(fang)(fang)式分(fen)類(lei)，高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)變(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)器(qi)(qi)(qi)-高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)變(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)器(qi)(qi)(qi)維(wei)修-高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)變(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)器(qi)(qi)(qi)維(wei)保-儲能(neng)系統-儲能(neng)雙(shuang)向變(bian)(bian)(bian)(bian)(bian)(bian)流器(qi)(qi)(qi)PCS-維(wei)斯克(ke)電(dian)(dian)氣(山東)有限公司(si)可以(yi)分(fen)為PAM控(kong)制(zhi)(zhi)高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)變(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)器(qi)(qi)(qi)，PWM控(kong)制(zhi)(zhi)高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)變(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)器(qi)(qi)(qi)和高(gao)(gao)(gao)(gao)(gao)載頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)PWM控(kong)制(zhi)(zhi)高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)變(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)器(qi)(qi)(qi);按照(zhao)工(gong)作(zuo)原理分(fen)類(lei)，可以(yi)分(fen)為V/f控(kong)制(zhi)(zhi)高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)變(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)器(qi)(qi)(qi)，轉(zhuan)差頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)率控(kong)制(zhi)(zhi)高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)變(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)器(qi)(qi)(qi)和矢量控(kong)制(zhi)(zhi)高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)變(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)器(qi)(qi)(qi)等(deng);按照(zhao)用(yong)途分(fen)類(lei)，可以(yi)分(fen)為通(tong)用(yong)高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)變(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)器(qi)(qi)(qi)，高(gao)(gao)(gao)(gao)(gao)性(xing)能(neng) 高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)變(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)器(qi)(qi)(qi)，高(gao)(gao)(gao)(gao)(gao)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)變(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)器(qi)(qi)(qi)，單相高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)變(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)器(qi)(qi)(qi)和三相高(gao)(gao)(gao)(gao)(gao)壓(ya)(ya)變(bian)(bian)(bian)(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)(pin)(pin)(pin)器(qi)(qi)(qi)等(deng)。

　　VVVF：改變(bian)(bian)(bian)電壓(ya)(ya)，改變(bian)(bian)(bian)頻(pin)(pin)率(lv)(lv) CVCF：恒電壓(ya)(ya)，恒頻(pin)(pin)率(lv)(lv)。各國使用的(de)(de)(de)交(jiao)流供電電源，無論是用于家庭還是用于工廠(chang)，其電壓(ya)(ya)和頻(pin)(pin)率(lv)(lv)均為(wei)400V/50Hz或(huo)200V/60Hz(50Hz)，等等。通(tong)常(chang)，把(ba)電壓(ya)(ya)和頻(pin)(pin)率(lv)(lv)固(gu)定不變(bian)(bian)(bian)的(de)(de)(de)交(jiao)流電變(bian)(bian)(bian)換為(wei)電壓(ya)(ya)或(huo)頻(pin)(pin)率(lv)(lv)可(ke)變(bian)(bian)(bian)的(de)(de)(de)交(jiao)流電的(de)(de)(de)裝置稱作“高壓(ya)(ya)變(bian)(bian)(bian)頻(pin)(pin)器”。為(wei)了產生可(ke)變(bian)(bian)(bian)的(de)(de)(de)電壓(ya)(ya)和頻(pin)(pin)率(lv)(lv)，該(gai)設備 要把(ba)電源的(de)(de)(de)交(jiao)流電變(bian)(bian)(bian)換為(wei)直流電(DC)。