直流傳動 水泥回轉窯控制系統
直(zhi)流電(dian)(dian)(dian)動(dong)機(ji)(ji)調(diao)(diao)速(su)性(xing)能(neng)好、起動(dong)轉矩大,可(ke)(ke)以在(zai)重負載情況起制動(dong)并且(qie)實(shi)現(xian)均勻、平滑(hua)的(de)(de)無級調(diao)(diao)速(su)。隨(sui)著新型(xing)電(dian)(dian)(dian)力電(dian)(dian)(dian)子(zi)器件的(de)(de)出現(xian)和計算(suan)機(ji)(ji)技術的(de)(de)發展,傳(chuan)(chuan)(chuan)統(tong)的(de)(de)電(dian)(dian)(dian)子(zi)模擬控(kong)制電(dian)(dian)(dian)路和晶閘管變速(su)傳(chuan)(chuan)(chuan)動(dong)裝(zhuang)置(zhi),已逐步由新型(xing)可(ke)(ke)關斷電(dian)(dian)(dian)力電(dian)(dian)(dian)子(zi)元件如IGBT以及(ji)微(wei)機(ji)(ji)全數字(zi)傳(chuan)(chuan)(chuan)動(dong)裝(zhuang)置(zhi)所取代。由于后者具有控(kong)制性(xing)能(neng)好,調(diao)(diao)試維修方便,可(ke)(ke)靠性(xing)高等特點,在(zai)市場上得到用戶首肯。目前新型(xing)干法水(shui)泥生產線中回轉窯的(de)(de)電(dian)(dian)(dian)力拖動(dong)系統(tong)絕(jue)大多數采用全數字(zi)直(zhi)流傳(chuan)(chuan)(chuan)動(dong)裝(zhuang)置(zhi)。安徽得潤電(dian)(dian)(dian)氣在(zai)直(zhi)流傳(chuan)(chuan)(chuan)動(dong)控(kong)制柜的(de)(de)設計與調(diao)(diao)試中積(ji)累了(le)豐富的(de)(de)經驗。
直(zhi)流(liu)(liu)電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機(ji)調速(su)(su)(su)系統(tong)最早(zao)采(cai)用(yong)改變(bian)電(dian)(dian)(dian)(dian)樞回路(lu)電(dian)(dian)(dian)(dian)阻來(lai)實(shi)現(xian),此(ci)方法簡(jian)單易行(xing)、設備制造(zao)方便、價格低廉;但(dan)缺(que)點是效率(lv)低、機(ji)械(xie)特(te)性(xing)(xing)軟,不(bu)能(neng)得(de)到較(jiao)寬(kuan)和(he)平滑的(de)(de)(de)調速(su)(su)(su)性(xing)(xing)能(neng)。該(gai)(gai)法只適用(yong)在一些(xie)小功率(lv)且調速(su)(su)(su)范(fan)圍要求不(bu)大(da)的(de)(de)(de)場合。發(fa)電(dian)(dian)(dian)(dian)機(ji)-電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機(ji)系統(tong)的(de)(de)(de)出現(xian)使(shi)得(de)改變(bian)勵磁(ci)磁(ci)通(tong)調速(su)(su)(su)變(bian)得(de)可(ke)行(xing),該(gai)(gai)法可(ke)獲(huo)得(de)較(jiao)寬(kuan)的(de)(de)(de)調速(su)(su)(su)范(fan)圍、較(jiao)小的(de)(de)(de)轉速(su)(su)(su)變(bian)化(hua)率(lv)和(he)平滑的(de)(de)(de)調速(su)(su)(su)性(xing)(xing)能(neng)。但(dan)缺(que)點是系統(tong)重量大(da)、占地(di)多、效率(lv)低及(ji)(ji)維修(xiu)困(kun)難。近年來(lai),隨著電(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)子技術(shu)(shu)的(de)(de)(de)迅速(su)(su)(su)發(fa)展(zhan),由晶閘管變(bian)流(liu)(liu)器供電(dian)(dian)(dian)(dian)的(de)(de)(de)直(zhi)流(liu)(liu)電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機(ji)調速(su)(su)(su)系統(tong)已取代了(le)發(fa)電(dian)(dian)(dian)(dian)機(ji)-電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機(ji)調速(su)(su)(su)系統(tong),特(te)別是大(da)規模(mo)集成(cheng)電(dian)(dian)(dian)(dian)路(lu)技術(shu)(shu)以及(ji)(ji)計算機(ji)技術(shu)(shu)的(de)(de)(de)飛速(su)(su)(su)發(fa)展(zhan),使(shi)直(zhi)流(liu)(liu)電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機(ji)調速(su)(su)(su)系統(tong)的(de)(de)(de)精度(du)、動(dong)(dong)(dong)態性(xing)(xing)能(neng)、可(ke)靠性(xing)(xing)有了(le)更大(da)的(de)(de)(de)提(ti)高。電(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)子技術(shu)(shu)中IGBT等大(da)功率(lv)器件的(de)(de)(de)發(fa)展(zhan)正(zheng)在取代晶閘管,出現(xian)了(le)性(xing)(xing)能(neng)更好的(de)(de)(de)直(zhi)流(liu)(liu)調速(su)(su)(su)系統(tong)。
安徽得潤電氣是ABB授權系統集成商、授權自助服務中心。作為新一代的數字式直流調速裝置,ABB DCS800系列(lie)集合(he)了DCS400的(de)(de)(de)簡易性(xing)、DCS500的(de)(de)(de)可(ke)(ke)編程(cheng)性(xing)、DCS600的(de)(de)(de)可(ke)(ke)控(kong)制(zhi)性(xing)以及(ji)AC傳動的(de)(de)(de)可(ke)(ke)通用(yong)(yong)(yong)性(xing),主(zhu)電(dian)路采(cai)用(yong)(yong)(yong)模塊化(hua)結構,主(zhu)控(kong)回路采(cai)用(yong)(yong)(yong)集成化(hua)電(dian)路,再加(jia)上(shang)微(wei)處理器存儲(chu)記憶、計算、判斷、通訊(xun)、內部數字化(hua)量的(de)(de)(de)傳遞與控(kong)制(zhi),而且可(ke)(ke)根(gen)據實際需(xu)要對裝(zhuang)置的(de)(de)(de)參(can)數進行修改和組態。DCS800系列(lie)廣泛應用(yong)(yong)(yong)于(yu)水泥(ni)廠回轉(zhuan)窯的(de)(de)(de)直流傳動系統。
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