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品牌 | Siemens/西門子 | 產地 | 進口 |
---|---|---|---|
加工定制 | 是 |
1P6RA7087-6DV62-0直流驅動器修復任何問題,西門子直流調速(su)裝置售后修理廠家,直流控制器(qi),直流變頻器(qi)修理中心
上(shang)海恒稅電(dian)氣(qi)維修公司10年(nian)專(zhuan)注(zhu)于西(xi)門(men)子自動化設(she)(she)備維修銷售,擁有西(xi)門(men)子全套測(ce)試平臺,另(ling)外倉庫配件(jian)充足,維修帶載(zai)運行可以快速可靠的檢測(ce)設(she)(she)備故(gu)障點位,專(zhuan)業維修,上(shang)機測(ce)試正(zheng)常(chang)后(hou)提供給(gei)客戶(hu), 使(shi)設(she)(she)備能達到現場正(zheng)常(chang)使(shi)用(yong)。為用(yong)戶(hu)節約時間成(cheng)本、提高生產效率!
1P6RA7087-6DV62-0直流驅動器修復任何問題包括
無輸出,無勵磁電(dian)(dian)(dian)壓,跳閘,燒(shao)可(ke)控(kong)硅(gui),模(mo)塊炸,速度(du)不(bu)可(ke)控(kong),主(zhu)板故障(zhang),控(kong)制板壞(huai),轉速不(bu)正常(chang),開不(bu)了(le)機(ji),過流,過壓,過熱,速度(du)不(bu)穩, 電(dian)(dian)(dian)機(ji)抖動(dong),低(di)速不(bu)穩,高(gao)速飛車,電(dian)(dian)(dian)機(ji)不(bu)轉,CUD1 C98043直流控(kong)制主(zhu)板維修(xiu),C98043勵磁板維修(xiu),F030 電(dian)(dian)(dian)樞電(dian)(dian)(dian)流過大導致脈沖(chong)封
要(yao)想(xiang)做好直流驅動器維修,了解(jie)變(bian)(bian)頻(pin)(pin)器基礎知識當(dang)然(ran)是(shi)非常重要(yao)的,但是(shi)對于(yu)變(bian)(bian)頻(pin)(pin)器維修,僅了解(jie)以上基本(ben)電(dian)(dian)路還遠(yuan)遠(yuan)不夠的,還須深(shen)刻了解(jie)主(zhu)回路電(dian)(dian)路,主(zhu)回路主(zhu)要(yao)由整流電(dian)(dian)路、限流電(dian)(dian)路、濾波電(dian)(dian)路、制動電(dian)(dian)路、逆變(bian)(bian)電(dian)(dian)路和檢測取樣電(dian)(dian)路部分(fen)組成。下圖是(shi)它的結(jie)構圖。
直(zhi)流(liu)驅動器基本(ben)電路圖分析
目前,通(tong)用型變(bian)(bian)頻器絕(jue)大多數是(shi)交(jiao)(jiao)(jiao)—直(zhi)—交(jiao)(jiao)(jiao)型變(bian)(bian)頻器,通(tong)常(chang)尤以電(dian)壓器變(bian)(bian)頻器為通(tong)用,其主回路(lu)圖(見圖1.1),它是(shi)變(bian)(bian)頻器的核(he)心電(dian)路(lu),由(you)整(zheng)流回路(lu)(交(jiao)(jiao)(jiao)—直(zhi)交(jiao)(jiao)(jiao)換),直(zhi)流濾波(bo)電(dian)路(lu)(能耗電(dian)路(lu))及(ji)逆變(bian)(bian)電(dian)路(lu)(直(zhi)—交(jiao)(jiao)(jiao)變(bian)(bian)換)組成,當然(ran)還(huan)包括有限流電(dian)路(lu)、制動電(dian)路(lu)、控制電(dian)路(lu)等(deng)組成部(bu)分。
1)整流電路
,通(tong)用變頻器(qi)的(de)(de)(de)整(zheng)(zheng)流(liu)電(dian)(dian)(dian)(dian)路(lu)是(shi)(shi)由(you)三(san)(san)相(xiang)橋(qiao)式(shi)整(zheng)(zheng)流(liu)橋(qiao)組成。它的(de)(de)(de)功能是(shi)(shi)將工(gong)頻電(dian)(dian)(dian)(dian)源(yuan)進行整(zheng)(zheng)流(liu),經中間直流(liu)環(huan)節平波(bo)后(hou)為(wei)(wei)逆變電(dian)(dian)(dian)(dian)路(lu)和控制電(dian)(dian)(dian)(dian)路(lu)提供所(suo)需(xu)的(de)(de)(de)直流(liu)電(dian)(dian)(dian)(dian)源(yuan)。三(san)(san)相(xiang)交(jiao)(jiao)流(liu)電(dian)(dian)(dian)(dian)源(yuan)一般需(xu)經過吸收(shou)電(dian)(dian)(dian)(dian)容和壓敏電(dian)(dian)(dian)(dian)阻網絡引入整(zheng)(zheng)流(liu)橋(qiao)的(de)(de)(de)輸(shu)入端。網絡的(de)(de)(de)作用,是(shi)(shi)吸收(shou)交(jiao)(jiao)流(liu)電(dian)(dian)(dian)(dian)網的(de)(de)(de)高頻諧波(bo)信號和浪(lang)涌過電(dian)(dian)(dian)(dian)壓,從(cong)而(er)(er)避免(mian)由(you)此(ci)而(er)(er)損壞(huai)變頻器(qi)。當電(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)壓為(wei)(wei)三(san)(san)相(xiang)380V時,整(zheng)(zheng)流(liu)器(qi)件的(de)(de)(de)最(zui)大(da)反向(xiang)電(dian)(dian)(dian)(dian)壓一般為(wei)(wei)1200—1600V,最(zui)大(da)整(zheng)(zheng)流(liu)電(dian)(dian)(dian)(dian)流(liu)為(wei)(wei)變頻器(qi)額定電(dian)(dian)(dian)(dian)流(liu)的(de)(de)(de)兩(liang)倍。
2)濾(lv)波電路
逆(ni)變器的(de)(de)負(fu)載屬感性負(fu)載的(de)(de)異步(bu)電(dian)(dian)動機(ji)(ji),無論異步(bu)電(dian)(dian)動機(ji)(ji)處于電(dian)(dian)動或發(fa)電(dian)(dian)狀態,在直流(liu)(liu)(liu)濾(lv)波電(dian)(dian)路和(he)異步(bu)電(dian)(dian)動機(ji)(ji)之間(jian),總會有無功功率的(de)(de)交換,這(zhe)種無功能量要靠直流(liu)(liu)(liu)中間(jian)電(dian)(dian)路的(de)(de)儲能元(yuan)件來緩沖。同時(shi),三相整流(liu)(liu)(liu)橋輸出的(de)(de)電(dian)(dian)壓(ya)和(he)電(dian)(dian)流(liu)(liu)(liu)屬直流(liu)(liu)(liu)脈沖電(dian)(dian)壓(ya)和(he)電(dian)(dian)流(liu)(liu)(liu)。為了減小直流(liu)(liu)(liu)電(dian)(dian)壓(ya)和(he)電(dian)(dian)流(liu)(liu)(liu)的(de)(de)波動,直流(liu)(liu)(liu)濾(lv)波電(dian)(dian)路起到(dao)對整流(liu)(liu)(liu)電(dian)(dian)路的(de)(de)輸出進行濾(lv)波的(de)(de)作用(yong)。
通用(yong)變頻(pin)器(qi)直流濾波電(dian)(dian)路的(de)大(da)容量鋁電(dian)(dian)解(jie)電(dian)(dian)容,通常是由若(ruo)干個電(dian)(dian)容器(qi)串聯(lian)和(he)并聯(lian)構成(cheng)電(dian)(dian)容器(qi)組,以得到(dao)所需的(de)耐壓值(zhi)和(he)容量。另外,因為電(dian)(dian)解(jie)電(dian)(dian)容器(qi)容量有較大(da)的(de)離散性,這將(jiang)使(shi)它們隨的(de)電(dian)(dian)壓不(bu)相等。因此,電(dian)(dian)容器(qi)要各并聯(lian)一個阻值(zhi)等相的(de)勻壓電(dian)(dian)阻,消除離散性的(de)影(ying)響,因而電(dian)(dian)容的(de)壽(shou)命則(ze)會嚴重制約變頻(pin)器(qi)的(de)壽(shou)命。
3)逆變(bian)電路
逆(ni)變(bian)(bian)電(dian)(dian)(dian)路的(de)作(zuo)用(yong)是(shi)在(zai)控制電(dian)(dian)(dian)路的(de)作(zuo)用(yong)下,將直流電(dian)(dian)(dian)路輸(shu)出(chu)(chu)的(de)直流電(dian)(dian)(dian)源(yuan)轉換成頻(pin)率和(he)電(dian)(dian)(dian)壓都可以任意調節的(de)交流電(dian)(dian)(dian)源(yuan)。逆(ni)變(bian)(bian)電(dian)(dian)(dian)路的(de)輸(shu)出(chu)(chu)就是(shi)變(bian)(bian)頻(pin)器的(de)輸(shu)出(chu)(chu),所(suo)以逆(ni)變(bian)(bian)電(dian)(dian)(dian)路是(shi)變(bian)(bian)頻(pin)器的(de)核心電(dian)(dian)(dian)路之一,起著(zhu)非(fei)常重要的(de)作(zuo)用(yong)。
最(zui)常見的(de)逆變(bian)電路(lu)結構形式是(shi)利用(yong)六(liu)個功率開(kai)關(guan)器件(jian)(jian)(GTR、IGBT、GTO等)組成的(de)三相橋式逆變(bian)電路(lu),有規(gui)律的(de)控制逆變(bian)器中功率開(kai)關(guan)器件(jian)(jian)的(de)導通與關(guan)斷(duan),可以得到任(ren)意頻率的(de)三相交流(liu)輸出。
通常(chang)的(de)(de)中小容量的(de)(de)變(bian)頻器(qi)主回(hui)路器(qi)件一(yi)般采(cai)用(yong)集(ji)成模(mo)(mo)塊(kuai)(kuai)或智(zhi)能(neng)模(mo)(mo)塊(kuai)(kuai)。智(zhi)能(neng)模(mo)(mo)塊(kuai)(kuai)的(de)(de)內部(bu)高(gao)度集(ji)成了整流模(mo)(mo)塊(kuai)(kuai)、逆(ni)變(bian)模(mo)(mo)塊(kuai)(kuai)、各種傳感(gan)器(qi)、保(bao)護電(dian)路及驅動電(dian)路。如三(san)菱(ling)公(gong)司生(sheng)(sheng)產的(de)(de)IPMPM50RSA120,富(fu)士公(gong)司生(sheng)(sheng)產的(de)(de)7MBP50RA060,西門子公(gong)司生(sheng)(sheng)產的(de)(de)BSM50GD120等(deng),內部(bu)集(ji)成了整流模(mo)(mo)塊(kuai)(kuai)、功(gong)率(lv)(lv)因數校正電(dian)路、IGBT逆(ni)變(bian)模(mo)(mo)塊(kuai)(kuai)及各種檢測保(bao)護功(gong)能(neng)。模(mo)(mo)塊(kuai)(kuai)的(de)(de)典型開關頻率(lv)(lv)為20KHz,保(bao)護功(gong)能(neng)為欠電(dian)壓(ya)、過電(dian)壓(ya)和過熱故障(zhang)時輸出(chu)故障(zhang)信(xin)號燈。
逆變(bian)(bian)電(dian)(dian)路(lu)(lu)(lu)中都設置有(you)續流(liu)電(dian)(dian)路(lu)(lu)(lu)。續流(liu)電(dian)(dian)路(lu)(lu)(lu)的功能(neng)是當頻率下降(jiang)時(shi),異(yi)(yi)步(bu)(bu)電(dian)(dian)動(dong)機的同(tong)步(bu)(bu)轉速也隨之下降(jiang)。為異(yi)(yi)步(bu)(bu)電(dian)(dian)動(dong)機的再生電(dian)(dian)能(neng)反饋至直流(liu)電(dian)(dian)路(lu)(lu)(lu)提供通(tong)道。在逆變(bian)(bian)過程中,寄(ji)生電(dian)(dian)感釋放能(neng)量提供通(tong)道。另外,當位于同(tong)一橋臂(bei)上的兩個開關,同(tong)時(shi)處于開通(tong)狀態時(shi)將會出現短路(lu)(lu)(lu)現象,并燒毀(hui)換(huan)(huan)流(liu)器(qi)件。所以在實際的通(tong)用變(bian)(bian)頻器(qi)中還設有(you)緩沖電(dian)(dian)路(lu)(lu)(lu)等各種(zhong)相應的輔助電(dian)(dian)路(lu)(lu)(lu),以保證電(dian)(dian)路(lu)(lu)(lu)的正常工作和在發生意外情(qing)況時(shi),對換(huan)(huan)流(liu)器(qi)件進行保護 .