變(bian)頻(pin)器(qi)驅(qu)動(dong)電(dian)路(lu)是(shi)變(bian)頻(pin)器(qi)中(zhong)比(bi)較(jiao)容(rong)易(yi)出(chu)現(xian)故(gu)障(zhang)的(de)一(yi)部(bu)分(fen)電(dian)路(lu)，當(dang)驅(qu)動(dong)電(dian)路(lu)出(chu)現(xian)故(gu)障(zhang)進(jin)行(xing)維(wei)修(xiu)時(shi)，如(ru)果(guo)沒(mei)能(neng)將(jiang)故(gu)障(zhang)徹(che)底(di)的(de)排(pai)除(chu)掉(diao)，可(ke)能(neng)再(zai)次(ci)出(chu)現(xian)損(sun)壞(huai)模(mo)塊(kuai)的(de)情(qing)況(kuang)，為(wei)了(le)讓(rang)變(bian)頻(pin)器(qi)維(wei)修(xiu)技(ji)術(shu)人(ren)員(yuan)在(zai)維(wei)修(xiu)過(guo)程(cheng)中(zhong)避(bi)免(mian)驅(qu)動(dong)電(dian)路(lu)再(zai)次(ci)損(sun)壞(huai)
，大(da)連(lian)變(bian)頻(pin)器(qi)維(wei)修(xiu)廠(chang)家(jia)跟(gen)大(da)家(jia)講(jiang)講(jiang)維(wei)修(xiu)變(bian)頻(pin)器(qi)驅(qu)動(dong)電(dian)路(lu)的(de)注(zhu)意(yi)事(shi)項(xiang)。

       zaiweixiubianpinqiqudongdianlu，xuyaogeibianpinqiqudongdianlujiadianjinxingceshishi，dajiayaojideduankaigeinibiandianludegongdian。zheshiyinweiwomenzaijiancequdongdianlushi，suoshiyongdeyiqiyibiaokenenghuichanshengyixieganraoxinhao，ruguozhexieganraoxinhaocuandaonibiandianluIGBT的柵極G時
，IGBT可能會被觸發而處於導通狀態，如果遇到上、下橋臂的IGBT同時導通，就會引起供給逆變電路的510VDC電源正

、負極短路，出現燒壞IGBT功率模塊和供電電路的情況。

       在維修變頻器驅動電路時，如果要給逆變電路正常供電的話，千萬記得不要斷開驅動電路。這是因為在IGBT模塊的柵極G與發射極E之間存在有分布電容，在IGBT模塊的柵極G與集電極C之間也存在有分布電容。

 

 

 

       當上、下橋臂的IGBT大功率管串聯在P、N電源之間，IGBT的柵極懸空時，電源就會對上下橋臂IGBT的分布電容充電，如果柵極G與發射極E之間的電壓達到IGBT的開啟電壓時
，IGBT大功率管就會導通，如果上下橋臂的IGBT同時導通時就會將逆變電路的510VDC電源正、負極短路，出現燒壞IGBT功gong率lv模mo塊kuai和he供gong電dian電dian路lu的de情qing況kuang。為wei了le避bi免mian這zhe種zhong情qing況kuang發fa生sheng，友you情qing提ti醒xing一yi下xia朋peng友you們men，在zai維wei修xiu變bian頻pin器qi驅qu動dong電dian路lu時shi，如ru果guo要yao給gei逆ni變bian電dian路lu正zheng常chang供gong電dian的de話hua，千qian萬wan記ji得de不bu要yao斷duan開kai驅qu動dong電dian路lu。

       變頻器維修：bianpinqizaigelingyudedaoleguangfanyingyong。bianpinqigouzaofuza
，shejizhishimianjiaoguang，guzhangzhongleiqianqibaiguai，weixiunandujiaoda。weixiurenyuanyaoxiangkuaisuditigaoweixiushuiping
，budanyaoyouyidingdelilunjichu，erqiehaibixuzhangwoyidingdeshiyongfangfa。

       liyongbianpinjishuduijiaoliudianjijinxingtiaosubujinzaixingnengzhibiaoshangyuanchaoguochuantongdezhiliutiaosu，erqiezaizhuduofangmiandouyouyuzhiliudiandongjitiaosu。yinci，zaigegelingyu，bianpinqidoudedaoleguangfandeshiyong。ranerbianpinqizhongtongziranjiezhongdewanshiwanwuyiyang，cunzaizhelaohuaheshoumingqixiandewenti，zaichangqideyunxingguochengzhongbianpinqizhongdeyuanqijianbukebimiandihuiyinweigezhongyuanyinchuxianzheyanghuonayangdeguzhang。