西(xi)門子伺服電(dian)(dian)機(ji)維修電(dian)(dian)機(ji)發熱隨(sui)速度變化的情況

電(dian)機(ji)(ji)發熱允許(xu)到什么程度(du)(du)，主要取決(jue)于電(dian)機(ji)(ji)內部(bu)(bu)絕緣等級。內部(bu)(bu)絕緣性能在(zai)高溫(wen)下(130度(du)(du)以上(shang))才會被破壞(huai)。低于130度(du)(du)，電(dian)機(ji)(ji)不(bu)會損壞(huai)，表面(mian)溫(wen)度(du)(du)會在(zai)90度(du)(du)以下。表面(mian)溫(wen)度(du)(du)在(zai)70-80度(du)(du)都是正常的。滴(di)幾滴(di)水迅速氣化，則90度(du)(du)以上(shang)了;當然也(ye)可以用測溫(wen)槍來(lai)檢測。

西門(men)子伺服電機維修(xiu)電機發(fa)熱隨速度變(bian)化的(de)情況

采用恒(heng)流(liu)驅動(dong)技(ji)術時，電(dian)(dian)機在靜(jing)態和低速下，電(dian)(dian)流(liu)會維(wei)持(chi)相對恒(heng)定，以保持(chi)恒(heng)力(li)矩輸出。速度(du)高到一定程度(du)，電(dian)(dian)機內(nei)部反電(dian)(dian)勢升高，電(dian)(dian)流(liu)將逐步下降，力(li)矩也會下降。

西門子(zi)伺服電機維修發熱帶來的(de)影響

電機(ji)發(fa)(fa)熱(re)(re)雖然一般(ban)不會影響電機(ji)的壽命，對大多數客(ke)戶來(lai)說沒必要理會。嚴(yan)重(zhong)的發(fa)(fa)熱(re)(re)會帶來(lai)一些負面(mian)影響。如電機(ji)內部各部分熱(re)(re)膨脹系數不同導致結構應力的變(bian)化和內部氣隙的微小變(bian)化，會影響電機(ji)的動態響應，高速會容易失(shi)步(bu)。

西(xi)門子(zi)伺服電(dian)機維修減少電(dian)機的發熱(re)

減少發熱(re)，就(jiu)是減少銅損(sun)和鐵損(sun)。減少銅損(sun)有(you)(you)兩個方(fang)向(xiang)，減少電(dian)(dian)(dian)(dian)阻和電(dian)(dian)(dian)(dian)流(liu)(liu)，這就(jiu)要求在選型(xing)時盡(jin)量(liang)選擇電(dian)(dian)(dian)(dian)阻小和額定電(dian)(dian)(dian)(dian)流(liu)(liu)小的(de)電(dian)(dian)(dian)(dian)機(ji)(ji)，對兩相(xiang)電(dian)(dian)(dian)(dian)機(ji)(ji)，能用串聯的(de)電(dian)(dian)(dian)(dian)機(ji)(ji)就(jiu)不(bu)用并(bing)聯電(dian)(dian)(dian)(dian)機(ji)(ji)。細分驅動(dong)器由于電(dian)(dian)(dian)(dian)流(liu)(liu)波(bo)形接近正弦(xian)，諧波(bo)少，電(dian)(dian)(dian)(dian)機(ji)(ji)發熱(re)也會(hui)較少。減少鐵損(sun)的(de)辦法不(bu)多，電(dian)(dian)(dian)(dian)壓(ya)(ya)等級與之有(you)(you)關，高(gao)壓(ya)(ya)驅動(dong)的(de)電(dian)(dian)(dian)(dian)機(ji)(ji)雖然會(hui)帶來高(gao)速特性的(de)提升，但也帶來發熱(re)的(de)增(zeng)加。