變頻(pin)器是一種可以調節和改變電(dian)(dian)(dian)(dian)(dian)壓和頻(pin)率的(de)(de)電(dian)(dian)(dian)(dian)(dian)源，電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)是該電(dian)(dian)(dian)(dian)(dian)源的(de)(de)負載。只要(yao)參數匹配，兩者相互(hu)使用就沒(mei)有問題，也不會相互(hu)傷害。普(pu)通異(yi)步電(dian)(dian)(dian)(dian)(dian)動機(ji)(ji)(ji)(ji)(ji)的(de)(de)散熱取決于(yu)電(dian)(dian)(dian)(dian)(dian)動機(ji)(ji)(ji)(ji)(ji)底部后面(mian)的(de)(de)風(feng)扇。如果電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)長(chang)時間低于(yu)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)額(e)定(ding)頻(pin)率運行(xing)，電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)轉速低，風(feng)機(ji)(ji)(ji)(ji)(ji)吹入(ru)的(de)(de)風(feng)量(liang)很小，導(dao)致(zhi)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)散熱不良。如果太(tai)熱，馬達就會燒(shao)壞。如果電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)發生故(gu)障，電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)流將增(zeng)加。如果超過無錫變頻(pin)器的(de)(de)額(e)定(ding)電(dian)(dian)(dian)(dian)(dian)流，變頻(pin)器將受到保護(hu)，停止輸出并(bing)向(xiang)用戶報告故(gu)障代碼。那(nei)變頻(pin)器導(dao)致(zhi)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)燒(shao)毀的(de)(de)原因是什么?下面(mian)就一起來看看吧。

1、變頻電機(ji)采用(yong)普(pu)通電機(ji)。

由于普(pu)通(tong)電(dian)(dian)(dian)機的(de)冷(leng)卻(que)(que)風扇與(yu)轉(zhuan)(zhuan)軸相連，當用變(bian)頻(pin)器調速時，轉(zhuan)(zhuan)速不(bu)(bu)穩定，達不(bu)(bu)到電(dian)(dian)(dian)機的(de)額(e)定轉(zhuan)(zhuan)速，冷(leng)卻(que)(que)風扇不(bu)(bu)能發(fa)揮正常作用，導(dao)致電(dian)(dian)(dian)機冷(leng)卻(que)(que)不(bu)(bu)良(liang);此外(wai)，普(pu)通(tong)電(dian)(dian)(dian)機未按變(bian)頻(pin)要(yao)求設計，導(dao)致電(dian)(dian)(dian)機發(fa)熱或燃燒。

2、變(bian)頻(pin)(pin)電(dian)機未(wei)經(jing)調試(shi)直(zhi)接與變(bian)頻(pin)(pin)器連(lian)接。

變頻(pin)(pin)器通(tong)過兩種方式(shi)控(kong)(kong)(kong)(kong)制(zhi)(zhi)電(dian)機：矢量控(kong)(kong)(kong)(kong)制(zhi)(zhi)和(he)v/f曲線控(kong)(kong)(kong)(kong)制(zhi)(zhi)。每個控(kong)(kong)(kong)(kong)制(zhi)(zhi)模(mo)式(shi)應首先(xian)控(kong)(kong)(kong)(kong)制(zhi)(zhi)電(dian)機類型(xing)(同步、異步、帶或不帶編碼器)。電(dian)機額定(ding)(ding)功率。額定(ding)(ding)電(dian)壓(ya)。額定(ding)(ding)電(dian)流(liu)。速(su)度或極數(shu)(shu)。額定(ding)(ding)頻(pin)(pin)率。Z高工作頻(pin)(pin)率。電(dian)機啟動(dong)(dong)和(he)停止(zhi)的加(jia)速(su)和(he)減速(su)時間(jian)。變頻(pin)(pin)器控(kong)(kong)(kong)(kong)制(zhi)(zhi)電(dian)機的保(bao)護方式(shi)和(he)保(bao)護比例系數(shu)(shu)。荷載(zai)波(bo)頻(pin)(pin)率至關重(zhong)要。設置這些參數(shu)(shu)后，選(xuan)(xuan)擇是(shi)使用(yong)矢量控(kong)(kong)(kong)(kong)制(zhi)(zhi)還是(shi)v/f控(kong)(kong)(kong)(kong)制(zhi)(zhi)。選(xuan)(xuan)擇矢量控(kong)(kong)(kong)(kong)制(zhi)(zhi)時，電(dian)機應具有空載(zai)和(he)變頻(pin)(pin)器匹配(pei)的動(dong)(dong)態自(zi)學習(xi)(xi)(xi)或負(fu)載(zai)靜(jing)態自(zi)學習(xi)(xi)(xi)。自(zi)學習(xi)(xi)(xi)后，電(dian)機與變頻(pin)(pin)器配(pei)合(he)，充分發揮矢量控(kong)(kong)(kong)(kong)制(zhi)(zhi)的精(jing)度;選(xuan)(xuan)擇v/f控(kong)(kong)(kong)(kong)件時，不需要自(zi)學習(xi)(xi)(xi)。參數(shu)(shu)調整后，可直接(jie)通(tong)電(dian)。

3、變頻電機(ji)風機(ji)運行方(fang)(fang)向與風機(ji)上(shang)標(biao)明的旋轉方(fang)(fang)向不(bu)一致。

風扇無法工作，導致電機(ji)(ji)散熱(re)不良(liang)，電機(ji)(ji)產生的熱(re)量(liang)無法散發，導致電機(ji)(ji)發熱(re)或燃(ran)燒(shao)。

4、以上三(san)種情況中，2例(li)和3例(li)發生率極高(gao)。

以上(shang)就是(shi)小編給大家介紹的有(you)關于變(bian)頻(pin)器導致(zhi)電機燒毀(hui)的原因(yin)，希望看完之后能夠對大家有(you)所幫助。事實上(shang)，電機故障并不是(shi)電機本身的原因(yin)。主要是(shi)變(bian)頻(pin)器調試(shi)不規范或使(shi)用變(bian)頻(pin)電機時(shi)使(shi)用非變(bian)頻(pin)電機造成的。