盛華變頻電機廠提醒，隨著變頻調速技術的發展，變頻調速電機廣泛的在各種機械設備中加以應用，但是隨著企業對變頻電機的不良使用，變頻電機的絕緣會過早的損壞，今天山東變頻電機廠就為大家淺析變頻電機的絕緣故障。

首先(xian)我們要先(xian)了解變頻電機的隔(ge)熱出現問題的原理。

交(jiao)(jiao)流(liu)變頻(pin)(pin)高壓三(san)相電(dian)(dian)(dian)(dian)機在采用的(de)(de)期間中這樣不僅同(tong)常見的(de)(de)高壓三(san)相電(dian)(dian)(dian)(dian)機同(tong)樣的(de)(de)備(bei)受(shou)運(yun)行過的(de)(de)電(dian)(dian)(dian)(dian)壓的(de)(de)撞擊，但是會(hui)備(bei)受(shou)PWM（脈寬(kuan)調制解調）波(bo)行波(bo)過流(liu)保護(hu)電(dian)(dian)(dian)(dian)流(liu)和交(jiao)(jiao)叉電(dian)(dian)(dian)(dian)場強度(du)過流(liu)保護(hu)電(dian)(dian)(dian)(dian)流(liu)的(de)(de)突破。如(ru)果(guo)定(ding)(ding)頻(pin)(pin)同(tong)步(bu)變頻(pin)(pin)電(dian)(dian)(dian)(dian)動機啟(qi)動的(de)(de)正(zheng)常運(yun)作，許(xu)多(duo)型號的(de)(de)過流(liu)保護(hu)電(dian)(dian)(dian)(dian)流(liu)就直到的(de)(de)存有，并對定(ding)(ding)頻(pin)(pin)同(tong)步(bu)變頻(pin)(pin)電(dian)(dian)(dian)(dian)動機電(dian)(dian)(dian)(dian)絕緣產(chan)生(sheng)了(le)嚴重性的(de)(de)有損。

PWM調(diao)配波行(xing)波過電(dian)(dian)流值導至(zhi)調(diao)頻直流無刷(shua)電(dian)(dian)機接地洛(luo)天依

目前四(si)川(chuan)變(bian)頻批(pi)發廠家發現(xian)，企業變(bian)頻廣泛的采用PWM調配技術性(xing)，PWM的(de)(de)(de)(de)(de)單激光(guang)(guang)(guang)脈沖(chong)(chong)激光(guang)(guang)(guang)信(xin)號(hao)波(bo)形(xing)參數頻(pin)點(dian)(dian)(dian)(dian)有控(kong)制開(kai)關(guan)按(an)鈕(niu)頻(pin)點(dian)(dian)(dian)(dian)和主要頻(pin)點(dian)(dian)(dian)(dian)五種形(xing)勢(shi)(shi)。各舉伴(ban)(ban)隨(sui)運(yun)(yun)(yun)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)運(yun)(yun)(yun)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)額(e)定相(xiang)線(xian)輸出(chu)功(gong)(gong)率(lv)(lv)(lv)衛星信(xin)號(hao)的(de)(de)(de)(de)(de)性(xing)傳遞(di)信(xin)息形(xing)勢(shi)(shi)為(wei)波(bo)的(de)(de)(de)(de)(de)形(xing)勢(shi)(shi)，PWM的(de)(de)(de)(de)(de)單激光(guang)(guang)(guang)脈沖(chong)(chong)激光(guang)(guang)(guang)信(xin)號(hao)運(yun)(yun)(yun)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)運(yun)(yun)(yun)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)額(e)定相(xiang)線(xian)輸出(chu)功(gong)(gong)率(lv)(lv)(lv)值(zhi)的(de)(de)(de)(de)(de)頂值(zhi)連續(xu)(xu)頻(pin)點(dian)(dian)(dian)(dian)會與控(kong)制開(kai)關(guan)按(an)鈕(niu)頻(pin)點(dian)(dian)(dian)(dian)保持著此次持續(xu)(xu)增長的(de)(de)(de)(de)(de)相(xiang)關(guan)。主要頻(pin)點(dian)(dian)(dian)(dian)直觀影(ying)晌運(yun)(yun)(yun)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)運(yun)(yun)(yun)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)額(e)定相(xiang)線(xian)輸出(chu)功(gong)(gong)率(lv)(lv)(lv)單激光(guang)(guang)(guang)脈沖(chong)(chong)激光(guang)(guang)(guang)信(xin)號(hao)導電(dian)性(xing)的(de)(de)(de)(de)(de)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)變成和直流(liu)變頻(pin)伺(si)服(fu)減速(su)(su)機的(de)(de)(de)(de)(de)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)速(su)(su)。伴(ban)(ban)隨(sui)直流(liu)變頻(pin)伺(si)服(fu)減速(su)(su)機和升壓(ya)器的(de)(de)(de)(de)(de)熱敏(min)電(dian)阻值(zhi)率(lv)(lv)(lv)歐亞于輸電(dian)線(xian)線(xian)的(de)(de)(de)(de)(de)熱敏(min)電(dian)阻值(zhi)率(lv)(lv)(lv)，故而在這(zhe)句(ju)話期間性(xing)傳遞(di)信(xin)息的(de)(de)(de)(de)(de)PWM單激光(guang)(guang)(guang)脈沖(chong)(chong)激光(guang)(guang)(guang)信(xin)號(hao)運(yun)(yun)(yun)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)運(yun)(yun)(yun)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)額(e)定相(xiang)線(xian)輸出(chu)功(gong)(gong)率(lv)(lv)(lv)因反射強(qiang)度波(bo)的(de)(de)(de)(de)(de)幫(bang)助而形(xing)成PWM過運(yun)(yun)(yun)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)運(yun)(yun)(yun)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)額(e)定相(xiang)線(xian)輸出(chu)功(gong)(gong)率(lv)(lv)(lv)能達雙頻(pin)伺(si)服(fu)減速(su)(su)機運(yun)(yun)(yun)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)運(yun)(yun)(yun)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)運(yun)(yun)(yun)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)額(e)定相(xiang)線(xian)輸出(chu)功(gong)(gong)率(lv)(lv)(lv)的(de)(de)(de)(de)(de)2倍。

反向電(dian)(dian)(dian)場疊加過電(dian)(dian)(dian)壓導致(zhi)變頻器直流電(dian)(dian)(dian)機絕緣電(dian)(dian)(dian)阻錯誤(wu)碼(ma)

外(wai)部(bu)鏈接的(de)(de)交(jiao)變(bian)電(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)做用(yong)可能讓 絕緣帶(dai)物料(liao)中(zhong)的(de)(de)正、負電(dian)(dian)(dian)(dian)(dian)勢導致一秒鐘的(de)(de)相較行動(dong)因此生成位移極(ji)(ji)(ji)化(hua)(hua)，這(zhe)樣極(ji)(ji)(ji)化(hua)(hua)是(shi)因為此時(shi)(shi)間異常短（越10-15-10-12s），而(er)也(ye)被(bei)(bei)(bei)被(bei)(bei)(bei)稱作那一瞬間位移極(ji)(ji)(ji)化(hua)(hua)。并且外(wai)電(dian)(dian)(dian)(dian)(dian)磁(ci)場(chang)(chang)(chang)強度也(ye)會(hui)使隔絕媒介(jie)的(de)(de)偶極(ji)(ji)(ji)帶(dai)來駐(zhu)(zhu)車(che)制(zhi)動(dong)機(ji)功用(yong)，那樣功用(yong)被(bei)(bei)(bei)被(bei)(bei)(bei)稱作偶極(ji)(ji)(ji)駐(zhu)(zhu)車(che)制(zhi)動(dong)機(ji)極(ji)(ji)(ji)化(hua)(hua)，那樣極(ji)(ji)(ji)化(hua)(hua)的(de)(de)時(shi)(shi)期有所(suo)不同之(zhi)處(chu)位移極(ji)(ji)(ji)化(hua)(hua)，它的(de)(de)時(shi)(shi)期相相當極(ji)(ji)(ji)慢（10-10-10-2s），而(er)也(ye)叫松軟極(ji)(ji)(ji)化(hua)(hua)。然而(er) 變(bian)頻式(shi)發電(dian)(dian)(dian)(dian)(dian)機(ji)的(de)(de)PWM脈沖激光電(dian)(dian)(dian)(dian)(dian)阻值波的(de)(de)速度在(zai)好幾(ji)千HZ到好幾(ji)千HZ相互之(zhi)間，而(er)其期限(xian)就很短（10-5-10-3S），都已經(jing) 能否滿足(zu)偶極(ji)(ji)(ji)駐(zhu)(zhu)車(che)制(zhi)動(dong)機(ji)極(ji)(ji)(ji)化(hua)(hua)的(de)(de)時(shi)(shi)期，而(er)使誘發隔絕中(zhong)的(de)(de)電(dian)(dian)(dian)(dian)(dian)荷量轉讓帶(dai)來的(de)(de)電(dian)(dian)(dian)(dian)(dian)磁(ci)場(chang)(chang)(chang)強度滯(zhi)后性(xing)，而(er)了與(yu)外(wai)電(dian)(dian)(dian)(dian)(dian)磁(ci)場(chang)(chang)(chang)強度朝向(xiang)相符的(de)(de)方向(xiang)電(dian)(dian)(dian)(dian)(dian)磁(ci)場(chang)(chang)(chang)強度，而(er)使帶(dai)來方向(xiang)電(dian)(dian)(dian)(dian)(dian)磁(ci)場(chang)(chang)(chang)強度附加(jia)過電(dian)(dian)(dian)(dian)(dian)阻值。