直(zhi)流變(bian)頻空(kong)調調壓(ya)直(zhi)流無刷(shua)電機(ji)運(yun)行時(shi)，電(dian)原電(dian)壓(ya)值過高或過低的變幻，對交流電(dian)動(dong)機啟動(dong)會有不良的后(hou)果。

當變頻調速電機運行工作(zuo)電(dian)壓過高（超過10%左右）時(shi)(shi)，鐵芯磁路呈(cheng)(cheng)現呈(cheng)(cheng)現飽(bao)和狀(zhuang)態狀(zhuang)態（為了在(zai)設計方(fang)案營造(zao)電(dian)動(dong)三輪伸縮機(ji)時(shi)(shi)，在(zai)載荷系(xi)數的(de)(de)(de)(de)的(de)(de)(de)(de)電(dian)壓下的(de)(de)(de)(de)磁路普通(tong)就在(zai)呈(cheng)(cheng)現呈(cheng)(cheng)現飽(bao)和狀(zhuang)態狀(zhuang)態點隨(sui)近），于(yu)是，主磁通(tong)的(de)(de)(de)(de)加(jia)(jia)入(ru)使激磁瞬時(shi)(shi)直流電(dian)壓驟降(jiang)加(jia)(jia)入(ru)（為自加(jia)(jia)的(de)(de)(de)(de)的(de)(de)(de)(de)電(dian)壓加(jia)(jia)入(ru)值的(de)(de)(de)(de)三四個倍)，于(yu)是使定子(zi)瞬時(shi)(shi)直流電(dian)壓變大，電(dian)動(dong)三輪伸縮機(ji)cpu過熱，以至于(yu)泄漏電(dian)流突(tu)破不得值而(er)焚(fen)毀。

當直(zhi)流變頻空調控(kong)速伺(si)服電機運行電(dian)(dian)(dian)(dian)流值過低（大于5%下）時，智(zhi)能(neng)(neng)機啟(qi)(qi)動(dong)(dong)傳動(dong)(dong)比(bi)成交流電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓(ya)(ya)平密切關系驟降(jiang)，一則消息使(shi)啟(qi)(qi)動(dong)(dong)啟(qi)(qi)動(dong)(dong)傳動(dong)(dong)比(bi)驟降(jiang)越來越多，智(zhi)能(neng)(neng)機啟(qi)(qi)動(dong)(dong)麻煩（啟(qi)(qi)動(dong)(dong)慢慢雖然啟(qi)(qi)動(dong)(dong)不了(le)來）；二(er)則稍(shao)后運營的(de)智(zhi)能(neng)(neng)機，若是(shi)負債不減(jian)（輕載(zai)或額定(ding)(ding)(ding)的(de)負債運營時），定(ding)(ding)(ding)子和電(dian)(dian)(dian)(dian)機定(ding)(ding)(ding)轉子快要(yao)保持穩(wen)定(ding)(ding)(ding)有必要(yao)的(de)電(dian)(dian)(dian)(dian)磁(ci)感應啟(qi)(qi)動(dong)(dong)傳動(dong)(dong)比(bi)來平衡點負債的(de)阻尼(ni)力矩。這就致使(shi)定(ding)(ding)(ding)子和電(dian)(dian)(dian)(dian)機定(ding)(ding)(ding)轉子交流電(dian)(dian)(dian)(dian)提高，因此(ci)會(hui)導致 定(ding)(ding)(ding)子交流電(dian)(dian)(dian)(dian)提高，會(hui)導致變(bian)頻(pin)變(bian)頻(pin)電(dian)(dian)(dian)(dian)動(dong)(dong)機電(dian)(dian)(dian)(dian)壓(ya)(ya)不穩(wen)，升(sheng)溫增多，縮小變(bian)頻(pin)電(dian)(dian)(dian)(dian)動(dong)(dong)機選用使(shi)用期，甚至是(shi)損毀變(bian)頻(pin)器可控硅調壓(ya)(ya)交流電(dian)(dian)(dian)(dian)動(dong)(dong)機。