根(gen)據YE2電(dian)(dian)機三相異步(bu)(bu)電(dian)(dian)動(dong)機電(dian)(dian)磁(ci)(ci)(ci)力定律，載流(liu)的(de)轉(zhuan)(zhuan)子導體在磁(ci)(ci)(ci)場(chang)中受到電(dian)(dian)磁(ci)(ci)(ci)力作(zuo)用，形成(cheng)電(dian)(dian)磁(ci)(ci)(ci)轉(zhuan)(zhuan)矩，驅(qu)動(dong)轉(zhuan)(zhuan)子旋(xuan)(xuan)轉(zhuan)(zhuan)，當電(dian)(dian)動(dong)機軸(zhou)上(shang)帶機械(xie)負載時，便向(xiang)外輸出機械(xie)能(neng)。電(dian)(dian)機的(de)轉(zhuan)(zhuan)速(su)(su)（轉(zhuan)(zhuan)子轉(zhuan)(zhuan)速(su)(su)）小于(yu)旋(xuan)(xuan)轉(zhuan)(zhuan)磁(ci)(ci)(ci)場(chang)的(de)轉(zhuan)(zhuan)速(su)(su)，從而叫(jiao)為異步(bu)(bu)電(dian)(dian)機。它和感(gan)應電(dian)(dian)機基本上(shang)是相同(tong)的(de)。YE2電(dian)(dian)機三相異步(bu)(bu)電(dian)(dian)動(dong)機的(de)轉(zhuan)(zhuan)速(su)(su)永遠低于(yu)旋(xuan)(xuan)轉(zhuan)(zhuan)磁(ci)(ci)(ci)場(chang)的(de)同(tong)步(bu)(bu)轉(zhuan)(zhuan)速(su)(su)，使(shi)轉(zhuan)(zhuan)子和旋(xuan)(xuan)轉(zhuan)(zhuan)磁(ci)(ci)(ci)場(chang)間有相對運(yun)動(dong)，從而保證轉(zhuan)(zhuan)子的(de)閉合導體切割磁(ci)(ci)(ci)力線，感(gan)生電(dian)(dian)流(liu)。轉(zhuan)(zhuan)速(su)(su)的(de)差異是異步(bu)(bu)電(dian)(dian)機運(yun)轉(zhuan)(zhuan)的(de)必要條件。在額定情況(kuang)下(xia)，轉(zhuan)(zhuan)子轉(zhuan)(zhuan)速(su)(su)一般比(bi)同(tong)步(bu)(bu)轉(zhuan)(zhuan)速(su)(su)低2-5%。

三(san)相異(yi)步電(dian)(dian)(dian)(dian)動機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)是(shi)在普通(tong)(tong)標準電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)基礎上(shang)，電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)加工廠家，將(jiang)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)轉(zhuan)子(zi)嵌入稀土(tu)永磁材料而成，電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)，與普通(tong)(tong)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)相比(bi)，具有以下八大優點：體積小(xiao)，重量輕，耗材少(shao)。由于(yu)稀土(tu)永磁材料的(de)高(gao)磁能積和高(gao)矯頑力(li)，電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)批(pi)發，實(shi)現(xian)了(le)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)磁路系統的(de)小(xiao)型化、輕量化。功率(lv)因(yin)數(shu)(shu)高(gao)。在稀土(tu)永磁電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)轉(zhuan)子(zi)中無感(gan)應電(dian)(dian)(dian)(dian)流(liu)勵(li)磁，定子(zi)繞組呈(cheng)現(xian)阻性負載，電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)功率(lv)因(yin)數(shu)(shu)接近1，減少(shao)了(le)定子(zi)電(dian)(dian)(dian)(dian)流(liu)，進一步提高(gao)了(le)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)效率(lv)，同時也節省電(dian)(dian)(dian)(dian)網1投資。

電機(ji)(ji)轉子由0.5mm厚硅(gui)鋼片(pian)疊壓成圓柱形鐵心，套裝在轉軸上(shang)，電機(ji)(ji)生(sheng)產廠家，其(qi)外圓表面沖有凹(ao)槽(cao)，用(yong)(yong)以放置(zhi)轉子繞組。轉子繞組可用(yong)(yong)銅條放在槽(cao)內，兩端再用(yong)(yong)兩個銅環(huan)焊接組成。若(ruo)不看鐵心這些銅條及端環(huan)的樣子很像一個鼠(shu)籠(long)，所以種電動機(ji)(ji)通常稱(cheng)為籠(long)型(xing)電動機(ji)(ji)，對于中(zhong)小功率的電動機(ji)(ji)，目前常用(yong)(yong)鑄鋁工藝把鼠(shu)籠(long)導(dao)條連(lian)同冷卻用(yong)(yong)的風扇(shan)葉(xie)片(pian)一同鑄成。