三菱 A173UHCPU
對于6極9槽電機,槽電角度為3*360/9=120度,因此相鄰槽就是相鄰相。對于圖中的1,2,3齒分別引出導(dǎo)線,終定義為ABC相。上面我們已經(jīng)計算好了1,2-2,3-3,1之間的電角度是120度,但是我們不知道是超前還是滯后關(guān)系。
如果電機順時針旋轉(zhuǎn),可以觀測反電勢的峰值,1齒先達到峰值,然后是2齒,然后是3齒。那么我們接線就可以1A 2B 3C,這樣接線電機就是順時針旋轉(zhuǎn)的。該種方法的思路就是電機的反電勢相位關(guān)系是與給該相繞組通電的電源對應(yīng)的。
如果電機逆時針旋轉(zhuǎn),則3齒先達到峰值,然后是2齒,然后是1齒。所以接線就可以3A 2B 1C,這樣接線電機就是逆時針旋轉(zhuǎn)的。
其實電機旋轉(zhuǎn)方向是由相序決定的,相序即相與相的順序,而不是固定的位置,所以對應(yīng)123齒這種相序:ABC,CAB,BCA的接線方式在上述例子中電機的旋轉(zhuǎn)方向都是順時針的。對應(yīng)123齒:CBA,ACB,BAC的接線方式電機是逆時針旋轉(zhuǎn)的。
三菱 A173UHCPU
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