點擊圖片查看大圖A16B-1210-0410/ 03A W/ A16B-1310-0300/ 03A
Lathe SLDS-3A _ 09-03-02-01 _ SLDS3A 09030201
Lathe SLDS-3A _ 09-03-02-01 _ SLDS3A 09030201
X67DO9332.L12
該結構是在電機的軸上裝有一個磁環，它一般有6極磁環及2極磁環2種。當電機轉子旋轉一圈時，磁環也旋轉一圈，磁環與PG板中的霍爾元件相感應，6極磁環會在PG板的OUTPUT（白）腳中輸出3個脈沖，2極磁環會輸出1個脈沖，這樣根據輸出脈沖的數量就可以知道電機的轉速。在電控中設定有預定的轉速值，將它與從PG塊中采樣取得的轉速值相比較，當轉速偏低時，則提高電控的輸出電壓（可控硅導通角變大），當轉速偏高時，則降低電控的輸出電壓（可控硅導通角變小），這樣通過PG信號的反饋調節電控輸出電壓就實現了對電機的平滑調速。由于電控的輸出電壓不會高于其輸入電壓，因此在電機設計時要保證電機達到高風檔的轉速時其電控的電壓不高于工作的額定電壓。如我國額定電壓為220VAC，則設計時的電控電壓一般設計為180VAC~200VAC左右。此參數值設定太低則造成電機材料浪費，且電控若損壞擊穿后電機直通市網電壓，其電機溫升會較高；若此參數值設定過高則會造成市網電壓降低時，有可能達不到設定的額定轉速，影響空調的能力
抽頭調速
電容運轉電動機在調速范圍不大時，普遍采用定子繞組抽頭調速。此時定子槽中放置有主繞組、副繞組及調速繞組，通過改變調速繞組與主、副繞組的聯接方式，調整氣隙磁場大小及橢圓度來實現調速的目的。
也可以將整個板子上數字和模擬部分的電源分別聯在一起，用分別的通路直接接到電源濾波電容的焊點上。
一般電容運轉單相電機，主繞組與副繞組嵌在不同的槽中，繞組與鐵芯間由聚酯纖維無紡布（DMDM或DMD）隔開，其在空間一般相差90度電角度，且副繞組通過串聯一個工作電容器后與主繞組并接于電源。當電機通電后，主繞組與副繞組在氣隙***同形成一個有方向有幅值強度的旋轉磁場。其方向與主、副繞組所處的空間位置等有關，它決定了電機的轉向；其幅值強度則與主副繞組的參數設計有關，它決定了電機輸出力矩的大小。該旋轉磁場與轉子鼠籠轉子相互作用，使電動機按一定的方向旋轉。若調換主副繞組的空間位置，則旋轉磁場的旋轉方向會相反，該反方向的旋轉磁場與轉子相互作用，使電動機的轉向也會相反。
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福州卓凱電子科技有限公司
24小時銷售技術服務熱線 ：15506917382? 0591-62182535
傳真（Fax）：0591-22989937
商務QQ ：583745937
聯系人： 王工（ 銷售工程師 ）
地址：福州市閩侯西江濱大道77號正榮潤園一號樓1205室
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