產(chǎn)品展示
1785-L40L
點(diǎn)擊次數(shù)：8發(fā)布時(shí)間：2017/2/16 15:44:58
更新日期：2017/2/16 15:44:58
所 在 地：中國大陸
產(chǎn)品型號：1785-L40L
相關(guān)標(biāo)簽：1785-L40L
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詳細(xì)內(nèi)容
1785-L40L
1785-L40L
矢量控制變頻調(diào)速的做法是將異步電動(dòng)機(jī)在三相坐標(biāo)系下的定子電流Ia、Ib、Ic、通過三相－二相變換，等效成兩相靜止坐標(biāo)系下的交流電流Ia1Ib1，再通過按轉(zhuǎn)子磁場定向旋轉(zhuǎn)變換，等效成同步旋轉(zhuǎn)坐標(biāo)系下的直流電流Im1、It1（Im1相當(dāng)于直流電動(dòng)機(jī)的勵(lì)磁電流；It1相當(dāng)于與轉(zhuǎn)矩成正比的電樞電流），然后模仿直流電動(dòng)機(jī)的控制方法，求得直流電動(dòng)機(jī)的控制量，經(jīng)過相應(yīng)的坐標(biāo)反變換，實(shí)現(xiàn)對異步電動(dòng)機(jī)的控制。其實(shí)質(zhì)是將交流電動(dòng)機(jī)等效為直流電動(dòng)機(jī)，分別對速度，磁場兩個(gè)分量進(jìn)行獨(dú)立控制。通過控制轉(zhuǎn)子磁鏈，然后分解定子電流而獲得轉(zhuǎn)矩和磁場兩個(gè)分量，經(jīng)坐標(biāo)變換，實(shí)現(xiàn)正交或解耦控制。矢量控制方法的提出具有劃時(shí)代的意義。然而在實(shí)際應(yīng)用中，由于轉(zhuǎn)子磁鏈難以準(zhǔn)確觀測，系統(tǒng)特性受電動(dòng)機(jī)參數(shù)的影響較大，且在等效直流電動(dòng)機(jī)控制過程中所用矢量旋轉(zhuǎn)變換較復(fù)雜，使得實(shí)際的控制效果難以達(dá)到理想分析的結(jié)果。
V/F控制與矢量都是恒轉(zhuǎn)矩控制。U/F相對轉(zhuǎn)矩可能變化大一些。而矢量是根據(jù)需要的轉(zhuǎn)矩來調(diào)節(jié)的，相對不好控制一些。對普通用途。兩者一樣
備貨，備貨，降降降，火火火，火火火……
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公司名稱：廈門泰尼電氣有限公司
聯(lián)系人：小黃（銷售代表）
聯(lián)系電話：
傳真號碼：（麻煩備注01006收）
手機(jī)：18950191386
QQ號碼:2917675397
郵箱：2917675397@qq.com
誠信經(jīng)營，質(zhì)量為首，誠信至上，泰尼電氣小黃竭誠為您服務(wù)�。。�
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