FDS4270/B廠家報價
矢量控制技術(shù)通過坐標(biāo)變換，將三相系統(tǒng)等效變換為M－T兩相系統(tǒng)，將交流電機(jī)定子電流矢量分解成兩個直流分量（即磁通分量和轉(zhuǎn)矩分量），從而達(dá)到分別控制交流電動機(jī)的磁通和轉(zhuǎn)矩的目的，因而可獲得與直流調(diào)速系統(tǒng)同樣好的控制效果。
矢量控制系統(tǒng)采用雙閉環(huán)控制系統(tǒng)，圖1是其矢量控制系統(tǒng)框圖。
本系統(tǒng)中由測量所得的電機(jī)轉(zhuǎn)速，通過矢量運算器產(chǎn)生磁場定向定子電流分量給定值和滑差角頻度給定值和測量所得的電機(jī)轉(zhuǎn)速經(jīng)過積分運算可得轉(zhuǎn)子磁通位置角θ，并送至旋轉(zhuǎn)變換環(huán)節(jié)。由測得的電流經(jīng)矢量變換得到轉(zhuǎn)矩電流分量iM和勵磁電流分量iT，利用
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