本文研究了用電壓矢量變頻器和感應(yīng)電動機構(gòu)成的變頻電動機系統(tǒng)。通過對該閉環(huán)控制系統(tǒng)數(shù)學(xué)模型的建立,推導(dǎo)出了它的傳遞函數(shù)。它有著與可控硅直流調(diào)速系統(tǒng)極其相似的傳遞函數(shù),因而可用直流電動機的閉環(huán)控制對該系統(tǒng)加以控制。通過實際的測試,得到比較滿意的結(jié)果。
[關(guān)鍵詞] 感應(yīng)電動機;變頻器;傳遞函數(shù);閉環(huán)控制
Abstract: In this paper, we present a frequency conversion electromotor system organized by
voltage vector transducer and induction-motor. We export the transfer-function of the close-loop control system by establishing its mathematic model. Because of the surprising similitude of the transfer-functions of the close-loop control system and the controllable silicon timing system, we can control the system using the close-loop control of DC electromotor. We also obtain satisfied result by actual testing.
Keywords: induction-motor, transducer, transfer-function, close-loop control