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題 名 | 一種感應電動機之新型轉速佔測器=A Novel Speed Observer for Induction Motor |
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作 者 | 陳秋麟; 李哲銘; 劉益華; | 書刊名 | 電力電子技術 |
卷 期 | 45 1998.06[民87.06] |
頁 次 | 頁77-83 |
專 輯 | 馬達研究之過去、現在與未來 |
分類號 | 448.22 |
關鍵詞 | 轉速估測器; 適應觀測器; 卡門濾波器; Speed observer; Adaptive observer; Kalman filter; |
語 文 | 中文(Chinese) |
中文摘要 | 本論文提出一種新的無轉速量測感應電動機轉速估測法則,取代傳統轉速量測裝 置所回授的轉速信號,在不需加裝轉速量測裝置的情況之下,依然能達成轉速的閉迴路控制 。所提方法是以傳統適應觀測器法所導出的轉速估測式為基礎,並以一個二階的卡門濾波器 法,利用量測的定子端電流修正轉子磁通估測值,最後將修正過的轉子磁通代回轉速估測式 以改善轉速估測結果。與降階型卡門濾波器法比較,本方法降低了計算的複雜度,並且在計 算量增加不大的情況之下,改善了傳統適應觀測器法的轉速估測結果。為了驗證此一所提方 法的正確性以及適用性,本文最後也將提出實驗結果以驗證所提出之轉速估測法則。 |
英文摘要 | This paper presents a new sensorless speed estimation method for induction motor, which replaces the feedback signal of conventional speed sensors. Using the proposed method, closed-loop speed control is accomplished without any speed measurement. The proposed method is based on an adaptive flux observer, in which a second-order Kalman filte is employed to modify the estimated rotor flux using the actually measured stator currents. The modified rotor flux estimate is substituted into the speed estimation equation derived in the adaptive observer to improve the speed estimation results. In comparison with the reduced-order Kalman filter method, the proposed method reduces the computation complexity. Moreover, the proposed method improves the accuracy of speed estimation compared with the conventional adaptive observer, while maintaining the computational load moderate. Experiments are also carried out to demonstrate the effectiveness and correctness of the proposed method. |
本系統中英文摘要資訊取自各篇刊載內容。