滑模轉子磁通估測器與新型電流控制器應用於無轉速感測器的感應馬達向量控制系統之研究

本論文針對感應馬達直接式向量控制系統，提出一個無轉速感測器的系統架構。論文中採用了一個對參數變動具有強健性的滑模轉子磁通估測器，它是建立在一個順滑模態定子電流估測器的基礎上，當估測的電流誤差趨近於零時，轉子磁通即可直接由電流估測器的控制力積分得到，並不需要使用馬達參數。換句話說，滑模磁通估測器對馬達參數具有不靈敏的特性。一般在磁場導向控制中，常會使用PI電流控制器去產生 - 軸的定子電壓命令，而調整PI電流控制器中的比例參數和積分參數是件費時的事。在本論文中採用一種新型的電流控制器，它不但不需用到回授的定子電流，又可以免去調整PI電流控制器參數的困擾。本論文結合了上述的新型電流控制器和滑模轉子磁通估測器，並將它們應用在無轉速感測器感應馬達的速度及位置控制上。首先利用MATLAB /Simulink軟體進行模擬驗證所提出的控制策略的可行性，再實際組裝一組以個人電腦為基礎的實驗系統，來測試整個系統的各項特性。

關鍵字

感應馬達；無轉速感測器；新型電流控制器；直接式向量控制；順滑模態磁通估測器

並列摘要

A speed sensorless system is proposed for direct vector control of induction motor drives. In this thesis, based on a sliding mode stator current observer, a sliding mode rotor flux observer is adopted. Rotor flux is merely integrated from the control input of the current observer when the estimated current error approaches zero. In other words, the sliding mode observer is insensitive to motor parameters variations. In general, a PI current controller is often used in field oriented control scheme to produce the stator voltage command. It is time-consuming to tune the proportional control and integral control parameters of the PI current controller. A new current controller is used in this thesis. Feedback stator current information and tunning the PI control parameters are not required in the new current controller. Then, the aforementioned new current controller and the sliding mode rotor flux observer are applied to a speed sensorless induction motor drives for speed and position control. First, the proposed control scheme has evaluated by MATLAB/Simulink simulation toolbox. Then, a PC-based experimental system is constructed to test the performances of the overall system.

並列關鍵字

induction motor ； speed sensorless ； new current controller ； vector control ； sliding mode flux observer

參考文獻

[21] 吳永裕，“具滑模轉子磁通估測器與滑模電流控制器之感應馬達速度驅動系統研製”，碩士論文，電機工程系，崑山科技大學， 2005。

[23] 陳伯峰，“改良型磁通估測器應用於無轉速感測器的感應馬達純量控制系統之研製”，碩士論文，電機工程系，崑山科技大學，2006。

[1] M. Vasudevan and R. Arumugam, “Different Viable Torque Control Schemes of Induction Motor for Electric Propulsion Systems,” 39th IAS Annual Meeting Conference Record, Vol. 4, pp. 2728-2737, Oct. 2004.

[2] H. Tajima and Y. Hori, “Speed Sensorless Field-Oriented Control of The Induction Machine,” IEEE Trans. on Ind. Appl., Vol. 29, No. 1, pp. 175-180, Jan./Feb. 1993.

[3] P. L. Jansen, R. D. Lorenz and D. W. Novotny, “Observer-Based Direct Field Orientation: Analysis and Comparison of Alternative Method,” IEEE Trans. on Ind. Appl., Vol. 30, No. 4, pp. 945-953, July/Aug. 1994.

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滑模轉子磁通估測器與新型電流控制器應用於無轉速感測器的感應馬達向量控制系統之研究

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