無速度感測器之感應馬達驅動器的研製

Design and implementation of a sensorless induction motor drive

江坤霖(Kun-Lin Chiang)

指導教授 ： 賴炎生

國立臺北科技大學/電資學院/電力電子產業研發碩士專班/碩士(2010年)

https://doi.org/10.6841/NTUT.2010.00386

摘要

本論文探討應用於感應馬達控制器之速度估測器，應用高頻電壓信號注入原理在磁場導向控制上，實現感應馬達無量測器向量控制技術。本論文在無量測器向量控制，低速時利用在同步旋轉參考座標d軸電壓命令訊號中注入一高頻訊號，以高頻訊號與基本轉子磁通角訊號做高頻調變作用，然後從定子電流訊號差估測同步轉速及估測轉子磁通角，再配合滑差估測即可求得估測轉子轉速。
本論文在實作方面，以 dSPACE 數位訊號處理器控制板，發展控制軟體及相關之介面。實驗系統包括了:變頻器、感應機實驗裝置及數位訊號處理控制板。由實驗結果顯示，高頻電壓信號注入法應用於無量測器向量控制，具有良好的追隨特性及負載抗拒之能力。

關鍵字

感應馬達 ； 高頻注入 ； 無速度感測器

並列摘要

The objective of this thesis is to design and implementation a sensorless induction motor drive. In order to find the rotor flux angle from stator voltages and currents by injecting high frequency signal. The difference of impedances between d axis and q axis of the measurement reference frame is introduced by analyzing the equivalent circuit of the induction machine. Using the difference of impedances caused by signal injecting to track the rotor flux angle and estimate synchronous speed.
Experimental system of this thesis includes inverter, induction machine, digital signal interface CP1104 and dSPACE DS1104. The experimental results show that the high frequency injection method has stable performance, even under heavily loaded condition.

並列關鍵字

induction motor ； signal injection ； sensorlesss control

參考文獻

[1] Y. S. Lai, “Machine modeling and universal controller for vector-controlled induction motor drives,” IEEE Trans. on Energy Conversion, Vol.18, No.1, pp.23-32, Mar. 2003.

[2] Y. S. Lai and Y. T. Chang, “Design and implementation of vector-controlled induction motor drives using random switching technique with constant sampling frequency,” IEEE Trans. on Power Electronics, Vol.16, No.3, pp.400-409, May. 2001.

[4] J. Holtz, “Sensorless control of induction machines – with or without signal injection,” IEEE Trans. on Industrial Electronics, Vol.53, No.1, pp.7-30, Feb. 2006.

[5] T. Ohtani, N. Takada, and K. Tanaka, “Vector control of induction motor without shaft encoder,” IEEE Trans. Ind. Appl., vol.28, No.1, pp.157-165, Jan./Feb. 1992.

[6] W. C. Pu and C. H. Liu, “Stabilization of regenerating mode at low speeds for adaptive speed sensorless induction motor drives,” Journal of the Chinese Institute of Engineers, Vol.33, No.2, pp.229-242, 2010.