應用數位訊號控制器dsPIC30F4011於三相感應馬達速度控制之研究

The Speed Control of Three-Phase Induction Motor Using Digital Signal Controller dsPIC30F4011

江鴻展(Hung-chan Chiang)

指導教授 ： 黃昭明

崑山科技大學/工程學院/電機工程研究所/碩士(2008年)

摘要

本論文應用數位訊號控制器dsPIC30F4011於三相感應馬達的速度控制。三相感應馬達的速度控制方法可概分為向量控制與純量控制，前者具有較佳的控制性能，但數學式較複雜。因此在不苛求控制系統非常穩定的場合，純量控制形成系統設計人員的另一種選擇。
現今感應馬達的驅動控制大多以數位方式實現，本論文即是在數位訊號控制器的基礎架構上，分別以產業界較常使用的V/f控制法、PID控制法、及模糊控制法等純量控制進行感應馬達的速度控制。V/f控制具有架構簡單與控制策略容易實現的優點；PID控制在參數調整及穩定性上則具有較佳優勢；模糊控制對於系統存在高度非線性或微分方程不易獲得場合能提供一種較簡化的控制方式。
本論文利用一部小型感應馬達(1/2 Hp)進行實驗，以驗證所提出方法的可行性。為評估上述三種方法的控制性能，論文中分別在不同轉速命令下進行啟動特性及負載變動研究。此外，本論文中也利用VB軟體提供擬人化的人機介面，以方便使用者進行監控。

關鍵字

數位訊號控制器 ； 純量控制 ； 向量控制

並列摘要

This thesis applies digital signal controller (DSC) dsPIC30F4011 to the speed control of three-phase induction motor. The speed control method of three-phase induction motor comprises vector control and scalar control. The former has better control performance. But it needs complicated mathematical model to implement the control strategies. Therefore, the scalar control has come into being another option for system designer in which the control system is not severely requested to be very stable.
The digital control method has been widely used for induction motor at present. Based on DSC structure, this thesis applies V/f control, PID control, and Fuzzy control methods to the speed control of induction motor. The V/f control has the advantages of simple structure and easy implementation. In comparison with the other scalar control methods, the PID control has superior performances on parameters adjustment and control stability. The fuzzy control provides simpler control method than the other methods in which the system has highly non-linear characteristic or the differential equation can not be easily obtained.
To verify the feasibility of the proposed method, this thesis employs one small induction motor (1/2 Hp) to fulfill the experiments. For assessing the control performance of the above methods, the step response and load variation experiments are studied based on different speed commands. Furthermore, this thesis also uses Visual Basic (VB) software to provide the personification of man-machine interface that the users can further monitor the operation state of induction motor.

並列關鍵字

Digital signal controller ； Scalar control ； Vector control

參考文獻

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[3] A. Maamoun and M. M. Ahmed, “Microprocessor Control System for PWM IGBT Inverter Feeding Three-Phase Inductor Motor,” IEEE Proceedings of International Conference on Industrial Electronics, Control, and Instrumentation, Vol. 2, 6-10 Nov., 1995, pp. 1354-1359.

[4] K. Koga, R. Ueda, and T. Sonoda, “Constitution of V/f Control for Reducing the Steady-State Speed Error to Zero in Induction Motor Drive System,” IEEE Transactions on Industry Applications, Vol. 28, No. 2, March-April 1992, pp. 463 – 471.

[5] M. G. Alfredo, A. L. Thomas, and W. N. Donald, “A New Induction Motor V/F Control Method Capable of High-Performance Regulation at Low Speeds,” IEEE Transactions on Industry Applications, Vol. 34, July- August 1998, pp. 813-821.