Padmanaban Sanjeevikumar, J.L Febin Daya, and V Subbiah
Subjects
Electronic speed control, Vector control, General Computer Science, Computer science, Open-loop controller, Self-tuning, PID controller, Fuzzy logic, lcsh:QA75.5-76.95, Computational Mathematics, Wavelet, Control theory, Indirect Field Oriented Control, Wavelet-fuzzy, lcsh:Electronic computers. Computer science, Robustness, Induction motor, Induction Motor
Abstract
This paper presents a hybrid wavelet-fuzzy based multiresolution (MR) controller for robust speed control of induction motor. The discrete wavelet transform (DWT) is used to decompose the error between the actual speed and command speed of the induction motor drive in to different frequency components. A self-tuning fuzzy logic is used for online tuning of the controller parameters. The proposed controller has the ability of meeting the speed tracking requirements in the closed loop system. The complete indirect field oriented control scheme incorporating the proposed wavelet-fuzzy based MR controller is investigated theoretically and simulated under various dynamic operating conditions. Simulation results are compared with that of conventional PI controller and fuzzy based PI controller. The speed control scheme incorporating the proposed controller is implemented in real time using the digital processor (DSP) control board. Simulation and experimental results validates the effectiveness of the proposed controller over conventional controllers and proves to be more suitable for high performance applications.
Published
1970
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