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Appl. Sci. 2017, 7(9), 867; doi:10.3390/app7090867

Observer-Based Rejection of Cogging Torque Disturbance for Permanent Magnet Motors

1
Department of Electronic Engineering, Sungkyunkwan Univerity, Suwon 440-746, Korea
2
Korea Institute of Industrial Technology, Ansan 426-171, Korea
3
Samsung Electronics Co., Ltd., Hwaseong 18448, Korea
4
Department of Electronic Engineering, Sungkyunkwan Univerity, Suwon 440-746, Korea
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 9 July 2017 / Revised: 15 August 2017 / Accepted: 21 August 2017 / Published: 25 August 2017
(This article belongs to the Section Computer Science and Electrical Engineering)
View Full-Text   |   Download PDF [3221 KB, uploaded 25 August 2017]   |  

Abstract

In order to prove the speed regulation for permanent magnet motor systems, a control method is proposed to reject the disturbance by cogging torque, which arises from the interaction of the rotor magnets with the steel teeth on the stator. Toward this aim, we present a state observer with an internal model which has harmonics of sinusoids, and it follows from the proposed observer that the information of the cogging disturbance is obtained. It shows that the disturbance is efficiently compensated by a suitable additional control input based on the estimated information. Simulation and experimental results with an actual permanent magnet motor verify the effectiveness of the proposed observer-based algorithm. View Full-Text
Keywords: cogging torque; observer-based; disturbance rejection; internal model; permanent magnet motor cogging torque; observer-based; disturbance rejection; internal model; permanent magnet motor
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Nam, K.-T.; Kim, H.; Lee, S.-J.; Kuc, T.-Y. Observer-Based Rejection of Cogging Torque Disturbance for Permanent Magnet Motors. Appl. Sci. 2017, 7, 867.

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