NDLI: Design of a closed-loop controller for mitigation of torque ripple in a brushless DC machine

Content Provider	IEEE Xplore Digital Library
Author	Beccue, P. Pekarek, S. Neely, J. Stutts, D.
Copyright Year	2003
Description	Author affiliation: Dept. of Electr. Eng., Univ. of Missouri-Rolla, Rolla, MO, USA (Beccue, P.; Pekarek, S.)
Abstract	Brushless DC machines with nonsinusoidal back-emf are often characterized by significant torque ripple that occurs as a result of the interaction of back-emf and stator current harmonics, as well as cogging torque. In this paper, a method of mitigating the torque ripple is described that utilizes closed-loop feedback control. Specifically, the torque ripple produced by a machine is measured using a piezoelectric sensor. The sensor is constructed from polyvinylidene fluoride (PVDF) film, which produces a voltage in response to subtle strains in the motor housing. The sensed torque ripple provides a feedback that is used to determine stator current harmonics utilizing a controller that is based upon cost function minimization. Simulation and experimental results are used to demonstrate the effectiveness of the control technique.
Starting Page	1664
Ending Page	1670
File Size	648410
Page Count	7
File Format	PDF
ISBN	0780377540
ISSN	02759306
DOI	10.1109/PESC.2003.1217707
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-06-15
Publisher Place	Mexico
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Torque control DC machines Stators Forging Feedback control Torque measurement Piezoelectric films Voltage Capacitive sensors Cost function
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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