NDLI: Study of DC motor diagnosis based on the vibration spectrum and current analysis

Content Provider	IEEE Xplore Digital Library
Author	Iorgulescu, M. Beloiu, R.
Copyright Year	2012
Description	Author affiliation: Electrical Engineering Department, University of Pitesti, Romania (Iorgulescu, M.; Beloiu, R.)
Abstract	In this paper fault detection of permanent magnet dc motor is described. In past, Current Signature Analysis (CSA) has become an established tool for online fault analysis of AC induction motors. Presently, very little research has been performed using current signature analysis on DC motors. This paper is a brief introduction to fault diagnosis of DC motors using vibration and current signature analysis. In order to do the diagnostics there are analyzed vibration from the piezoelectric accelerometer. The accelerometer is mounted on the frame's motor. Also, for the current measurement it's used ampere sensor. Initially the measurements were realized by using “healthy” DC motor. Then we made successive measurements for the same type of motor with provoked faults. The many faults of DC motors are regarding collectors motor, the commutator short circuit and displaced permanent magnet out of poles in polar axe. We observe significant vibration and also current spectrum differences between “healthy” motors and faulty electrical motor. The spectral analysis of current and vibration provides a method to detect DC motors faults. Using these methods, diagnostic of commutator short circuit and displaced permanent magnet out of poles in polar axe, would be detected even if the motor operated unload.
Starting Page	1
Ending Page	4
File Size	235121
Page Count	4
File Format	PDF
ISBN	9781467318099
e-ISBN	9781467318105
DOI	10.1109/ICATE.2012.6403430
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-25
Publisher Place	Romania
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vibrations Induction motors Current measurement DC motors Permanent magnet motors Permanent magnets Circuit faults
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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