Signal injection as a fault detection technique
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Cita com:
hdl:2117/12501
Tipus de documentArticle
Data publicació2011-03
Condicions d'accésAccés obert
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Reconeixement 3.0 Espanya
Abstract
Double frequency tests are used for evaluating stator windings and analyzing the
temperature. Likewise, signal injection on induction machines is used on sensorless motor
control fields to find out the rotor position. Motor Current Signature Analysis (MCSA),
which focuses on the spectral analysis of stator current, is the most widely used method for
identifying faults in induction motors. Motor faults such as broken rotor bars, bearing
damage and eccentricity of the rotor axis can be detected. However, the method presents
some problems at low speed and low torque, mainly due to the proximity between the
frequencies to be detected and the small amplitude of the resulting harmonics. This paper
proposes the injection of an additional voltage into the machine being tested at a frequency
different from the fundamental one, and then studying the resulting harmonics around the
new frequencies appearing due to the composition between injected and main frequencies.
CitacióCusido, J. [et al.]. Signal injection as a fault detection technique. "Sensors", Març 2011, vol. 11, núm. 3, p. 3356-3380.
ISSN1424-8220
Versió de l'editorhttp://www.mdpi.com/1424-8220/11/3/3356/
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