Damage diagnostics in asynchronous motor bearings in mines / Safin N.R., Prakht V.A., Dmitrievsky V.A., Dmitrievsky A.A. // Gornyi Zhurnal. - 2017. - V. , l. 1. - P. 60-64.

ISSN:
00172278
Type:
Article
Abstract:
The article addresses the issues of the functional reliability of cage asynchronous motors. It is emphasized that the f rst reason of failure of the motors is the wear of bearings. There are a number of basic methods of equipment diagnostics: vibrational, electromagnetic and thermal. Alongside with them, it becomes popular to use the current method based on the analysis of the frequency-response characteristics of consumed current. This is a promising method as it allows measurements to be taken without intervention into normal operation of the motor. The current method based on the Park vectors enables accounting for all three phases of current consumed by a motor. In connection with this, capabilities of monitoring and diagnostics of failures in bearings of asynchronous motors using the Park vectors and the method of spectrum analysis of the stator currents are studied. The main aspects as well as the experimental results and their analyses are described. It is shown that the advanced diagnostics of asynchronous motors with regard to the stator current by the Park method allows early detection of defects in bearings. The authors identify the spectrum harmonic, divisible by the rotor speed, that have amplitudes clearly pronounced in operation of asynchronous motors with damaged bearings. This study has been supported by the Ural Federal University in the framework of the UFU Development Program for the winners of the UFU Young Scientists competition.
Author keywords:
Asynchronous motor; Bearing; Damage diagnostics; Mining equipment; Monitoring; Park method; Spectral analysis; Spectrogram
Index keywords:
нет данных
DOI:
10.17580/gzh.2017.01.13
Смотреть в Scopus:
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85012880314&doi=10.17580%2fgzh.2017.01.13&partnerID=40&md5=91af984b02e2667d8260fd73803aab13
Соавторы в МНС:
Другие поля
Поле Значение
Link https://www.scopus.com/inward/record.uri?eid=2-s2.0-85012880314&doi=10.17580%2fgzh.2017.01.13&partnerID=40&md5=91af984b02e2667d8260fd73803aab13
Affiliations Ural Federal University named after the First President of Russia B. N. Yeltsin, Ekaterinburg, Russian Federation
Author Keywords Asynchronous motor; Bearing; Damage diagnostics; Mining equipment; Monitoring; Park method; Spectral analysis; Spectrogram
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Publisher Ore and Metals" Publishing house"
Language of Original Document Russian
Abbreviated Source Title Gorn. Zh.
Source Scopus