Publication detail

SELECTED CHARACTERISTICS AND DIAGNOSTICS OF MOTOR POWERED BY FREQUENCY CONVERTER

NAHODIL, P. HAMMER, M.

Original Title

SELECTED CHARACTERISTICS AND DIAGNOSTICS OF MOTOR POWERED BY FREQUENCY CONVERTER

Type

journal article in Scopus

Language

English

Original Abstract

All of the technical devices that are powered by the frequency converter, apart from their great advantages, also bring considerable pitfalls and risks. When designing a machinery, it is necessary to consider the negative effects of characteristics of the frequency converter on the rotating parts, especially on the bearings of motors, gearboxes, gears, seals, etc. These devices and their parts are usually exposed to the effects of capacitive and shaft currents that have a considerable impact on the reliability of machines and equipment. This article focuses on the reasons for the use of insulated bearing (or insulated coupling) for asynchronous motors and on the influence of the measures taken to eliminate the adverse effects on the rotating parts. The following is an example of the use of technical diagnostics to determine the condition of some parts of the machinery, the example is evaluated, conclusions are drawn and analysed.

Keywords

Frequency converter, parasitic current and voltage, shaft voltage, capacitive current, technical diagnostics, FFT spectrum of vibrations acceleration, vibro-diagnostics.

Authors

NAHODIL, P.; HAMMER, M.

Released

13. 12. 2017

Publisher

MM publishing, s.r.o. (2017)

Location

ČR

ISBN

1805-0476

Periodical

MM Science Journal

Number

5

State

Czech Republic

Pages from

2077

Pages to

2084

Pages count

7

URL

http://www.mmscience.eu/content/file/archives/MM_Science_201790.pdf

BibTex

@article{BUT142881,
  author="Petr {Nahodil} and Miloš {Hammer}",
  title="SELECTED CHARACTERISTICS AND DIAGNOSTICS OF MOTOR POWERED BY FREQUENCY CONVERTER 
",
  journal="MM Science Journal",
  year="2017",
  number="5",
  pages="2077--2084",
  doi="10.17973/MMSJ.2017\{_}12\{_}201790",
  issn="1805-0476",
  url="http://www.mmscience.eu/content/file/archives/MM_Science_201790.pdf"
}