DocumentCode :
2809551
Title :
Reliability of the adjustable speed drives in power electronic waveform environment
Author :
Bocek, V. ; Kucerova, E. ; Mentlik, V. ; Sebik, P. ; Trnka, P.
Author_Institution :
West Bohemian Univ., Pilsen, Czech Republic
fYear :
2005
fDate :
16-19 Oct. 2005
Firstpage :
241
Lastpage :
244
Abstract :
Industrial controls have experienced dramatic changes in the past twenty years. Especially advances in adjustable speed drive technology are very well observable. However, this technology is an advantage for drive control; the voltage waveforms generated by power frequency converters may affect significantly the reliability of electric motor insulation system. It has been observed over voltage phenomenon, bearing currents, charge accumulation, partial discharges activity increasing due to the high frequency square waveform voltage generated by power converters. Any of above could case the electrical motor reliability decreasing. The result of this work shows how the life time of the electrical insulation material is significantly decreasing in high frequency square waveform voltage environment.
Keywords :
high-frequency discharges; industrial control; insulating materials; machine control; machine insulation; motor drives; partial discharges; power convertors; reliability; variable speed drives; adjustable speed drives; bearing currents; charge accumulation; drive control; electric motor insulation system; electrical insulation material; high frequency square waveform; industrial control; partial discharges; power electronic waveform; power frequency converters; reliability; Control systems; Dielectrics and electrical insulation; Electric motors; Frequency conversion; Industrial control; Power electronics; Power generation; Power system reliability; Variable speed drives; Voltage control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2005. CEIDP '05. 2005 Annual Report Conference on
Print_ISBN :
0-7803-9257-4
Type :
conf
DOI :
10.1109/CEIDP.2005.1560666
Filename :
1560666
Link To Document :
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