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Author Jinkyu Yang ♦ Sang Bin Lee ♦ Jiyoon Yoo ♦ Sanghoon Lee ♦ Yongmin Oh ♦ Changho Choi
Sponsorship IEEE Power Electronics Society
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©1986
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science ♦ Social sciences ♦ Commerce, communications & transportation ♦ Natural sciences & mathematics ♦ Physics ♦ Electricity & electronics ♦ Modern physics ♦ Technology ♦ Engineering & allied operations ♦ Applied physics ♦ Other branches of engineering
Subject Keyword Stator windings ♦ Condition monitoring ♦ Circuit testing ♦ Insulation testing ♦ Dielectrics and electrical insulation ♦ Thermal stresses ♦ Maintenance ♦ Quality assessment ♦ Pulse inverters ♦ Pulse width modulation inverters ♦ variable speed drives ♦ AC motor drives ♦ fault diagnosis ♦ leakage currents ♦ rotating machine insulation testing
Abstract Stator insulation quality assessment is an important issue for pulsewidth modulation inverter-fed machines, since the stator insulation is exposed to increased thermal/electrical stresses. In this paper, a new approach for monitoring the condition of the stator insulation for inverter-fed machines is proposed. The main concept of the proposed approach is to apply various types of test voltages to the motor stator insulation using the inverter, to perform standard offline insulation tests whenever the motor is not operating. Two methods for testing the insulation with modifications to the inverter circuit are proposed and verified experimentally. The results show that the proposed technique provides a simple low cost solution for detecting stator insulation degradation at an early stage for reliable operation of inverter-fed machine systems, since the insulation condition can be monitored frequently. This not only helps prevent forced outages and safety risks due to insulation breakdown, but also helps perform maintenance in an efficient manner since individual motor maintenance can be prioritized and scheduled based on its present condition.
Description Author affiliation :: Korea Univ., Seoul
ISSN 08858993
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2007-09-01
Publisher Place U.S.A.
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Volume Number 22
Issue Number 5
Size (in Bytes) 1.32 MB
Page Count 8
Starting Page 2026
Ending Page 2033

Source: IEEE Xplore Digital Library