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Failure analysis of a high-speed induction machine driven by a SiC-inverter and operating on a common shaft with a high-speed generator
Abstract
Due to ongoing research work, a prototype test rig for testing high-speed motors/generators has been developed. Its design is quite unique as the two high- speed machines share a single shaft with no support bearings between them. A very high maximum operating speed, up to 80,000 rpm, was required. Because of the need to minimise vibration during operation at very high rotational speeds, rolling bearings were used. To eliminate the influence of higher harmonics of supply voltage and current on the formation of torque oscillations on the shaft and excessive losses in the form of heat, a voltage source inverter with high switching silicon carbide (SiC) power transistors characterizing high precision of the output voltage generation with a fundamental harmonic frequency of several kilohertz has been used. During the first start-ups, it turned out that the system was not stable, and a failure occurred. The paper presents the consequences that may arise when a machine operating at a speed of about 70,000 rpm fails. The article contains pictures of a generator failure that occurred at a high rotational speed.
Citations
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Web of Science
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Authors (4)
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Łukasz Breńkacz dr inż.
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Paweł Bagiński dr inż.
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Sebastian Giziewski mgr inż.
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.17531/ein.2022.1.20
- License
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
Eksploatacja i Niezawodność - Maintenance and Reliability
no. 24,
pages 177 - 185,
ISSN: 1507-2711 - Language:
- English
- Publication year:
- 2022
- Bibliographic description:
- Breńkacz Ł., Bagiński P., Adamowicz M., Giziewski S.: Failure analysis of a high-speed induction machine driven by a SiC-inverter and operating on a common shaft with a high-speed generator// Eksploatacja i Niezawodność - Maintenance and Reliability -Vol. 24,iss. 1 (2022), s.177-185
- DOI:
- Digital Object Identifier (open in new tab) 10.17531/ein.2022.1.20
- Sources of funding:
-
- Free publication
- Verified by:
- Gdańsk University of Technology
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