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Abstract
A novel method is presented for the detection andisolation of open-transistor faults in voltage-source invertersfeeding low-power AC motors. The method is based onmonitoring two diagnostic signals, one indicating sustained nearzerovalues of output current and thus permitting fault detection,the other permitting the isolation of the particular transistorwhich went faulty. The latter signal is the ratio of the averagephase current and the average magnitude thereof. The methodproves to work reliably, enabling detection and isolation of allpossible cases of single and multiple faults. It enjoys highimmunity to transients and noise and requires no extra hardwareon top of that normally used for basic control purposes.
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Details
- Category:
- Conference activity
- Type:
- materiały konferencyjne indeksowane w Web of Science
- Title of issue:
- 6th IEEE International Symposium on Diagnostics for Electric Machines, Power Electronic and Drives, Cracow SDEMPED 2007, Poland, September 6-8, 2007 : proceedings. strony 70 - 73
- Language:
- Polish
- Publication year:
- 2007
- Bibliographic description:
- Śleszyński W., Nieznański J..: Open-transistor fault diagnostics in voltage-source inverters by analyzing the load current, W: 6th IEEE International Symposium on Diagnostics for Electric Machines, Power Electronic and Drives, Cracow SDEMPED 2007, Poland, September 6-8, 2007 : proceedings., 2007, Institute of Electrical and Electronics Engineers,.
- DOI:
- Digital Object Identifier (open in new tab) 10.1109/demped.2007.4393073
- Verified by:
- Gdańsk University of Technology
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