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Speed position estimation by demodulating rotor slot harmonics
Date
2011-11-11
Author
Keysan, Ozan
Metadata
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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It is well known that slotting harmonics exist in most of the electrical machines. These harmonics may supply valuable information for condition monitoring of bearings, windings or rotor bars. Utilization of these harmonics for rotor speed and position estimation is limited mainly due to long sampling periods required by spectral estimation techniques. In this study, a novel speed and position estimation method is proposed that does not need any kind of spectral estimation. In this approach extracting the required information can be done within a typical control cycle of a vector controlled drive algorithm. In the application of the method, higher order rotor slot harmonics have been utilized. The approach is explained in the paper and illustrated with experimental results.
Subject Keywords
Rotors
,
Harmonic analysis
,
Power harmonic filters
,
Coils
,
Estimation
,
Induction motors
,
Demodulation
URI
https://hdl.handle.net/11511/44720
DOI
https://doi.org/10.1109/icelmach.2010.5607856
Collections
Department of Electrical and Electronics Engineering, Conference / Seminar
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It is well known that slotting harmonics exist in most of the electrical machines. So far, these harmonics are mainly identified using spectral estimation techniques. However, this approach requires long sampling and computation periods. In this study, a novel speed and position estimation method based on identification of rotor slot harmonics (RSH) that does not require any kind of spectral analysis is proposed. The required information is extracted by demodulating the information available in an external ...
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O. Keysan, “Speed position estimation by demodulating rotor slot harmonics,” 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/44720.