Access the full text.
Sign up today, get DeepDyve free for 14 days.
F. Perisse, P. Werynski, D. Roger (2007)
A New Method for AC Machine Turn Insulation Diagnostic Based on High Frequency ResonancesIEEE Transactions on Dielectrics and Electrical Insulation, 14
S. Campbell, G. Stone, H. Sedding, G. Klempner, W. McDermid, R.G. Bussey (1994)
Practical online partial discharge tests for turbine generators and motorsIEEE Power Engineering Review, 14
A. Kheirmand, M. Leijon, S. Gubanski (2004)
Advances in online monitoring and localization of partial discharges in large rotating machinesIEEE Transactions on Energy Conversion, 19
D. Thailly, R. Romary, J. Brudny (2005)
Quantitative analysis of the external radial magnetic field for detection of stator inter-turn short-circuit in induction machines2005 European Conference on Power Electronics and Applications
A. Boglietti, A. Cavagnino, M. Lazzari (2007)
Experimental High-Frequency Parameter Identification of AC Electrical MotorsIEEE Transactions on Industry Applications, 43
S. Duchesne, E. Napieralska-Juszczak, D. Roger (2007)
Eddy current influence on electromagnetic emissions of laminated coresCompel-the International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 26
R. Tallam, Sang Lee, G. Stone, G. Kliman, Jiyoon Yoo, T. Habetler, R. Harley (2007)
A Survey of Methods for Detection of Stator-Related Faults in Induction MachinesIEEE Transactions on Industry Applications, 43
H. Sedding, S. Campbell, G. Stone, G. Klempner (1991)
A new sensor for detecting partial discharges in operating turbine generators
Purpose – This paper aims to propose a high‐frequency (HF) model able to compute the flux density in the vicinity of the laminated stator core of an AC machine. Design/methodology/approach – Experiments form the main approach. Analytical results previously obtained with a simplified rectangular laminated structure are confirmed with a standard cylindrical magnetic core. Findings – Three frequency domains are defined, depending on the skin depth relative to the thickness of the magnetic sheets. A methodological approach is proposed for each domain. For higher frequencies, the magnetic core can be considered as transparent for external field computation. Research limitations/implications – The HF model is valid for skin depths much lower than the thickness of the magnetic sheets. Practical implications – The proposed HF model provides a link between the weak field measured in the natural void existing between the stator core and the housing of large electrical machines. With such a link, it is possible to develop a new monitoring system able to detect and to localize the partial discharges in the stator winding of a large machine. Originality/value – The low‐frequency limit of the model has been measured. It corresponds to a ratio of 1/40 between the skin depth and the magnetic sheet thickness. Therefore this model offers a new perspective for maintenance applications.
COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering – Emerald Publishing
Published: Jul 11, 2008
Keywords: Eddy currents; Electric machines; Electromagnetism
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.