Computation of No-Load Electromagnetic Rotor Losses in High-Speed
Computation of No-Load Electromagnetic Rotor Losses in High-Speed
Travelling wave harmonics of flux density on the rotor surface of a high-speed PM machine, caused by stator slotting, can produce substantial losses. A method is presented for calculating these losses, accounting for the true heteropolar nature of the problem. Harmonic waves are calculated by double FFT analysis of flux density data at the rotor surface, obtained from typically 60 magnetostatic solutions for different rotor positions. Electromagnetic losses for each harmonic are calculated using a 5-layer travelling current-sheet model. Results show that losses are strongly dependent on the sizes of airgap, magnet thickness, slot opening and slot pitch, and material properties.
715-16
Sharkh, Suleiman M Abu
7a6d4878-5419-44d0-80fb-be5b7cb4b03f
Harris, Martyn R
50b4d180-1d54-4633-8257-b498a425a0ea
Irenji, Neamat Taghizadeh
e553dadd-bd42-44c9-afbc-37a1b003e825
November 1997
Sharkh, Suleiman M Abu
7a6d4878-5419-44d0-80fb-be5b7cb4b03f
Harris, Martyn R
50b4d180-1d54-4633-8257-b498a425a0ea
Irenji, Neamat Taghizadeh
e553dadd-bd42-44c9-afbc-37a1b003e825
Sharkh, Suleiman M Abu, Harris, Martyn R and Irenji, Neamat Taghizadeh
(1997)
Computation of No-Load Electromagnetic Rotor Losses in High-Speed.
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Conference or Workshop Item
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Abstract
Travelling wave harmonics of flux density on the rotor surface of a high-speed PM machine, caused by stator slotting, can produce substantial losses. A method is presented for calculating these losses, accounting for the true heteropolar nature of the problem. Harmonic waves are calculated by double FFT analysis of flux density data at the rotor surface, obtained from typically 60 magnetostatic solutions for different rotor positions. Electromagnetic losses for each harmonic are calculated using a 5-layer travelling current-sheet model. Results show that losses are strongly dependent on the sizes of airgap, magnet thickness, slot opening and slot pitch, and material properties.
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Published date: November 1997
Organisations:
Electronics & Computer Science
Identifiers
Local EPrints ID: 254470
URI: http://eprints.soton.ac.uk/id/eprint/254470
PURE UUID: ab01bc3e-e4e0-4b1d-ac14-95fa6cb3621e
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Date deposited: 06 Apr 2001
Last modified: 10 Dec 2021 20:38
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Contributors
Author:
Suleiman M Abu Sharkh
Author:
Martyn R Harris
Author:
Neamat Taghizadeh Irenji
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