Hysteresis Losses in Sintered NdFeB Permanent Magnets in Rotating Electrical Machines
Pyrhönen, Juha; Ruoho, Sami; Nerg, Janne; Paju, Martti; Tuominen, Sampo; Kankaanpää, Harri; Stern, Raivo; Boglietti, Aldo; Uzhegov, Nikita (2015)
Post-print / final draft
2015
This publication is protected by copyright. You may download, display and print it for Your own personal use. Commercial use is prohibited.
Julkaisun pysyvä osoite on
http://urn.fi/URN:NBN:fi-fe201504132543
http://urn.fi/URN:NBN:fi-fe201504132543
Tiivistelmä
Permanent magnet materials are nowadays widely
used in the electrical machine manufacturing industry. Eddy
current loss models of permanent magnets used in electrical
machines are frequently discussed in research papers. In
magnetic steel materials we have, in addition to eddy current
losses, hysteresis losses when AC or a rotating flux travels
through the material.
Should a similar phenomenon also be taken into account in
calculating the losses of permanent magnets? Actually, every now
and then authors seem to assume that some significant hysteresis
losses are present in rotating machine PMs. This paper studies
the mechanisms of possible hysteresis losses in PMs and their role
in PMs when used in rotating electrical machines.
used in the electrical machine manufacturing industry. Eddy
current loss models of permanent magnets used in electrical
machines are frequently discussed in research papers. In
magnetic steel materials we have, in addition to eddy current
losses, hysteresis losses when AC or a rotating flux travels
through the material.
Should a similar phenomenon also be taken into account in
calculating the losses of permanent magnets? Actually, every now
and then authors seem to assume that some significant hysteresis
losses are present in rotating machine PMs. This paper studies
the mechanisms of possible hysteresis losses in PMs and their role
in PMs when used in rotating electrical machines.
Lähdeviite
Juha Pyrhönen, Sami Ruoho, Janne Nerg, Martti Paju, Sampo Tuominen, Harri Kankaanpää, Raivo Stern, Aldo Boglietti, Nikita Uzhegov (2015) Hysteresis Losses in Sintered NdFeB Permanent Magnets in Rotating Electrical Machines. IEEE Transactions on Industrial Electronics 01/2015; 62(2):857-865. DOI:10.1109/TIE.2014.2354597
Kokoelmat
- Tieteelliset julkaisut [587]
Samankaltainen aineisto
Näytetään aineisto, joilla on samankaltaisia nimekkeitä, tekijöitä tai asiasanoja.
-
Parametric tool for initial estimation of thermal and mechanical stress in high speed rotors
(2018)Bearingless drives magnetically integrate magnetic bearing and motor function. They offer non-contaminating working environment, are maintenance free and generally have long lifetime. Bearingless drives is a good choice ... -
Wind Turbine Direct-Drive Permanent-Magnet Generator with Direct Liquid Cooling for Mass Reduction
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 25.06.2014)Today’s electrical machine technology allows increasing the wind turbine output power by an order of magnitude from the technology that existed only ten years ago. However, it is sometimes argued that high-power direct-drive ... -
Increasing the air-gap magnetic flux density to generate a higher torque in permanent magnet synchronous machines
(2017)The main objective of this thesis is to investigate the air-gap magnetic flux density and the torque output of a permanent magnet synchronous motor with embedded magnet rotors. In the beginning, variation of the air-gap ...
