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
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.
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
- Tieteelliset julkaisut 
Näytetään aineisto, joilla on samankaltaisia nimekkeitä, tekijöitä tai asiasanoja.
Ushakumari, Devika Sasi (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 ...
Egorov, Dmitry; Petrov, Ilya; Pyrhönen, Juha; Link, Joosep; Stern, Raivo; Sergeant, Peter; Sarlioglu, Bulent (IEEE, 14.01.2021)Most permanent-magnet (PM) loss studies consider only eddy current loss and neglect hysteresis. In this paper, the hysteresis behavior of two NdFeB PM grades with different magnetic properties is assessed when applied in ...
Increasing the air-gap magnetic flux density to generate a higher torque in permanent magnet synchronous machines Pokharel, Bikarna (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 ...