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Toward Less Rare-Earth Permanent Magnet in Electric Machines: A Review.
- Source :
-
IEEE Transactions on Magnetics . Sep2021, Vol. 57 Issue 9, p1-19. 19p. - Publication Year :
- 2021
-
Abstract
- Many electric traction drive systems (ETDSs) are driven by electric motors primarily composed of high-energy rare-earth (RE) permanent magnets (PMs), such as neodymium–iron–boron (NdFeB) and samarium–cobalt (SmCo). Given the high cost of RE materials, there is a great interest among various industry sectors in searching for breakthrough technologies that reduce the consumption of high-energy RE magnets in their electromechanical energy conversion systems. The reduction of the magnetic volume is typically realized either by replacing a portion of the high-energy RE magnet with the low-energy ferrite magnet (knows as hybrid structure) or by modifying the magnetic arrangement of the machine itself, where a portion of the physical RE magnets is removed and replaced by induced magnets (known as consequent-magnetic pole structure). For this purpose, this article presents a review of the current state-of-the-art motor typologies with less-RE PMs and their key design challenges, followed up by a series of recommended guidelines to overcome related design challenges. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PERMANENT magnets
*ELECTRIC machines
*ELECTRIC motors
*ELECTRIC drives
*MAGNETS
Subjects
Details
- Language :
- English
- ISSN :
- 00189464
- Volume :
- 57
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Magnetics
- Publication Type :
- Academic Journal
- Accession number :
- 153187932
- Full Text :
- https://doi.org/10.1109/TMAG.2021.3095615