Effect of tooth tips on the electromagnetic performance of PM fractional-slot modular machines using grain-oriented electrical steel

• Published in: Journal of engineering (Stevenage, England) Vol. 2019; no. 17; pp. 4386 - 4390
• Main Authors: Maraví-Nieto, Jaime, Azar, Ziad, Thomas, Arwyn S, Zhu, Zi-Qiang
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 01.06.2019; Wiley
• Subjects: electromagnetic performance; finite element analysis; GOES; grain-oriented electrical steel stator laminations; gran-oriented electrical steel; laminations; permanent magnet motors; PM fractional-slot modular machines; stators; The 9th International Conference on Power Electronics, Machines and Drives (PEMD 2018); tooth tips; stators; electromagnetic performance; grain-oriented electrical steel stator laminations; GOES; tooth tips; finite element analysis; permanent magnet motors; laminations; PM fractional-slot modular machines; gran-oriented electrical steel
• ISSN: 2051-3305; 2051-3305
• DOI: 10.1049/joe.2018.8172

The effect of tooth tips on the performance variations due to using grain-oriented electrical steel (GOES) stator laminations in permanent magnet fractional-slot modular machines is studied in this work. It is concluded that the electromagnetic performance is further improved using GOES in machines with tooth tips compared to machines without tooth tips. This is due to a higher increment on the flux density in the airgap. The acoustic behaviour variations due to using GOES are predicted by analysing several mechanical- and acoustic-related parameters. It is predicted that implementing GOES improves the acoustic behaviour in machines without tooth tips. Furthermore, the effects of GOES in machines with tooth tips are slightly improved compared to machines without tooth tips. However, in order to determine the real mechanical and acoustic behaviours, further analysis is needed.