A Nine-phase Six-Terminal Fractional-Slot-Winding for Interior Permanent-Magnet Machines with Low Space Harmonics

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This paper introduces a nine-phase six-terminal fractional slot concentrated winding layout suitable for Interior Permanent-Magnet (IPM) machine with a number of stator slots equals a multiple of nine. The winding layout when compared with a three-phase machine having the same slot/pole combination can effectively eliminate all air-gap flux sub harmonics. This highly reduces rotor core and magnet losses. Moreover, it offers a torque gain of approximately 2.5% over conventional three-phase winding layout. The proposed layout is investigated based on some well-known slot-pole combinations, namely, 9-slot/8-pole and 9-slot/10-pole, and a comparison is carried out with the conventional three-phase case assuming same stator and rotor dimensions. Being a multiphase winding, the proposed layout also offers a higher reliability-oriented design over the three-phase based systems. During a fault in one of the three-phase converters, the machine can steadily run at approximately half load with the faulty converter disconnected. The proposed winding is also compared with the well-known six-phase 12-slot/10-pole combination in terms of torque production, torque ripple, and induced eddy current losses.

Original languageEnglish
Title of host publicationProceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages499-505
Number of pages7
ISBN (Electronic)9781538624777
DOIs
Publication statusPublished - 24 Oct 2018
Event23rd International Conference on Electrical Machines, ICEM 2018 - Alexandroupoli, Greece
Duration: 3 Sep 20186 Sep 2018

Other

Other23rd International Conference on Electrical Machines, ICEM 2018
CountryGreece
CityAlexandroupoli
Period3/9/186/9/18

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Keywords

  • Eddy current loss
  • Fault-tolerant
  • FSCW
  • Nine-phase
  • Permanent magnet
  • Six-phase

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Mechanical Engineering

Cite this

Abdel-Khalik, A., Gadoue, S., & Ahmed, S. (2018). A Nine-phase Six-Terminal Fractional-Slot-Winding for Interior Permanent-Magnet Machines with Low Space Harmonics. In Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018 (pp. 499-505). [8506749] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICELMACH.2018.8506749