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

Ayman S. Abdel-khalik, Shady Gadoue, Shehab Ahmed

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

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 publication 2018 XIII International Conference on Electrical Machines (ICEM)
PublisherIEEE
Pages499-505
ISBN (Electronic)978-1-5386-2477-7
ISBN (Print)978-1-5386-2478-4
DOIs
Publication statusPublished - 25 Oct 2018
Event2018 XIII International Conference on Electrical Machines (ICEM) - Alexandroupoli, Greece
Duration: 3 Sep 20186 Sep 2018

Publication series

Name2018 XIII International Conference on Electrical Machines (ICEM)
PublisherIEEE
ISSN (Print)2381-4802

Conference

Conference2018 XIII International Conference on Electrical Machines (ICEM)
Period3/09/186/09/18

Fingerprint Dive into the research topics of 'A Nine-phase Six-Terminal Fractional-Slot-Winding for Interior Permanent-Magnet Machines with Low Space Harmonics'. Together they form a unique fingerprint.

  • Cite this

    Abdel-khalik, A. S., Gadoue, S., & Ahmed, S. (2018). A Nine-phase Six-Terminal Fractional-Slot-Winding for Interior Permanent-Magnet Machines with Low Space Harmonics. In 2018 XIII International Conference on Electrical Machines (ICEM) (pp. 499-505). (2018 XIII International Conference on Electrical Machines (ICEM)). IEEE. https://doi.org/10.1109/ICELMACH.2018.8506749