Fast rotor loss calculations in fractional-slot permanent magnet machines

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

40 Downloads (Pure)

Abstract

Permanent magnet machines with fractional slot windings are popular because of their shorter end windings, low cost and ease of manufacturing. On the other hand, fractional slot machines have higher eddy current losses in the rotor magnets and sleeve. An accurate calculation of these losses usually involves a time-stepped finite-element analysis with moving rotor, which is time consuming. This paper compares different methods of evaluating these losses using finite element analysis based on their time-cost. The models are mainly divided into two types: time-domain and frequency-domain models. The paper proposes an equivalent frequency-domain analysis in the stator frame for rotor loss calculations, using the Lorentz force term. This method yields similar results to the time-stepped finite element model with a significant time saving. The time saving can be significant in a machine optimization study.
Original languageEnglish
Title of host publicationProceedings 2018 XIII International Conference on Electrical Machines (ICEM)
Place of PublicationPiscataway, NJ, USA
PublisherIEEE
Pages1201-1206
ISBN (Electronic)978-1-5386-2477-7
ISBN (Print)978-1-5386-2478-4
DOIs
Publication statusPublished - 2018
EventICEM 2018: 13th International Conference on Electrical Machines - Alexandroupoli, Greece
Duration: 3 Sep 20186 Sep 2018

Conference

ConferenceICEM 2018: 13th International Conference on Electrical Machines
Abbreviated titleICEM
CountryGreece
CityAlexandroupoli
Period3/09/186/09/18

Keywords

  • eddy current losses
  • Finite Element Analysis
  • Frequency-domain analysis
  • Lorentz force
  • permanent magnet machine
  • Time-domain analysis

Fingerprint Dive into the research topics of 'Fast rotor loss calculations in fractional-slot permanent magnet machines'. Together they form a unique fingerprint.

Cite this