Statistical Simulation of Conductor Lay and AC Losses in Multi-Strand Stator Windings

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

4 Citations (Scopus)
2 Downloads (Pure)

Abstract

The multi-strand winding configurations adopted in high-speed electrical machines are susceptible to increased AC losses as a result of proximity effects. Due to the characteristics of the insert winding process, variability can arise in the conductor lay and consequently, the AC losses of as-manufactured windings. Current finite element analysis practices cannot account for this variability resulting in under- or over-conservative AC loss estimates. This paper presents the development of a statistical simulation methodology that can represent the variability in conductor lay and AC losses of a distributed winding. Initial calibration of the methodology is achieved following statistical characterization of experimental AC loss measurements from a batch of industrial machines. The initial calibration of the methodology highlighted that only a limited amount of inter-bundle strand mixing is to be expected in as-manufactured windings, resulting in reduced variability in the expected AC losses compared to other statistical estimation approaches.
Original languageEnglish
Title of host publication2021 IEEE International Electric Machines and Drives Conference, IEMDC 2021
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISBN (Electronic)978-1-6654-0510-2
ISBN (Print)978-1-6654-4628-0
DOIs
Publication statusPublished - 15 Jun 2021
Event2021 IEEE International Electric Machines & Drives Conference (IEMDC) - Virtual
Duration: 17 May 202120 May 2021

Publication series

Name2021 IEEE International Electric Machines and Drives Conference, IEMDC 2021

Conference

Conference2021 IEEE International Electric Machines & Drives Conference (IEMDC)
Period17/05/2120/05/21

Bibliographical note

Funding Information:
This work has been funded by InnovateUK Grant Number 113187 and has been performed in collaboration with hofer powertrain UK Limited.

Publisher Copyright:
© 2021 IEEE.

Keywords

  • AC Loss
  • Conductor Lay
  • Insert Winding
  • Variability
  • Probabilistic Methodology

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