Electrical Machine Rotor Shielding for Low Cost Electrical Drive

M. M.J. Al-Ani, G. Vakil, C. Gerada

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

Electrical machine rotor shielding has been proposed for high-speed electrical machines, i.e., ≥50krpm, where a smooth current waveform becomes difficult and costly to generate due to the required high switching frequency. The rotor shielding is used to suppress the unsynchronized low order high amplitude current harmonics and consequently reduces the induced eddy-current losses in rotor. For moderate speed machines, 10-40krpm, generally suited for automotive applications, a smooth current waveform is possible to generate, however, fast switching devices are required that increases the overall drive cost. In the paper, a feasibility study of low cost electrical drive is presented. The electrical drive consists of low cost, low switching frequency modules to generate a pulse width modulation (PWM) current waveform with a few switching pulses, and a rotor with electromagnetic shield to reduce the losses to an acceptable level. The feasibility study includes two permanent magnet machines (PMMs) with different rotors. Multi-physics results are obtained and compared to illustrate the feasibility of the proposed drive.

Original languageEnglish
Title of host publication2018 IEEE Transportation and Electrification Conference and Expo, ITEC 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages315-319
Number of pages5
ISBN (Print)9781538630488
DOIs
Publication statusPublished - 28 Aug 2018
Externally publishedYes
Event2018 IEEE Transportation and Electrification Conference and Expo, ITEC 2018 - Long Beach, United States
Duration: 13 Jun 201815 Jun 2018

Publication series

Name2018 IEEE Transportation and Electrification Conference and Expo, ITEC 2018

Conference

Conference2018 IEEE Transportation and Electrification Conference and Expo, ITEC 2018
Country/TerritoryUnited States
CityLong Beach
Period13/06/1815/06/18

Keywords

  • SPM
  • Shielding
  • harmonics
  • low cost
  • low siwtching frequancy
  • soild rotor
  • surface-mounted permant magnet machine

ASJC Scopus subject areas

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

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