Analyses on electromagnetic and temperature fields of superhigh-speed permanent-magnet generator with different sleeve materials

Weili Li, Hongbo Qiu, Xiaochen Zhang, Junci Cao, Ran Yi

Research output: Journal PublicationArticlepeer-review

71 Citations (Scopus)

Abstract

In this paper, a superhigh-speed permanent-magnet generator (SHSPMG) which has an alloy sleeve on the rotor outer surface is investigated. The purpose of the sleeve is to fix the permanent magnets and protect them from being destroyed by the large centrifugal force. However, the sleeve material characteristics have much influence on the superhigh-speed machine, and therewith, most of rotor eddy-current losses are generated in the alloy rotor sleeve, which could increase the device temperature. Taking a 117-kW 60 000-r/min SHSPMG as an example, the influence of the sleeve on the generator output performance is analyzed when the generator sleeve is made of stainless steel, carbon fiber, copper-iron alloy, and copper. In addition, the eddy-current loss distributions could be gotten, and therewith, the variations of the eddy-current losses in different kinds of sleeves are analyzed. Based on the 3-D coupling field between the fluid and temperature, the temperature distributions were obtained when the sleeve adopts different materials. Moreover, the temperature variations of the permanent magnets are further analyzed. The obtained conclusions may provide some references for the design and analyses of the SHSPMG.

Original languageEnglish
Article number6476677
Pages (from-to)3056-3063
Number of pages8
JournalIEEE Transactions on Industrial Electronics
Volume61
Issue number6
DOIs
Publication statusPublished - Jun 2014
Externally publishedYes

Keywords

  • Eddy-current losses
  • electromagnetic field
  • rotor sleeve
  • superhigh-speed permanent-magnet generator (SHSPMG)
  • temperature field

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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