Open AccessUse of fractional‐conductor windings and semi‐magnetic slot wedges in synchronous machines
Author(s) -
DonaghySpargo Christopher,
Spargo Anthony
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8205
Subject(s) - conductor , electromagnetic coil , waveform , synchronous motor , complement (music) , computer science , harmonic , harmonic analysis , electrical engineering , mechanical engineering , acoustics , electronic engineering , engineering , physics , mathematics , voltage , geometry , biochemistry , chemistry , complementation , gene , phenotype
This paper discusses two methods of altering the harmonic content of the spatial air‐gap flux density waveform in synchronous machines (generators and motors). First, fractional‐conductor windings are analysed for adoption as a replacement for a conventional distributed winding arrangement, their advantages and disadvantages briefly discussed and an example design scenario presented. Second, analysis and discussion regarding the use of semi‐magnetic slot wedges as a replacement for glass‐fibre type wedges is presented to complement the choice of winding in synchronous machines. Both methods are shown to benefit machine performance under certain circumstances.