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Title: Permanent magnet machine with windings having strand transposition

This document discusses, among other things, a stator with transposition between the windings or coils. The coils are free from transposition to increase the fill factor of the stator slots. The transposition at the end connections between an inner coil and an outer coil provide transposition to reduce circulating current loss. The increased fill factor reduces further current losses. Such a stator is used in a dual rotor, permanent magnet machine, for example, in a compressor pump, wind turbine gearbox, wind turbine rotor.
Authors:
 [1] ;  [2]
  1. (Clifton Park, NY)
  2. (Scotia, NY)
Publication Date:
OSTI Identifier:
986560
Report Number(s):
7,521,835
US patent application 11/426,756; TRN: US201017%%405
DOE Contract Number:
AC36-99GO10337
Resource Type:
Patent
Research Org:
GFO (Golden Field Office, Golden, CO (United States))
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY; COMPRESSORS; FILL FACTORS; PERMANENT MAGNETS; STATORS; WIND TURBINES