Helical winding model
built at Leeds University
Evolution
of
a helical
winding
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Helical Stator Winding
Studies which demonstrated feasibility of
helical stator
windings for superconducting a.c. generators and helped
establish a theoretical basis for understanding its
electromagnetic
performance (1970-1974)
References
-
Ross J.S.H, Anderson A.F., MacNab,
R. B. UK Patent 1 395
152 Alternating Current Dynamo-Electric Machine Windings
Published
21 May 1975
-
Anderson, A.F,. Bumby, J.R.,
Hassall, B.I. : Analysis
of helical armature windings with particular reference to
superconducting
a.c. generators. Proc. IEE, Vol 127, Pt. C, No 3 MAY 1980 pages 129
- 144 Download pdf file
Abstract: An unusual form of polyphase
armature winding
is described in which conductors lie on a helix of constant radius as
they
pass from one end of the machine to the other. There are no end
windings.
An analysis of the winding is peformed which allows analytic
expressions
for the flux densities and machine reactances to be found. Measured and
calculated values of synchronous reactance agree to within 2%. Some of
the more unusual properties of helical windings are discussed. Further
notes on helical windings
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