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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