Superconductor Science and Technology,
Journal Year:
2024,
Volume and Issue:
37(10), P. 105006 - 105006
Published: Aug. 29, 2024
Abstract
Featured
by
high
power
density
and
efficiency,
temperature
superconducting
(HTS)
electric
machines
provide
a
promising
solution
to
heavy-duty
transport,
e.g.
aircraft.
However,
designing
HTS
machines,
particularly
high-speed
motors,
presents
significant
challenges:
(1)
modelling
is
highly
time-consuming
due
the
non-linear
resistivity
of
superconductors
complex
machine
topology;
(2)
accurately
estimating
AC
loss
windings
remains
an
open
aspiration
complicated
environment.
To
reduce
computational
complexity,
thin
film
approximation
(only
considering
approximated
1-D
film)
for
coated
conductors
(CCs)
has
been
widely
adopted
in
simulations,
such
as
T
-formulation
models;
however,
becomes
inadequate
CCs
under
high-frequency
magnetic
fields,
encountered
motors
aerospace.
efficiently
model
taking
1
MW
synchronous
motor
with
armature
example,
this
paper
time-space
extrusion
(TSE)
method,
which
demonstrates
>25-fold
decrease
time
while
maintaining
comparable
accuracy
two
benchmark
H-A
models.
The
dissipation
both
normal-conducting
layers
studied,
losses
different
turns
winding
have
explored,
slot
leakage
field
harmonics
illustrated.
Results
shown
that
Cu
Ag
operating
at
cryo-temperatures
(e.g.
liquid
hydrogen
temperature)
are
not
neglectable,
especially
residual
resistance
ratio
presence
harmonics.
should
be
positioned
away
from
iron
tooth
opening
minimise
exposure
fields.
TSE
strategy
drawn
conclusions
provided
valuable
insights
efficient
design
machines.
