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Electric Motors and Drives
book

Electric Motors and Drives

by Austin Hughes
October 2013
Beginner to intermediate content levelBeginner to intermediate
316 pages
13h 14m
English
Newnes
Content preview from Electric Motors and Drives
162 Electric Motors
and
Drives
Since
all the
rotor bars
are
short-circuited
by the end-
rings,
the
induced voltages will drive currents along
the
rotor bars,
the
currents forming closed paths through
the
end-rings,
as
shown
in the
developed diagram (Figure 5.13).
End-ring
Rotor
Bar
Currents
Figure
5.13
Instantaneous sinusoidal pattern of rotor currents
in
rotor bars
and end-rings. Only
one
pole-pitch
is
shown,
but the
pattern
is
repeated
The axial currents
in the
rotor bars will interact with
the
radial flux wave
to
produce
the
driving torque
of
the motor,
which will
act in the
same direction
as the
rotating field,
the
rotor being dragged alon ...
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Publisher Resources

ISBN: 9781483105277