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Shipboard Electrical Power Systems
book

Shipboard Electrical Power Systems

by Mukund R. Patel
December 2011
Intermediate to advanced content levelIntermediate to advanced
370 pages
12h 24m
English
CRC Press
Content preview from Shipboard Electrical Power Systems
60 Shipboard Electrical Power Systems
Regarding the magnetic loss, the alternating magnetic ux produces two types
of power loss in the ferromagnetic iron core: (1) hysteresis loss P
hyst
= K
h
f B
m
n
due
to hysteresis (magnetic friction), and (2) eddy current loss P
eddy
= K
e
f
2
B
m
2
t
2
due to
internally circulating (eddy) currents in the core body. Here, K
e
and K
h
= propor-
tionality constants, f = frequency, B
m
= maximum (peak) ux density, t = thickness
of the core laminations perpendicular to the ux ow, and n = Steinmetz constant
(typically 1.6 to 1.8 for magnetic steel used in electrical machines).
Since P
eddy
depends on the core laminat
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Publisher Resources

ISBN: 9781439828175