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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
92 Shipboard Electrical Power Systems
Example 4.7
A 100 MVA, 4-pole, 60 Hz synchronous generator that operates at 0.90 power
factor load has a cylindrical rotor 5 m long and 1.5 m in diameter. The aver-
age mass density of the rotor’s copper and magnetic steel combined is 8 g/cm
3
.
Determine the kinetic energy of the generator rotor running at the rated speed.
Assuming that the turbine rotor has inertia 1.5 × generator rotor inertia, determine
the inertia constant H of the turbine-generator system.
SOLUTION
Rated speed of 4-pole, 60 Hz generator = 120 × 60 ÷ 4 = 1800 rpm.
ω
mech
= 2π × 1800 ÷ 60 = 188.5 rad/sec.
Polar moment of inertia ...
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Publisher Resources

ISBN: 9781439828175