Skip to Main Content
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
Common Aspects ofPower Equipment 65
impedances of the generator, transformer, and cable. The load draws current I at
lagging pf cosθ at the load terminal voltage V
Load
, which must be equal to the source
voltage V
source
minus the voltage drop I × Z in the series impedance. Therefore, the
source voltage, which is maintained constant, must be equal to
V
˜
Source
= V
˜
Load
+ I
˜
× (R + j X) (3.13)
The phasor diagram of Equation (3.13) is shown in Figure3.7(b), the trigonometry of
which gives the exact magnitude of the source voltage for any pf = cosθ,
V
S
2
= OA
2
+ AB
2
= (V
L
+ I × R cosθ + I × X sinθ)
2
+ (I × X cosθI × R sinθ)
2
(3.14)
For a typi ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Dielectric Materials for Electrical Engineering

Dielectric Materials for Electrical Engineering

Juan Martinez-Vega

Publisher Resources

ISBN: 9781439828175