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
AC and DC Motors 125
Example 5.9
A 3-phase, 460 V, 60 Hz induction motor with a Δ-connected stator is designed
to have the magnetic flux density in the core at the saturation limit of 1.6 T. If this
machine is connected to 50 Hz lines, determine the voltage for limiting the flux
density to the same 1.6 T saturation limit.
SOLUTION
Each phase of the Δ-connected stator sees the line voltage.
Using Equation (3.2) at 60 Hz, we have V
60Hz
= 460 = 4.444 × 60 × N × ϕ
m
.
At 50 Hz, we have V
50Hz
= 4.444 × 50 × N × ϕ
m
.
Taking the ratio of the two with the same number of turns N and to keep the
same flux ϕ
m
, we have V
50Hz
/460 = 50/60 = 0.8333, or V
50Hz
= 0.8333 ...
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