Synchronous Generator Ratings


by sandy.bridge
Tags: generator, ratings, synchronous
sandy.bridge
sandy.bridge is offline
#1
Dec1-13, 07:02 PM
P: 767
Hey all,

If we are given a synchronous generator with the following nameplate values 10MVA, 13.8kV, 2 pole, 60 Hz

why is it not sufficient to go
[tex]S_{RATED}=I_{RATED}V_{RATED}[/tex]

as we did for transformers?

My reason for asking is because I am trying to determine the voltage regulation of a particular generator. However, if I determine the full load current using the above formula, I get an absurd result.
Phys.Org News Partner Engineering news on Phys.org
A smart prosthetic knee with in-vivo diagnoses
Old tires become material for new and improved roads
Students take clot-buster for a spin
dlgoff
dlgoff is offline
#2
Dec1-13, 08:56 PM
Sci Advisor
PF Gold
dlgoff's Avatar
P: 2,633
Is the generator a 3 phase machine? If so, the apparent power = √3 Voltageline ⋅ Currentline.
13.8kv is a line voltage.
sandy.bridge
sandy.bridge is offline
#3
Dec1-13, 09:09 PM
P: 767
How silly of me. Honestly, this entire time my issue was that I did not divide S by three. Thanks!


Register to reply

Related Discussions
Synchronous Generator ( again ) Electrical Engineering 14
Synchronous Generator in Isolated Mode Electrical Engineering 21
connecting a synchronous generator to the grid Engineering, Comp Sci, & Technology Homework 4
Synchronous generator Electrical Engineering 18
Synchronous Generator Power factor Electrical Engineering 3