- #1
Brianrofl
- 21
- 0
Homework Statement
The Attempt at a Solution
First up, part a.
The first one is really simple. The generator is working at its rated voltage of 13.8kV, right? So, would the required field current not be just 225 Amps?
Next, part b.
To sort of explain what's going on, I first found the saturated reactance of the generator by using the data from the table (for 175 field amps). Then, I draw out a per-phase circuit using 13.8kV for the voltage source, the reactance Xs, and the load in Y-connection. I used 13.8kV because the instructions say the generator operates at rated voltage, correct? [Divide by sqrt 3 to convert to line-to-neutral voltage].
Using that, the current is found easily.
Which then translates into finding the input torque rather easily.
I'd appreciate any input. I think I know how to solve this problem but it seemed too easy, and there are just so many things you can make mistakes on doing 3 phase systems that I just want to make sure.
Thanks.