I have a project where I have to build an electrical model of a generator with constant torque at 1500 RPM and simulate it in LabView.
I have a manual that describes some measurements that were made on the generator while operating at certain values, and something that is very odd to me is the fact that when the Exciter's voltage is increasing, the output voltage is decreasing.
Here I'll attach a table that shows some sample values.
Blue: Output Voltage Green: Output Current Red: Input Exciter's Voltage
I can see that the voltage-current relationship maintains a semi-constant power of 420kW Approximately, but when modelling this generator I don't know how to obtain a similar behavior like this one.
Also, Calculating the output impedance (with Z = V/I ) would help me when creating my model?. I considered that but I'm not sure where should I place it.