voltage droop calculations

[gaux]

how could i calculate the voltage droop? maybe i use Xd in example 10,9 ohms, and i multiply by current?

 

[waross]

Droop is another name for proportional band in analogue control circuits. Droop may be electrical, mechanical, (RPM, position), pneumatic, or possibly some other variable.
If you want voltage drop, use Z (impedance) times I (current).

Bill
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"Why not the best?"
Jimmy Carter

 

[ScottyUK]

gaux,

Most generators have an automatic voltage regulator which modulates the field current of the machine to maintain a setpoint by using a feedback from VTs connected to the main terminals, or maybe connected to the load busbar or after a step-up transformer. It is the AVR which determines the droop characteristic: the AVR setpoint can be a constant value regardless of the load applied, or it can be made load-dependant by providing the AVR with an input from a CT on the main terminals of the machine. This latter mode is a voltage droop characteristic.


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