Editing Electric generator (section)

==Equivalent circuit==
[[File:Generator-model.svg|thumb|right|Equivalent circuit of generator and load. {{ubl
 | G, generator
 | V<sub>G</sub>, generator open-circuit voltage
 | R<sub>G</sub>, generator internal resistance
 | V<sub>L</sub>, generator on-load voltage
 | R<sub>L</sub>, load resistance
}}]]

An [[equivalent circuit]] of a generator and load is shown in the adjacent diagram. The generator is represented by an [[generator (circuit theory)|abstract generator]] consisting of an ideal [[voltage source]] and an internal impedance. The generator's <math>V_\text{G}</math> and <math>R_\text{G}</math> parameters can be determined by measuring the winding resistance (corrected to [[operating temperature]]), and measuring the open-circuit and loaded voltage for a defined current load.

This is the simplest model of a generator, further elements may need to be added for an accurate representation. In particular, inductance can be added to allow for the machine's windings and magnetic leakage flux,<ref>Geoff Klempner, Isidor Kerszenbaum, "1.7.4 Equivalent circuit", ''Handbook of Large Turbo-Generator Operation and Maintenance'', John Wiley & Sons, 2011 (Kindle edition) {{ISBN|1118210409}}.</ref> but a full representation can become much more complex than this.<ref>Yoshihide Hase, "10: Theory of generators", ''Handbook of Power System Engineering'', John Wiley & Sons, 2007 {{ISBN|0470033665}}.</ref>