Figure 3-15.--An ac generator: A. Brush type. B. Brushless type.
this ac generator were to supply a 100-kVA load at 20%
The specified power factor is usually 80 percent
power factor, the required increase in dc field current
lagging. For example, a single-phase ac generator
needed to maintain the desired terminal voltage would
designed to deliver 100 A at 1,000 V is rated at 100 kVA.
cause excessive heating in the field.
his machine will supply a 100-kW load at unity power
factor or an 80-kW load at 80 percent power factor. If