The voltage regulation of an alternator is defined as the change in its terminal voltage or percentage of rising in terminal voltage when the full load is removed.
Percentage of voltage regulation = (E – V) / V * 100 , where
E – voltage per phase no load
V – voltage per phase full load
The terminal voltage always changes inversely with the change in load. Hence when the load is decreased the terminal voltage increases; consider flux and speed remain constant.
% of Voltage regulation is,
( no load voltage (Eph) – full load voltage (Vph)) * 100 / full load voltage (Vph)
The value of voltage regulation depends on the current and power factor of the load. The terminal voltage decreases when the load is increased if the p.f is lagging but in the case of a leading power factor the terminal voltage increases with load.
The voltage regulation of an alternator is defined as the change in its terminal voltage or percentage of rising in terminal voltage when the full load is removed.
Percentage of voltage regulation = (E – V) / V * 100 , where
E – voltage per phase no load
V – voltage per phase full load
The terminal voltage always changes inversely with the change in load. Hence when the load is decreased the terminal voltage increases; consider flux and speed remain constant.
% of Voltage regulation is,
( no load voltage (Eph) – full load voltage (Vph)) * 100 / full load voltage (Vph)
The value of voltage regulation depends on the current and power factor of the load. The terminal voltage decreases when the load is increased if the p.f is lagging but in the case of a leading power factor the terminal voltage increases with load.