Voltage regulator is used to adjust the voltage on synchronous alternator, the port voltage of generator, can be detected through the adjustment to adjust the main field of exciter current (small power control power), adjust the magnetic field, achieve voltage regulation.
Voltage regulator for automatic voltage regulation (AVR) is the most basic function, the weaver to reactive power distribution, grid can be achieved when the generator regulation of PF/VAR.
The AVR is often an alternating current power supply, frequency self-excitation or separately excited, rate of change is big, the permanent magnet has a frequency of 240 hz, self-excitation is 50 hz.
Now advanced voltage regulator is digital, environment ability is strong, harmonic, reaction at the MS level, and with a lot of excitation and voltage protection.
