Introduction

The AVC63-12 and AVC125-10 regulate the level of excitation supplied

to the field of a conventional, brushless, synchronous generator.

Regulation is achieved by sensing the generator output voltage, converting

it to a dc signal, and comparing the signal to a reference voltage.

An error signal is developed and used to control the dc field power in

order to maintain a constant generator output.

Each regulator includes frequency compensation with selectable slope,

inverse-time overexcitation shutdown, buildup circuitry, single-phase or

three-phase voltage sensing, single-phase or three-phase shunt or

permanent magnet generator (PMG) power input, parallel droop

compensation, and an accessory input. The accessory input provides

compatibility with devices such as var/power factor controllers or excitation

limiters.