The principle of AVR is control the thyristor conduction angle to change the shunt current of shunt resistor R , in order to control the excitation current.

1FC6/1FJ6 serial generator is constant voltage generator by adjusting the AVR , its high voltage accuracy , from no load to rated load , the steady state voltage regulation rate is ±0.5% , when the generator is running in parallel, by adjusting potentiometer S the steady state voltage regulation rate reached ±0.5% to ±2.5%

1FC6/1FJ6 generator has two kinds of AVR , AVR below 180KW generator without power module, the other one is with the power module. The difference of these two kinds of AVR is with the power increased, shunt current also increased , the rig123.net' target='_blank'>SCR in AVR can not meet the primary requirement, so need amplified circuit shunt of rig123.net' target='_blank'>SCR to meet requirements of the generator .