METHOD AND DEVICE FOR REGULATING SYNCHRONOUS GENERATOR EXCITATION Russian patent published in 2004 - IPC

FIELD: electrical engineering; automatic field regulators for synchronous generators.

SUBSTANCE: proposed method includes regulation of generator field by measured current values of active and reactive current components, generator voltage, field current, and generator voltage frequency deviation from desired value; evaluation of angle between rotor transverse axis and voltage vector across generator buses; calculation of deviation of U_s variables from desired motion path of system given by equations S₁= 0, S₂= 0; calculation of S_a response of functional to changes in field voltage U_f; calculation of voltage applied to field winding from formula U_f = E_{f ref} + U_as, where E_{f ref} is voltage across generator field winding corresponding to rated field current; U_as = f(Sa) is output voltage of fuzzy controller. Newly introduced in device implementing this method are coordinate conversion unit, generator internal angle evaluation unit, generator internal voltage evaluation unit, generator internal angle derivative calculation unit, two shaping units, and exciter control signal calculation unit.

EFFECT: enhanced reliability of power supply and generator field regulation in probable variation range of generator load current.

2 cl, 15 dwg