AVR/PSS Structure by Terminal Voltage Phasor

In paper the new structure of the automatic voltage regulator (AVR) and the power system stabilizer (PSS) of the synchronous machines is considered. It is known, that the primary goal, that solved AVR are maintenance of a terminal voltage of the synchronous machine according to the reference. For PSS, the goal is mitigation the electromechanical oscillations of the synchronous machine at various disturbances. For these purposes as inputs of the AVR and PSS the set of state variables of the synchronous machine is used: terminal voltage, armature current, frequency, speed, power, etc. The key feature of offered excitation control system is use only the terminal voltage phasor for the decision of all above-stated problems, that considerably reduces influence of noises and disturbances, simplifies its design and operation.