WSEAS Transactions on Power Systems
Print ISSN: 1790-5060, E-ISSN: 2224-350X
Volume 8, 2012
Excitation Control of the Synchronous Machines with use an Error Function of the Complex Argument
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Abstract: 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 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 phasor of terminal voltage for the decision of all above-stated problems, that considerably reduces influence of noises and disturbances, simplifies its design and operation.
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Keywords: Hilbert transform, error function of the complex argument (EFCA), Wirtinger calculus, differential of EFCA, small-signal stability, transient stability