Patent ID: 7525292

Claim:
Compensator device (PSS), particularly for the stabilisation of electromechanical oscillations, intended to provide a reference signal (OUT_PSS) to a voltage regulator device (AVR) of a synchronous alternator (G) for the delivery of electrical power to a distribution network (NET), said device including: first processing means ( 3 , 4 ; 4 ′) for receiving electrical measurement signals representing operative parameters characteristics of said synchronous alternator and/or of said network and for generating an electrical signal to be controlled (ξ(t); ω; P E ) and a first electrical signal (σ(ξ,t)) corresponding to a sliding surface of the “sliding modes” type, second processing means ( 19 , 20 ) of the first signal (σ(ξ,t)) for generating the reference signal (OUT_PSS) so that it has a first order “sliding modes” profile and it renders substantially constant the amplitude of the signal to be controlled (ξ(t); ω; P E ), and bringing said first signal (σ(ξ,t)) substantially to converge to zero.