Improved Stability of Superconducting Turbo-Alternators by Pole- Assignment Techniques PDF

Keywords

superconducting generators, electro-hydraulic governors, turbo-alternators

Abstract

One most important aspect of design of superconducting generators concerns their stability following a major system disturbance. As the superconducting field winding of these generators has a relatively very long time constant, only governor control shall be relied upon to improve their stability. This paper presents the details of design of a state feedback controller, based on pole-placement technique, to improve transient performance of superconducting turbo-alternators, fitted with fast acting electro- hydraulic governors. The results, obtained by computer simulation, establish that such a controller, with a time delay to the control signal, enhances the transient stability of the machine, by rapidly damping the post fault rotor oscillation.