Patent ID: 6291911
Filing Date: 2001-09-18
Classification: H01F,H01H

Abstract:
A closed-loop feedback control system for electrical switchgear comprising:a microprocessor;a current generation means, operatively coupled to said microprocessor, for providing a driving current required to regulate an actuator for moving at least one of two switchgear contacts in the electrical switchgear; anda position feedback means, operatively coupled to the at least one of two contacts, for repeatedly sampling position information of the at least one of two contacts and providing contact position information to the microprocessor,wherein said microprocessor comprises means for controlling said current generation means in real-time, during a switching operation, as a function of an initial contact position and a present contact position, as provided by said position feedback means, such that the at least one contact transitions from the initial contact position to a final contact position in accordance with a pre-defined motion profile so as to provide AC waveform synchronized switching.