Switching arrangement for increasing stability in a polyphase e.g. 3-phase power system fed by a generator
CA 1232012 A · Owner: Bbc Brown, Boveri & Company Limited · Inventors: Dobsa, Josip; Hammad, Adel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A POLYPHASE E.G. 3-PHASE POWER SYSTEM FED BY A GENERATOR, ABSTRACT OF THE DISCLOSURE Subsynchronous oscillations in a polyphase power network can be effectively damped with a switching arrangement having a thyristor-switched regulation and a phase shifting polyphase power system. The arrangement is controllable and is periodic in nature being responsive, to a measurement signal representing a physical parameter of the subsynchronous oscillations. This signal preferably represents the difference between the instantaneous rotational frequency of the generator and a set-point value for that frequency. Control windings are connected in series with the power-network-side polyphase windings of a …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 26, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 26, 2005.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.