Apparatus for stabilizing turbine-generator shaft torsional oscillations
CA 1285047 C · Owner: Kurita, Atsushi · Inventors: Kurita, Atsushi; Mase, Akira
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for stabilizing turbine generator shaft torsional oscillations including: a current detector for detecting ac current of a turbine generator used in combination with a dc power-transmission system, a filter to which an output of said current detector is delivered, the filter comprising a first bandpass filter for detecting a super synchronous component (fl + fm) and a second bandpass filter for detecting a sub synchronous component (fl - fm) where a fundamental frequency of the generator is represented by fl and a natural frequency of the mechanical shaft system of the generator is represented by fm a, calculation circuit for applying conversion of at least one of d and q axis …
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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 June 18, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 18, 2008.
- 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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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.