Methods of enhancing capacity of transformer equipment and of power flow control using phase-shifting transformers and series impedances in parallel arrangements
CA 2199298 C · Owner: Beauregard, Francois · Inventors: Morin, Gaston; Brochu, Jacques; Beauregard, Francois
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To enhance the capacity of a transformer apparatus for a polyphase AC network a constant current transformer branch (6) is connected in parallel with one or several conventional transformer branches (4) already in place in the transformer apparatus or added to form the transformer apparatus. The constant current transformer branch (6) includes a phase-shifting transformer (10) in series with reactive elements (12). For power flow control between two synchronous polyphase AC network busses (72 74), two parallel branches (76, 84) are used one including a phase-shifting transformer (78) the other , including a reactive element (88). An additional phase-shifting transformer (86) is added …
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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
- Filed November 14, 1995 and granted October 5, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 14, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 2017.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.