A plant for transmitting electric power
CA 2218940 C · Owner: Asea Brown Boveri Ab · Inventors: Asplund, Gunnar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A plant for transmitting electric power having an alternating voltage network with, at least one phase and at least one VSC converter is provided. The converter has at least, one phase leg with two current valves connected in series. Each phase leg is connected, at a point between the two current valves to a respective phase of the alternating voltage, network. The plant also comprises at least one additional phase leg in the converter more, than the number of phases of the alternating voltage network and a means for disconnecting a phase leg from its respective phase and for connecting the additional phase, leg at a point between its two current valves to the disconnected phase.
Read the whole patent
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 12, 1997 and granted February 6, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 12, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 2019.
- 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
Timeline From CIPO dates
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.