Method for reducing dynamic overvoltages in an alternating-currentsystem
CA 1283165 C · Owner: Sadek, Kadry · Inventors: Kuhn, Walter; Sadek, Kadry; Guth, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A method for reducing dynamic overvoltage in an a-c system which is effectively connected to a converter having an intermediate d-c circuit par-, ticularly for the transmission of high voltage direct current. At least one short circuit device can be switched on and off between at least one static converter, operated as a rectifier and at least one static converter operated as an inverter of the converter. The short circuit device is switched off or open in the undisturbed condition of the converter. The firing angle of at least one static converter remaining, in operation, is initially adjusted to approximately 90° in dependence on the case of a disturbance as 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 April 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 16, 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
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.