Control method for direct current transmission by means of several power converters
CA 2623262 C · Owner: Siemens Aktiengesellschaft · Inventors: Karlecik-Maier, Franz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is provided for controlling converters in the field of power distribution and transmission. At least three converters which can be controlled as rectifiers or inverters and are connected to one another via a DC power supply system are controlled without the control method requiring a hierarchical structure or control separation. Each rectifier control system forms a rectifier difference DC voltage and a rectifier difference direct current and controls an associated rectifier such that the sum of the difference DC voltage and the difference direct current is minimized. Each inverter control system forms an inverter difference DC voltage and an inverter difference direct …
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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 September 22, 2005 and granted September 17, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 22, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.