Control apparatus for ac-dc converter
CA 1286359 C · Owner: Kabushiki Kaisha Toshiba · Inventors: Hoshi, Kimihiro; Sakai, Takami; Noro, Yasuhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A control apparatus for an AC-DC converter is coupled to an AC system. The control apparatus is provided with a constant current controller and a constant margin angle controller, and includes a detector for detecting a decrease in a voltage of the AC system below a predetermined value, and generating a detection signal representing this decrease in the voltage; a first compensator for compensating for a current set value by a first value corresponding to the detection signal, wherein the current set value serves as a control target of the constant current controller; a second compensator for compensating for the current set value by a second value corresponding to the detection signal if …
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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 July 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 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.