Control apparatus for ac rotary machine and control method for ac rotary machine
CA 2643433 C · Owner: Kakizaki, Tsuneyasu · Inventors: Kayano, Hiroyuki; Kono, Masaki; Kakizaki, Tsuneyasu
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 rotary machine comprising a VVVF inverter exchanging electric power between it and the machine, a voltage detector detecting voltage information, current detectors an , inverter--electric-power command unit determining an inverter-electric-power command value in accordance with the detected voltage information, an actual-inverter--electric-power calculation unit calculating an actual inverter-electric-power value on the basis of the detected current information items, a secondary-magnetic--flux command calculation unit calculating a secondary--magnetic-flux command value for the AC rotary machine on , the basis of a difference between the …
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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 May 25, 2006 and granted August 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 25, 2026.
- 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.