Permanent magnet synchronization motor vector control device
CA 2660380 C · Owner: Kitanaka, Hidetoshi · Inventors: Kitanaka, Hidetoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provided is a vector control device for a permanent magnet synchronous motor driven. The device includes: a current command generation unit for generating a d-axis current command and q-axis current command from a given torque command; and a current control unit operating so that the motor current coincides with the current command. The current command generation unit includes: a d-axis basic current command generation unit for generating a first d-axis basic current command idl* by using the torque command; a limiter unit for inputting the current command idl* and outputting a value limited to below zero as a second d-axis basic current command id2*; a d-axis current command …
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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 26, 2006 and granted August 21, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 26, 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.