Owner Rockwell Automation Technologies, Inc.

Inventors Li, Yunwei; Pande, Manish

Agent Pizzeys

Pub. Number AU-B-2008227057

Priority 11/863,514 28.09.07 US

Filing date 25 September 2008

Wipo publication date 23 April 2009

Acceptance publication date 22 December 2011

H02P 27/05 (2006.01) Arrangements or methods for the control of ac-motors characterised by the kind of supply voltage

G05B 11/42 (2006.01) Automatic controllers - for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.

G05F 1/70 (2006.01) Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems - Regulating power factor

H02P 21/14 (2006.01) Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation - Estimation or adaptation of machine parameters, e.g. rotor time constant, flux, speed, current or voltage