Electricity: motive power systems – Limitation of motor load – current – torque or force
Reexamination Certificate
2007-10-30
2007-10-30
Donovan, Lincoln (Department: 2837)
Electricity: motive power systems
Limitation of motor load, current, torque or force
C318S132000, C318S254100, C318S161000, C318S161000
Reexamination Certificate
active
10724148
ABSTRACT:
An apparatus and method for providing improved sensorless control of permanent magnet motors is described. Induced electricity from at least one winding set is used to determine rotor position and provide feedback to a commutation circuit driving at least another winding set isolated from the first.
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MC33035, NCV33035—Brushless DC Motor Controller, May 2002.
Position Sensorless Control of Surface Mount Permanent Magnet AC (PMAC) Motors at Low Speeds.
Position Sensorless Control of Surface Mount Permanent Magnet AC (PMAC) Motors at Low Speeds, 1999, no month.
Donovan Lincoln
Ogilvy Renault LLP
Pratt & Whitney Canada Corp.
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