System and method for monitoring current and providing motor...

Details System and method for monitoring current and providing motor... System and method for monitoring current and providing motor...

2005-08-02

2005-08-02

Duda, Rina (Department: 2837)

Electricity: motive power systems

Constant motor current, load and/or torque control

C318S433000, C318S434000, C318S783000, C361S093100, C361S023000, C361S025000, C361S030000

Reexamination Certificate

active

06924613

ABSTRACT:
A motor controller system comprises solid state switches for connection between an AC line and motor terminals for controlling application of AC power to the motor. A user input elements selects a current imbalance parameter. Current sensors sense current in each winding of the motor. A control circuit controls operation of the solid state switches. The control circuit compares the sensed currents with the selected imbalance parameter to determine if a fault condition exists.

REFERENCES:
patent: 5034874 (1991-07-01), Araki
patent: 5309075 (1994-05-01), Yokoe et al.
patent: 5546262 (1996-08-01), Baurand et al.
patent: 5592355 (1997-01-01), Ikkai et al.
patent: 6204751 (2001-03-01), Bolda et al.
patent: 6583975 (2003-06-01), Bax

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