System and method for automatic current limit control

Details System and method for automatic current limit control System and method for automatic current limit control

2002-09-23

2008-08-19

Fletcher, Marlon T (Department: 2837)

Electricity: motive power systems

Constant motor current, load and/or torque control

C318S433000, C318S434000, C318S783000

Reexamination Certificate

active

07414377

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 sensor senses AC line voltage. A control circuit controls operation of the solid state switches. The control circuit ramps switch current during a start mode and selectively holds switch current during the start mode if sensed voltage drops below a threshold amount.

REFERENCES:
patent: 3819996 (1974-06-01), Habisohn
patent: 4902954 (1990-02-01), Oshima et al.
patent: 5276392 (1994-01-01), Beckerman
patent: 5325034 (1994-06-01), Reynolds et al.
patent: 5604672 (1997-02-01), Yoshida et al.
patent: 5703456 (1997-12-01), Cox
patent: 5889392 (1999-03-01), Moore et al.
patent: 6160372 (2000-12-01), Cusack
patent: 6201369 (2001-03-01), Johnson
patent: 6479958 (2002-11-01), Thompson et al.
patent: 6586905 (2003-07-01), Johnson
patent: 6605918 (2003-08-01), Mayhew et al.
patent: 6894452 (2005-05-01), Mayhew et al.
patent: 2002/0079859 (2002-06-01), Lumsden
patent: 2003/0042865 (2003-03-01), Mayhew et al.
patent: 2004/0051494 (2004-03-01), Messersmith
patent: 2004/0056611 (2004-03-01), Mayhew et al.
patent: 2004/0056615 (2004-03-01), Jonsson et al.
patent: 2004/0056619 (2004-03-01), Jonsson et al.
patent: 2004/0056631 (2004-03-01), Derksen
patent: 2004/0155622 (2004-08-01), Mayhew et al.
patent: 2004/0207344 (2004-10-01), Derksen
patent: 2168829 (1986-06-01), None

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