Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Jason Michael Sachs0
John B. Morrell0
John David Heinzmann0
Date of Patent
August 15, 2006
0Patent Application Number
106250170
Date Filed
July 23, 2003
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A method for detecting an open winding in a motor. The method employs passive monitoring of the voltage, current and speed of the motor. A residue voltage is calculated that equals the difference between an idealized set of voltage drops across the motor load elements and the actual voltage drops. When the magnitude of the residue voltage equals or exceeds a threshold, an open winding condition may be declared and appropriate action may be taken.
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