Electricity: motive power systems – Limitation of motor load – current – torque or force
Patent
1997-04-21
1999-04-06
Ip, Paul
Electricity: motive power systems
Limitation of motor load, current, torque or force
318254, 318439, 318139, 361 21, H02H 706, H02P 900
Patent
active
058923420
ABSTRACT:
A self-test system for a shorted diode protection circuit in an electric vehicle propulsion system includes a series of relays for selectively coupling a battery in circuit with a field winding of a generator, the shorted diode protection circuit being coupled in voltage sensing arrangement with the field winding. The relays are operated to induce current in forward and reverse directions through the winding in separate test stages. At each stage the winding is disconnected from the battery so that inductive reactance creates a voltage on the winding to actuate the protection circuit. A system controller records whether the protection circuit is responsive and therefore operable and alerts a vehicle operator.
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GE docket No. 20-TR-1844, AK Kumar, filed concurrently herewith and claiming benefit of 60,016,629, filed May, 1, 1996.
Cooper Charles Earl
Friedlander Ariel
Smith Myron Lee
Worden Bret Dwayne
Breedlove Jill M.
General Electric Company
Ip Paul
Stoner Douglas E.
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