Electrical ground isolation and secondary failure reduction detection and isolation
AssigneeGeneral Electric Company
InventorsChristopher Wade McNally, Ajith K. Kumar, Bret Dwayne Worden
Life of this patent
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Abstract
A system for isolating electrical ground faults and secondary failures in an electrical system, the system comprising an AC ground isolation state machine for detecting and isolating an AC ground, a DC ground isolation state machine for detecting and isolating a DC ground, a component failure isolation state machine for detecting and isolating a change in a resistance, and a component failure early detection algorithm for determining a failure before using the state machines.
Claims8
A system for isolating electrical ground faults and secondary failures in an off road vehicle propulsion system, said system comprising:
- an AC ground isolation state machine for isolating a traction motor or alternator when an AC ground is detected;
- a DC ground isolation state machine for isolating a grid box when a DC ground is detected;
- a dynamic braking grid failure isolation state machine for isolating a grid box when a change in resistance is detected;
- a dynamic braking grid failure early detection algorithm for determining a failure before using said state machines;
- and
- a traction motor ground isolation per axle torque limit system connected to said AC ground isolation state machine.
A system for isolating electrical ground faults and secondary failures in an off road vehicle propulsion system, said system comprising:
- an AC ground isolation state machine for isolating a traction motor or alternator when an AC ground is detected;
- a DC ground isolation state machine for isolating a grid box when a DC ground is detected;
- a dynamic braking grid failure isolation state machine for isolating a grid box when a change in resistance is detected;
- a dynamic braking grid failure early detection algorithm for determining a failure before using said state machines;
- and
- a supplemental voltage functions system providing voltage average rates and alternator rectifier bias state information to said state machines and said early detection algorithm.
Dependencies are inferred from the claim text.