VEHICLE WITH FAULT ISOLATION AND RESPONSE CONTROL
First Claim
1. A vehicle comprises:
- a direct current power distribution system having a ground reference in the vehicle;
a ground fault detector for generating indication of a ground fault;
a plurality of loads connected to the direct current power distribution system;
data storage providing expected power consumption values for each of the plurality of loads; and
a data processing system including controllers relating to the loads for providing measured power consumption values for each of the plurality of loads and connected to receive indication of a ground fault and to compare measured power consumption values with expected power consumption values for developing an indication of a source of the ground fault.
3 Assignments
0 Petitions
Accused Products
Abstract
In a vehicle data network with power storage and distribution systems, a ground fault detector or ground insulation monitoring device provides detection of power leakages. Integrity of the power system is reported to a body computer connected to the data network. Responsive to detection of leakage, controllers for high voltage sub-systems report out of norm power usage compared to expected power demand. The system can take corrective actions including: indicating to the operator occurrence of a ground fault; indicating the likely to the source of the fault; reconfiguring operation of the sub-system which is the likely source of the fault, including turning the sub-system off but not otherwise restricting vehicle operation; turning the sub-system off or limiting its operation after a limited time allowing the operator to configure the vehicle for restricted operation; or, placing the vehicle in a restrictive mode of operation.
-
Citations
10 Claims
-
1. A vehicle comprises:
-
a direct current power distribution system having a ground reference in the vehicle; a ground fault detector for generating indication of a ground fault; a plurality of loads connected to the direct current power distribution system; data storage providing expected power consumption values for each of the plurality of loads; and a data processing system including controllers relating to the loads for providing measured power consumption values for each of the plurality of loads and connected to receive indication of a ground fault and to compare measured power consumption values with expected power consumption values for developing an indication of a source of the ground fault. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A vehicle comprising:
-
a dual mode three phase electrical machine having a generation mode and a traction mode; a direct current power distribution and storage system; an inverter/converter connecting the dual mode three phase electrical machine to the direct current power distribution and storage system; a plurality of direct current loads connected to the direct current power distribution and storage system; a plurality of controllers for the direct current loads; a body computer; a controller area network linking the plurality of controllers and the body computer for data communication; sources of data relating to vehicle operating variables; a ground fault detector; means for generating estimates of direct current loads power consumption for, responsive to the data relating to vehicle operating variables, values for expected direct current loads power consumption; and means responsive to indication of a ground fault and excessive direct current load power consumption for identifying a direct current load as a location of a ground fault. - View Dependent Claims (9, 10)
-
Specification