System and method for electrical short detection
US9810730B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2015 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | Dec 4, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and systems detect short circuits in an electrical system, such as a dynamic braking grid of a vehicle. The methods and system measure a characteristic of a current that is conducted through one or more resistive elements of an electrical system. The current is supplied to the electrical system from a power source as an applied voltage. A resistance change signal representative of a change in one or more electrical resistances of the one or more resistive elements is determined The resistance change signal can be based at least in part on a difference between the characteristic of the current that is measured and a low pass filtered value of one or more of the characteristic of the current that is measured or the applied voltage supplied by the power source. A short circuit event is identified based at least in part on the resistance change signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.