Failure prediction system
US11296594B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 23, 2020 |
| Grant date | Apr 5, 2022 |
| Priority date | — |
| Expiry date | Jul 4, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/5387
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A failure prediction system disclosed herein is configured to predict a failure of a power converter which converts output power of a power source to power for driving a traction motor. The system may include: a sensor provided at the power converter; and a controller configured to predict a failure of the power converter based on a measurement value of the sensor. The controller may be configured to: calculate a difference between previous and present measurement values of the sensor, wherein the controller repeatedly calculates the difference at predetermined time intervals; obtain intermediate data by applying variable conversion to a plurality of the past differences; calculate a damage level of the power converter based on the intermediate data; and output a warning signal in a case where the damage level exceeds a damage threshold, wherein the warning signal indicates that a timing when the failure occurs is approaching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.