Method and apparatus for pre-charging power converters and diagnosing pre-charge faults
US7929323B2 · kind B2 · utility
17Cited by
5References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 2008 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Jul 15, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Power conversion systems and diagnostic techniques are presented for detecting suspected converter faults when a pre-charge circuit is engaged during system startup, in which known or estimated system characteristics are used to derive expected converter voltage values or rate of change values and the levels are measured during startup to ascertain whether the pre-charge circuit or other converter components are faulted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.