Nested redundant uninterruptible power supply apparatus and methods
US7638899B2 · kind B2 · utility
56Cited by
9References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2006 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Jan 29, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J3/38
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An uninterruptible power supply (UPS) system includes at least three UPSs configured to be connected in parallel to a common load. The system further includes control circuitry configured to support at least two redundant groups among the UPSs and to support at least two redundant subgroups among at least one of the redundant groups of UPSs. In this manner, a nested redundancy may be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.