Modular uninterruptable power supply
US6400043B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1999 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Nov 30, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J9/067
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An uninterruptable power supply includes a rechargeable battery, having a positive terminal and a negative terminal, and a transformer. The transformer includes a battery side transformer winding having a first terminal, a second terminal and a third terminal; a load side transformer winding inductively coupled to the battery side transformer winding via a core; and a power supply side transformer winding that is inductively coupled to the battery side transformer winding via the core. An inverter bridge circuit couples the positive terminal of the battery to the first terminal of the battery side transformer winding and couples the negative terminal of the battery to the second terminal and the third terminal of the battery side transformer winding. The inverter bridge circuit includes a switching circuit that forms a bridge circuit that allows current from the battery side transformer winding to flow in only one direction into the battery when the switching circuit is in a first switching state so that current from the power supply slide transformer winding induces an alternating current in the battery side transformer winding that passes through the bridge circuit to generate a …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.