Power converters with AC and DC operating modes and methods of operation thereof
US6483730B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 10, 2001 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Dec 10, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/538
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power converter suitable for use in an uninterruptible power supply (UPS) includes first and second voltage busses, an input port having a first terminal coupled to one of the first and second voltage busses, a neutral bus and an output terminal. A first switching circuit selectively couples a second terminal of the input port to the first and second voltage busses. A second switching circuit selectively couples the first and second voltage busses to the output terminal. A third switching circuit selectively couples the first and second voltage busses to the neutral bus. Preferably, the first, second and third switching circuits are operative to produce an AC output voltage at the output terminal from a DC input voltage at the input port such that alternating ones of the first and second terminals of the first input port are referenced to the neutral bus for successive first and second half cycles of the AC output voltage. According to other embodiments, a DC voltage generating circuit is operative to produce respective first and second DC voltages on first and second voltage busses. A first switching circuit is operative to selectively couple the first and second voltage busses …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.