Uninterruptible power supply systems and methods using rectified AC with current control
US6753622B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 2001 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Jun 27, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J9/061
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An uninterruptible power supply (UPS) system includes an AC input port, a DC input port, and an output port configured to be connected to an AC load. A rectifier circuit is coupled to the AC input port, and a power transfer control circuit is coupled to the rectifier circuit output, the DC input port and the output port. The power transfer control circuit produces a DC voltage at the AC load from a rectified voltage produced by the rectifier circuit in a first mode of operation and from a DC voltage at the DC input port in a second mode of operation. A current control circuit, e.g., a boost regulator, may control a current from at least one of the rectifier circuit and the DC input port responsive to a control input. A DC/DC converter circuit may be coupled between the DC input port and the output port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.