Switching systems and methods for use in uninterruptible power supplies
US9030045B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2012 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | Aug 23, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S20/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention may be embodied as an uninterruptible power supply comprising an input section, an output section, an inverter section, and a transformer. The transformer is operatively connected to the input section, the output section, and the inverter section. The uninterruptible power supply operates in a line mode and in a standby mode. In the standby mode, the output section generates an output power signal from a standby signal generated by the inverter section based on the alternative power source and at least one inverter control signal. When the uninterruptible power supply operates in the standby mode, the at least one inverter control signal is pulse-width modulated during at least a first portion of a cycle of the output power signal and not pulse-width modulated during at least a second portion of the cycle of the output power signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.