Voltage and current regulation method for a two-stage DC-DC converter circuit
US8344710B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2010 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Apr 23, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/007
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control methodology for a two-stage PWM DC-DC conversion system, with transformer-isolation, in which the converter circuit input voltage is compared to a set voltage calibrated as a function of the desired output voltage and the maximum voltage conversion ratio provided by the second-stage converter. When the input voltage is above the set voltage, the second-stage converter is controlled to provide both output voltage regulation during normal operation and output current limiting during over-current conditions. However, when the input voltage is below the set voltage, the first-stage converter is controlled to provide output voltage regulation with minor output current limiting, and the second-stage converter is controlled to provide extended output current limiting independent of the input voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.