Soft starter for phase-shifting autotransformer AC-DC power converter
US8576594B2 · kind B2 · utility
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11References
13Claims
0Family size
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Key dates
| Filing date | Apr 4, 2011 |
| Grant date | Nov 5, 2013 |
| Priority date | — |
| Expiry date | May 28, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/217
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An AC-DC power converter has a phase-shifting autotransformer based rectifiers and DC capacitors. Soft start of the AC-DC power converter is achieved by designing the autotransformer to operate at a low peak flux density at a point of AC voltage step application (initial turn on). The addition of a controlled impedance segregates capacitor charging from the initial magnetizing process of the autotransformer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.