Device for regulating electrical voltage
US7656138B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 22, 2005 |
| Grant date | Feb 2, 2010 |
| Priority date | — |
| Expiry date | Jun 28, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/20
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An apparatus for regulating electrical voltage in multiphase power mains has a control transformer having for each phase of the power mains a primary winding and a control winding having three taps. The second tap is connected centrally between the first and third taps and to one of the ends of the primary winding. This control winding has winding lengths between the first and second taps and second and third taps equal to a whole-number multiple of a winding length of the primary winding. Three circuit elements have inputs connected to the taps. A reactor winding has ends connected to outputs of the first and second circuit elements, while the output of the third circuit element electrically connected to the output of the first circuit element. A further circuit element is connected across the reactor winding, and an output is connected to a center of the reactor winding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.