Three-phase auto transformer with two tap changers for ratio and phase-angle control
US6011381A · kind A · utility
7Cited by
17References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 2, 1998 |
| Grant date | Jan 4, 2000 |
| Priority date | — |
| Expiry date | Nov 2, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/14
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Autotransformer design which is capable of modifying the active power flow in autotransformers connecting two different voltage systems in an electrical substation. The bus-tie autotransformers presented change the active power flow by modifying the phase-angle between the primary and secondary voltages of the autotransformer. In accordance with the two tap changers are employed allowing for independent changes in both the voltage ratio and the phase-angle values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.