Controlled switching devices and method of using the same
US10230234B2 · kind B2 · utility
1Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2015 |
| Grant date | Mar 12, 2019 |
| Priority date | — |
| Expiry date | Feb 10, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention describes a method and an electrical circuit for controlling the closing of a three-phase circuit breaker with simultaneous pole operation to mitigate the inrush current resulting from power transformer energization by taking into account the residual magnetic flux in the transformer's magnetic core. It is disclosed a method to perform controlled switching on transformer and therefore mitigate the inrush current. It is disclosed that this method can be applied to any configuration of transformers which can be, but not limited to, Y-Δ, Y-Y, Δ-Δ and Δ-Y with either floating or grounded neutral.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.