Open phase detection
US12066502B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2021 |
| Grant date | Aug 20, 2024 |
| Priority date | — |
| Expiry date | Oct 12, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/045
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An example transformer includes a controller that determines the currents on a power grid side of the transformer, as well as an inverter/load side of the transformer. The transformer may be of a delta-wye configuration. The controller compares the currents on the delta side of the transformer to the currents on the wye side of the transformer to determine whether the currents on either side are imbalanced. If the currents on the delta side are balanced, while the currents on the wye side are imbalanced, then the controller may determine that an open phase condition exists on the wye side of the transformer. Alternatively, if the currents on the delta side are imbalanced or if the currents on the delta side are balanced and the currents on the wye side are also balanced, then the controller determines that no open phase condition exists.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.