Phase-selective interruption for three-phase AC circuits with Thomson coil actuated switches and breakers
US11817695B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Mar 2, 2022 |
| Grant date | Nov 14, 2023 |
| Priority date | — |
| Expiry date | Jun 9, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/175
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system and method for interrupting power in a three-phase power system interrupts power in the faulted phase and the next sequential phase at high speeds, while interrupting power in the remaining phase at a normal operation speed. Limiting high-speed interruption to only two phases requires significantly less energy storage than implementing high-speed interruption in all three phases. When hybrid circuit interrupters are used, the need to wait for a zero-crossing in the current signal in order to initiate interruption operations is eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.