Waveform detection of states and faults in plasma inverters
US12432842B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 24, 2024 |
| Grant date | Sep 30, 2025 |
| Priority date | — |
| Expiry date | Apr 24, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H2240/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system for determining an operational state of an atmospheric pressure plasma. The system has a transformer for coupling power into the atmospheric pressure plasma, a current sampling circuit configured to sample at least one current pulse flowing through a primary winding of the transformer, and a programmed microprocessor configured to determine, from a waveform of the current pulse, the operational state of the atmospheric pressure plasma. The operational state is one of: a no plasma state, a plasma origination state indicative of an ignited arc expanding into a plasma by gas flow thereinto, and a plasma maintenance state indicative of the plasma being expanded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.