Device for protecting inverter using a buffer operating according to a state of a safety relay
US10742138B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 2019 |
| Grant date | Aug 11, 2020 |
| Priority date | — |
| Expiry date | Mar 12, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for protecting an inverter include a first power switch configured to be turned on when a first voltage signal from a first switch of a safety relay is applied thereto; a second power switch connected in series with the first power switch, wherein the second power switch is configured to be turned on when a second voltage signal from a second switch of a safety relay is applied thereto; and a power line for connecting the first power switch and the second power switch to each other in series and for connecting the series of the first power switch and the second power switch to a buffer of the inverter, wherein a third voltage signal is applied via the power line to the buffer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.