Calibration and use of mechanical relay at zero cross
US10535482B2 · kind B2 · utility
2Cited by
9References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2017 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | Mar 28, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2047/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This disclosure describes systems, methods, and apparatus for determining a relay delay for a relay of a relay device used to switch AC power to and from a load. The relay delay can be pre-determined as a model or polynomial including variables for temperature and age, such that the switching instructions can be sent to the rely a relay delay before a zero crossing of the AC signal that the relay is switching, and where the relay delay accounts for temperature and age of the relay in real time or near real time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.