Load impedance detection for static or dynamic adjustment of passive loads
US9071284B2 · kind B2 · utility
3Cited by
3References
64Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2012 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Jun 1, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This disclosure provides systems, methods and apparatus for detecting an impedance of a wireless power transmitter load. In one aspect, a method of determining a reactive condition of a wireless power transmitter apparatus is provided. The method comprises determining a value correlated to a voltage of a drain of a switching element of a driver circuit of the wireless power transmitter. The method further comprises determining a reactance load change based on the determined voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.