Impedance adjustment in wireless power transmission systems and methods
US11112814B2 · kind B2 · utility
1Cited by
225References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2017 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | Apr 15, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The disclosure features wireless power transfer systems that include a power transmitting apparatus configured to wirelessly transmit power, a power receiving apparatus connected to an electrical load and configured to receive power from the power transmitting apparatus, and a controller connected to the power transmitting apparatus and configured to receive information about a phase difference between output voltage and current waveforms in a power source of the power transmitting apparatus, and to adjust a frequency of the transmitted power based on the measured phase difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.