Adaptive impedance control for wireless charging
US10218210B2 · kind B2 · utility
1Cited by
0References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2016 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Jan 17, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/00712
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus is described. The apparatus includes a transmission coil and a power amplifier. The power amplifier includes a microcontroller and a memory. The memory includes instructions to determine electric current output of the power amplifier, perform a lookup of load reactance range based on target electric current, detect load impedance, calculate reactance based on the load impedance, determine if reactance is within the load reactance range, and adjust reactance shift compensation to bring the reactance within the load reactance range if the reactance is not within the load reactance range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.