Shorting period control in inductive power transfer systems
US9998179B2 · kind B2 · utility
2Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2013 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Dec 24, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/24
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention provides a power supply for an inductive power transfer (IPT) system, comprising a current-fed push-pull resonant converter comprising a parallel-tuned resonant tank and a pair of switches enabling selective shorting of the resonant tank; and a controller adapted to control a shorting period of the resonant converter by selectively operating the switches. Methods for controlling an IPT power supply are also disclosed. The power supply may be controlled to regulate the output of an IPT pick-up inductively coupled with the power supply in use, or to operate at a zero voltage switching (ZVS) frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.