Contactless power feeding apparatus
US9369181B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2011 |
| Grant date | Jun 14, 2016 |
| Priority date | — |
| Expiry date | Apr 17, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/266
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A contactless power feeding apparatus includes a secondary winding to which power is supplied from a primary winding by an AC power supply. An impedance absolute-value characteristic of Z1 has a frequency of a fundamental wave component to be between a frequency where a local maximum exists and that is nearest to the frequency of the fundamental wave component, and a frequency where a local minimum exists and that is nearest to the frequency of the fundamental wave component. An impedance absolute-value characteristic of Z2 has the frequency of the fundamental wave component to be between a frequency where the local maximum exists and that is nearest to the frequency of the fundamental wave component, and a frequency where the local minimum exists and that is nearest to the frequency of the fundamental wave component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.