A single stage AC/RF converter for wireless power transfer applications
- Resource Type
- Conference
- Authors
- Jiang, Ling; Costinett, Daniel; Fathy, Aly; Yang, Songnan
- Source
- 2017 IEEE Applied Power Electronics Conference and Exposition (APEC) Applied Power Electronics Conference and Exposition (APEC), 2017 IEEE. :1682-1688 Mar, 2017
- Subject
- Power, Energy and Industry Applications
Rectifiers
Power generation
Inverters
Topology
Transmitters
Frequency conversion
Wireless power transfer
WPT
single stage
AC to RF converter
6. 78MHz
- Language
- ISSN
- 2470-6647
A new single-stage AC/RF converter is proposed which directly converts a utility AC input to a regulated, high frequency (6.78MHz) AC output for wireless power transmission. The topology integrates a totem pole rectifier operating in discontinuous conduction mode (DCM) and a phase-shift controlled full bridge inverter. Compared to traditional multi-stage approaches, the single-stage approach improves system power efficiency by reducing the number of cascaded conversion stages. In addition, the reduced power semiconductor component count will be a potential benefit for compact size and lower cost. A 100W laboratory prototype has been built to verify theoretical analysis. Experimental measurements show the capability of the converter to provide power factor correction (PFC) with high conversion efficiency and low total harmonic distortion (THD).