A methodology for making a three-coil wireless power transfer system more energy efficient than a two-coil counterpart for extended transfer distance
- Submitting institution
-
Imperial College of Science, Technology and Medicine
- Unit of assessment
- 12 - Engineering
- Output identifier
- 272
- Type
- D - Journal article
- DOI
-
10.1109/TPEL.2014.2312020
- Title of journal
- IEEE Transactions on Power Electronics
- Article number
- -
- First page
- 933
- Volume
- 30
- Issue
- 2
- ISSN
- 0885-8993
- Open access status
- Out of scope for open access requirements
- Month of publication
- March
- Year of publication
- 2014
- URL
-
-
- Supplementary information
-
10.1109/TPEL.2014.2312020
- Request cross-referral to
- -
- Output has been delayed by COVID-19
- No
- COVID-19 affected output statement
- -
- Forensic science
- No
- Criminology
- No
- Interdisciplinary
- No
- Number of additional authors
-
3
- Research group(s)
-
-
- Proposed double-weighted
- No
- Reserve for an output with double weighting
- No
- Additional information
- Conventional wisdom considers two-coil wireless power transfer (WPT) system to be the best because adding a relay coil-resonator would introduce extra conduction loss. This is the world’s first paper (jointly with WPT industry) that dispels this misconception by proving both theoretically and experimentally that a 3-coil WPT system (with a relay coil-resonator between the transmitter and receiver coil) can be more efficient than the 2-coil counterpart under certain conditions, while maintaining high efficiency for extended transfer distance. The Wireless Power Consortium subsequently revised the wireless charging standard “Qi” in 2016 with an extended transmission distance from 5mm to 40mm.
- Author contribution statement
- -
- Non-English
- No
- English abstract
- -
