Title:
IDENTIFYING AN INDUCTIVE POWER TRANSFER RECEIVER
Document Type and Number:
WIPO Patent Application WO/2013/165261
Kind Code:
A3
Abstract:
A method for detecting the presence of a receiver in an inductively coupled power transfer system having a transmitter and receiver. The method includes switching on a transmitter converter at a first frequency, measuring the inrush current and determining whether there is a receiver present. In another method, the inrush current is measured for a range of transmitter frequencies, and the variation in current is used to determine where there is a receiver present. In another method, the inrush current is measured when there is a change in voltage in the transmitter, and the variation in current is used to determine where there is a receiver present. In another method, the current supplied to the transmitter converter is measured over two transmitter frequencies, and the variation in current is used to determine where there is a receiver present.
Inventors:
ROBERTSON DANIEL (NZ)
Application Number:
PCT/NZ2013/000068
Publication Date:
March 26, 2015
Filing Date:
April 15, 2013
Export Citation:
Assignee:
POWERBYPROXI LTD (NZ)
International Classes:
H02J17/00; H01F38/14
Foreign References:
| US20110062793A1 | 2011-03-17 | |||
| US20030169013A1 | 2003-09-11 |
Other References:
WU, H. ET AL.: "'A Series-Tuned Inductive-Power-Transfer Pickup With a Controllable AC-Voltage Output'.", IEEE TRANSACTIONS ON POWER ELECTRONICS, vol. 26, no. 1, January 2011 (2011-01-01), XP011382798, Retrieved from the Internet [retrieved on 20141017]
THRIMAWITHANA, D. ET AL.: "'Analysis of Split-Capacitor Push-Pull Parallel-Resonant Converter in Boost Mode'.", IEEE TRANSACTIONS ON POWER ELECTRONICS, vol. 23, no. 1, January 2008 (2008-01-01), pages 359 - 368, XP011198889
ZOU, L. ET AL.: "'A New Rectifier with Combined Power Flow Control Capability for A Series-Tuned Inductive- Power -Transfer Receiver'.", 2012 IEEE INTERNATIONAL CONFERENCE ON POWER SYSTEM TECHNOLOGY (POWERCON), 12 October 2012 (2012-10-12), XP032368837, Retrieved from the Internet [retrieved on 20141017]
THRIMAWITHANA, D. ET AL.: "'Analysis of Split-Capacitor Push-Pull Parallel-Resonant Converter in Boost Mode'.", IEEE TRANSACTIONS ON POWER ELECTRONICS, vol. 23, no. 1, January 2008 (2008-01-01), pages 359 - 368, XP011198889
ZOU, L. ET AL.: "'A New Rectifier with Combined Power Flow Control Capability for A Series-Tuned Inductive- Power -Transfer Receiver'.", 2012 IEEE INTERNATIONAL CONFERENCE ON POWER SYSTEM TECHNOLOGY (POWERCON), 12 October 2012 (2012-10-12), XP032368837, Retrieved from the Internet
Attorney, Agent or Firm:
ELLIS | TERRY et al. (The Terrac, Wellington 6143, NZ)
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