WO2009126963A3 - Power control duty cycle throttling scheme for planar wireless power transmission system - Google Patents

Power control duty cycle throttling scheme for planar wireless power transmission system Download PDF

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Publication number
WO2009126963A3
WO2009126963A3 PCT/US2009/040385 US2009040385W WO2009126963A3 WO 2009126963 A3 WO2009126963 A3 WO 2009126963A3 US 2009040385 W US2009040385 W US 2009040385W WO 2009126963 A3 WO2009126963 A3 WO 2009126963A3
Authority
WO
WIPO (PCT)
Prior art keywords
power
duty cycle
transmitter
transmission system
power control
Prior art date
Application number
PCT/US2009/040385
Other languages
French (fr)
Other versions
WO2009126963A2 (en
Inventor
Zhen Ning Low
Jenshan Lin
Original Assignee
University Of Florida Research Foundation, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US4432708P priority Critical
Priority to US61/044,327 priority
Application filed by University Of Florida Research Foundation, Inc. filed Critical University Of Florida Research Foundation, Inc.
Publication of WO2009126963A2 publication Critical patent/WO2009126963A2/en
Publication of WO2009126963A3 publication Critical patent/WO2009126963A3/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B5/00Near-field transmission systems, e.g. inductive loop type
    • H04B5/02Near-field transmission systems, e.g. inductive loop type using transceiver
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/40Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/022Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters characterised by the type of converter
    • H02J7/025Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters characterised by the type of converter using non-contact coupling, e.g. inductive, capacitive
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B5/00Near-field transmission systems, e.g. inductive loop type
    • H04B5/0025Near field system adaptations
    • H04B5/0037Near field system adaptations for power transfer
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B5/00Near-field transmission systems, e.g. inductive loop type
    • H04B5/0075Near-field transmission systems, e.g. inductive loop type using inductive coupling

Abstract

Embodiments of a power transmission system and power control scheme are provided. The power control scheme utilizes the power requirements for each receiver of a device on a charging pad for highly efficient charging of multiple devices. According to an embodiment, each receiver transmits its power requirement to the transmitter, and based on this power requirement, the most power hungry device is used to set the duty cycle of the transmitter. Each individual receiver can continue to monitor its power requirement and make necessary adjustments to ensure efficient power transfer. Once all the devices are fully charged, the transmitter can be powered off or have its duty cycle reduced to performance trickle charging. The transmitter can continue to access the load conditions while in standby to detect any new device being placed on the charging pad.
PCT/US2009/040385 2008-04-11 2009-04-13 Power control duty cycle throttling scheme for planar wireless power transmission system WO2009126963A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US4432708P true 2008-04-11 2008-04-11
US61/044,327 2008-04-11

Publications (2)

Publication Number Publication Date
WO2009126963A2 WO2009126963A2 (en) 2009-10-15
WO2009126963A3 true WO2009126963A3 (en) 2010-01-21

Family

ID=41162682

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/040385 WO2009126963A2 (en) 2008-04-11 2009-04-13 Power control duty cycle throttling scheme for planar wireless power transmission system

Country Status (1)

Country Link
WO (1) WO2009126963A2 (en)

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US8598743B2 (en) 2008-09-27 2013-12-03 Witricity Corporation Resonator arrays for wireless energy transfer
US8933594B2 (en) 2008-09-27 2015-01-13 Witricity Corporation Wireless energy transfer for vehicles
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US9601270B2 (en) 2008-09-27 2017-03-21 Witricity Corporation Low AC resistance conductor designs
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US9065423B2 (en) 2008-09-27 2015-06-23 Witricity Corporation Wireless energy distribution system
US8692412B2 (en) 2008-09-27 2014-04-08 Witricity Corporation Temperature compensation in a wireless transfer system
US8466583B2 (en) 2008-09-27 2013-06-18 Witricity Corporation Tunable wireless energy transfer for outdoor lighting applications
US8629578B2 (en) 2008-09-27 2014-01-14 Witricity Corporation Wireless energy transfer systems
US8907531B2 (en) 2008-09-27 2014-12-09 Witricity Corporation Wireless energy transfer with variable size resonators for medical applications
US8901778B2 (en) 2008-09-27 2014-12-02 Witricity Corporation Wireless energy transfer with variable size resonators for implanted medical devices
US8957549B2 (en) 2008-09-27 2015-02-17 Witricity Corporation Tunable wireless energy transfer for in-vehicle applications
US9246336B2 (en) 2008-09-27 2016-01-26 Witricity Corporation Resonator optimizations for wireless energy transfer
US8937408B2 (en) 2008-09-27 2015-01-20 Witricity Corporation Wireless energy transfer for medical applications
US8441154B2 (en) 2008-09-27 2013-05-14 Witricity Corporation Multi-resonator wireless energy transfer for exterior lighting
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US8362651B2 (en) 2008-10-01 2013-01-29 Massachusetts Institute Of Technology Efficient near-field wireless energy transfer using adiabatic system variations
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US9018898B2 (en) * 2012-02-10 2015-04-28 Sandisk Technologies Inc. Regulation of wirelessly charging multiple devices from the same source
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US20150249359A1 (en) * 2014-02-28 2015-09-03 L'oreal Charge current monitoring or control in a resonance-tuned inductive charger
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Publication number Priority date Publication date Assignee Title
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