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Title: Overvoltage protection system for wireless power transfer systems

Patent ·
OSTI ID:1354792

A wireless power transfer overvoltage protection system is provided. The system includes a resonant receiving circuit. The resonant receiving circuit includes an inductor, a resonant capacitor and a first switching device. The first switching device is connected the ends of the inductor. The first switching device has a first state in which the ends of the inductor are electrically coupled to each other through the first switching device, and a second state in which the inductor and resonant capacitor are capable of resonating. The system further includes a control module configured to control the first switching device to switching between the first state and the second state when the resonant receiving circuit is charging a load and a preset condition is satisfied and otherwise, the first switching device is maintained in the first state.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
UT-BATTELLE, LLC
Patent Number(s):
9,640,976
Application Number:
14/631,903
OSTI ID:
1354792
Resource Relation:
Patent File Date: 2015 Feb 26
Country of Publication:
United States
Language:
English

References (15)

Semiconductor device and wireless tag using the same patent May 2013
Resonant protection kit for power supply patent-application May 2003
Overvoltage Protection Circuit, Power Transmission Device Including The Same, And Control Method Thereof patent-application September 2012
Apparatus For And Method Of Protecting Wireless-Coupled Power Devices From Overvoltage, Overcurrent, And Overtemperature Using Hysteresis patent-application November 2012
Over-Voltage Protection Device For Resonant Wireless Power Reception Device And Method For Controlling The Over-Voltage Protection Device patent-application July 2013
Wireless Power Overvoltage Protection Circuit With Reduced Power Dissipation patent-application March 2014
Wireless Power Transfer System For Wirelessly Transferring Electric Power In Noncontact Manner By Utilizing Resonant Magnetic Field Coupling patent-application May 2014
Performing Integrity Checks on Climate Control System Components patent-application May 2014
Electronic Component, Power Feeding Device, And Power Feeding System patent-application July 2014
Wireless Power Transmission Apparatus For High Efficiency Energy Charging patent-application December 2014
Double-Sided LCC Compensation Method For Wireless Power Transfer patent-application January 2015
Wireless Power Transfer Apparatus patent-application July 2015
Inductive Power Transfer System and Method for Operating and Inductive Power Transfer System patent-application October 2015
Zero Voltage Switching Half-Bridge Converters patent-application February 2016
Electronic Device, Wireless Power Receiving Apparatus, and Display Apparatus patent-application August 2016