ENHANCED FOREIGN OBJECT DETECTION WITH COIL CURRENT SENSING IN WIRELESS POWER TRANSFER SYSTEMS

ENHANCED FOREIGN OBJECT DETECTION WITH COIL CURRENT SENSING IN WIRELESS POWER TRANSFER SYSTEMS

Embodiments described herein provide foreign object detection based on coil current sensing. The transmitter power loss is computed directly based on the coil current, in conjunction with, or in place of the conventional computation based on transmitter input current. The enhanced precision of the c...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BAVISI, Amit D, MEHAS, Gustavo James, SMITH, Nicholaus Wayne
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
SYSTEMS FOR STORING ELECTRIC ENERGY
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Zusammenfassung:Embodiments described herein provide foreign object detection based on coil current sensing. The transmitter power loss is computed directly based on the coil current, in conjunction with, or in place of the conventional computation based on transmitter input current. The enhanced precision of the computer power loss can be used to more accurately detect a foreign object near the transmitter coil during a wireless power transfer.