AUTOMATICALLY-ALIGNING MAGNETIC FIELD SYSTEM

A wireless power transfer device includes a first transmitting coil oriented along a first axis; a second transmitting coil on the first transmitting coil and oriented along a second axis perpendicular to the first axis; a nonmagnetic material magnetically decoupling the first transmitting coil from...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Guillory, Kenneth Shane, Dearden, Brian R, Farkas, Leslie
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY ELECTROTHERAPY GENERATION HUMAN NECESSITIES HYGIENE INDUCTANCES MAGNETOTHERAPY MAGNETS MEDICAL OR VETERINARY SCIENCE RADIATION THERAPY SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SYSTEMS FOR STORING ELECTRIC ENERGY TRANSFORMERS ULTRASOUND THERAPY
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Beschreibung
Zusammenfassung:	A wireless power transfer device includes a first transmitting coil oriented along a first axis; a second transmitting coil on the first transmitting coil and oriented along a second axis perpendicular to the first axis; a nonmagnetic material magnetically decoupling the first transmitting coil from the second transmitting coil in an area of overlap between the first and second transmitting coils; and a driver configured to provide first and second equal currents to the first and second transmitting coils, respectively, to generate a rotating magnetic field, the driver being configured to provide the first and second currents to have equal frequencies, substantially equal amplitudes, and a phase difference of substantially 90 degrees.