Wireless Power Transmitter, Wireless Power Transmission System and Method for Driving a Wireless Power Transmission System

A wireless power transmitter, a wireless power transmitter and a method for driving a wireless power transmission system are disclosed. In an embodiment, a wireless power transmitter includes an inverter, an impedance circuit, an inductance circuit with a first transmission coil and a second transmi...

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Bibliographische Detailangaben
Hauptverfasser:	Hemphill, Hugh, Lohmann, Thomas
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY GENERATION INDUCTANCES MAGNETS SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SYSTEMS FOR STORING ELECTRIC ENERGY TRANSFORMERS TRANSMISSION
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Beschreibung
Zusammenfassung:	A wireless power transmitter, a wireless power transmitter and a method for driving a wireless power transmission system are disclosed. In an embodiment, a wireless power transmitter includes an inverter, an impedance circuit, an inductance circuit with a first transmission coil and a second transmission coil and a switch circuit. The impedance circuit and the inductance circuit establish a resonance circuit. The inverter is configured to provide AC power to the resonance circuit. The switch circuit is configured to couple the first transmission coil directly and/or via the second transmission coil to the impedance circuit to change a resonance frequency of the resonance circuit and to keep a frequency of the AC power within a prescribed range.