TUNABLE WIRELESS POWER ARCHITECTURES
First Claim
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1. A wireless energy transfer system for transferring energy between a power supply and a load, comprising:
- a source resonator coil;
a device resonator coil inductively coupled to the source resonator coil;
a tunable switching amplifier driven by the power supply and driving the source resonator coil through a source impedance matching network, the switching amplifier having electronically controllable switching elements;
a tunable switching rectifier driving the load and receiving energy from the device resonator coil though a device impedance matching network, the switching rectifier having electronically controllable switching elements;
a source amplifier control configured to control a switching characteristic of the switching elements of the amplifier to regulate power extracted from the power supply; and
a rectifier control configured to control a switching characteristic of the switching elements of the rectifier to regulate a characteristic of an output presented to the load, the rectifier control communicatively coupled to the source amplifier control;
wherein the amplifier control provides a substantially fixed switching frequency to the switching elements of the amplifier.
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Abstract
Described herein are improved configurations for a wireless power transfer. The parameters of components of the wireless energy transfer system are adjusted to control the power delivered to the load at the device. The power output of the source amplifier is controlled to maintain a substantially 50% duty cycle at the rectifier of the device.
12 Citations
2 Claims
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1. A wireless energy transfer system for transferring energy between a power supply and a load, comprising:
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a source resonator coil; a device resonator coil inductively coupled to the source resonator coil; a tunable switching amplifier driven by the power supply and driving the source resonator coil through a source impedance matching network, the switching amplifier having electronically controllable switching elements; a tunable switching rectifier driving the load and receiving energy from the device resonator coil though a device impedance matching network, the switching rectifier having electronically controllable switching elements; a source amplifier control configured to control a switching characteristic of the switching elements of the amplifier to regulate power extracted from the power supply; and a rectifier control configured to control a switching characteristic of the switching elements of the rectifier to regulate a characteristic of an output presented to the load, the rectifier control communicatively coupled to the source amplifier control; wherein the amplifier control provides a substantially fixed switching frequency to the switching elements of the amplifier.
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2-24. -24. (canceled)
Specification