WIRELESS POWER TRANSFER CONTROL METHOD AND WIRELESS POWER TRANSFER SYSTEM
First Claim
1. A wireless power transfer control method for a system including a plurality of power source coils and a plurality of power receivers and simultaneously, wirelessly transfers power from the plurality of power source coils to at least two of the power receivers using one of magnetic field resonance and electric field resonance, wherein the wireless power transfer control method comprises:
- obtaining a single-body power transfer efficiency of the plurality of power source coils to each of the power receivers, and a single-body power requirement required by each of the power receivers;
dividing the single-body power requirement by the single-body power transfer efficiency to calculate a single-body transferred power of each of the power receivers;
selecting a first power receiver having a maximum single-body transferred power at which the single-body transferred power is maximum; and
controlling the plurality of power source coils to maximize a power transfer efficiency to the first power receiver.
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Accused Products
Abstract
A wireless power transfer control method for a system including a plurality of power source coils and a plurality of power receivers and simultaneously, wirelessly transfers power from the plurality of power source coils to at least two of the power receivers using one of magnetic field resonance and electric field resonance, wherein the method includes obtaining a single-body power transfer efficiency of the plurality of power source coils to each of the power receivers, and a single-body power requirement required by each of the power receivers; dividing the single-body power requirement by the single-body power transfer efficiency to calculate a single-body transferred power of each of the power receivers; selecting a first power receiver having a maximum single-body transferred power at which the single-body transferred power is maximum; and controlling the plurality of power source coils to maximize a power transfer efficiency to the first power receiver.
19 Citations
16 Claims
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1. A wireless power transfer control method for a system including a plurality of power source coils and a plurality of power receivers and simultaneously, wirelessly transfers power from the plurality of power source coils to at least two of the power receivers using one of magnetic field resonance and electric field resonance, wherein the wireless power transfer control method comprises:
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obtaining a single-body power transfer efficiency of the plurality of power source coils to each of the power receivers, and a single-body power requirement required by each of the power receivers; dividing the single-body power requirement by the single-body power transfer efficiency to calculate a single-body transferred power of each of the power receivers; selecting a first power receiver having a maximum single-body transferred power at which the single-body transferred power is maximum; and controlling the plurality of power source coils to maximize a power transfer efficiency to the first power receiver.
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2. A wireless power transfer control method for a system including a plurality of power source coils and a plurality of power receivers and wirelessly transfers power from the plurality of power source coils to each of the power receivers using one of magnetic field resonance and electric field resonance, wherein the wireless power transfer control method comprises:
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first power transfer for transferring power to only a specific power receiver on the basis of a power transfer efficiency of each of the power receivers; second power transfer for controlling the plurality of power source coils to change a direction of one of a magnetic field and an electric field, and transferring power to the power receivers; third power transfer for, in at least two of the power receivers which receive power, reducing a power received by at least one power receiver while maintaining an overall power transfer efficiency, and transferring power to the at least two of the power receivers; and fourth power transfer for, in the plurality of power receivers, transferring power on the basis of a first power receiver having a maximum single-body transferred power at which a single-body transferred power of each of the power receivers is maximum, wherein the first power transfer, the second power transfer, the third power transfer, and the fourth power transfer are controlled to transfer power to the plurality of power receivers. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A wireless power transfer system including a plurality of power source coils and a plurality of power receivers and wirelessly transfers power from the power source coils to each of the power receivers using one of magnetic field resonance and electric field resonance, wherein the wireless power transfer system comprises:
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first power transfer for transferring power to only a specific power receiver on the basis of a power transfer efficiency of each of the power receivers; second power transfer for controlling the plurality of power source coils to change a direction of one of a magnetic field and an electric field, and transferring power to the power receivers; third power transfer for, in at least two of the power receivers which receive power, reducing a power received by at least one power receiver while maintaining an overall power transfer efficiency, and transferring power to the at least two of the power receivers; and fourth power transfer for, in the plurality of power receivers, transferring power on the basis of a first power receiver having a maximum single-body transferred power at which a single-body transferred power of each of the power receivers is maximum, wherein the first power transfer, the second power transfer, the third power transfer, and the fourth power transfer are controlled to transfer power to the plurality of power receivers. - View Dependent Claims (14, 15)
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16. A computer readable non-transitory tangible medium for storing a program for controlling a wireless power transfer system including a plurality of power source coils, a plurality of power receivers, and a controller which performs control to wirelessly transfer power from the power source coils to each of the power receivers using one of magnetic field resonance and electric field resonance, wherein
the program causing the controller to execute: -
obtaining a single-body power transfer efficiency of the plurality of power source coils to each of the power receivers, and a single-body power requirement required by each of the power receivers; dividing the single-body power requirement by the single-body power transfer efficiency to calculate a single-body transferred power of each of the power receivers; specifying a first power receiver having a maximum single-body transferred power at which the single-body transferred power is maximum; and controlling the plurality of power source coils to maximize a power transfer efficiency to the first power receiver.
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Specification