Power transmitter
AssigneeIHI Corporation
InventorsTakayoshi Bando, Jun Araki
Life of this patent
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Abstract
According to the present disclosure, a power transmitter includes a first coil configured to wirelessly transmit power to a second coil of a power receiver, a direct current (DC)/alternating current (AC) converter configured to convert DC power into AC power and supply the AC power to the first coil, and a controller configured to perform frequency control for selecting a frequency of the AC power. The controller at least selects the frequency so that the DC power is less than or equal to withstand power of the DC/AC converter regardless of an amount of misalignment of the second coil with respect to the first coil.
Claims9
A power transmitter for supplying a power receiver with power, the power transmitter comprising:
- a first coil configured to wirelessly transmit power to a second coil of the power receiver;
- a direct current (DC)/alternating current (AC) converter configured to convert DC power into AC power and supply the AC power to the first coil;
- a controller configured to perform frequency control for selecting a frequency of the AC power,
- wherein the controller at least selects the frequency so that the DC power is less than or equal to withstand power of the DC/AC converter regardless of an amount of misalignment of the second coil with respect to the first coil;
- a smoothing capacitor provided at an input of the DC/AC converter;
- and,
- wherein the controller performs the frequency control before the smoothing capacitor is fully charged.
Dependencies are inferred from the claim text.