Hitachi-Lg Data Storage Korea, Inc.

Hosung Hwang

The present invention relates to a method and an apparatus for wirelessly transmitting power. A method for wirelessly transmitting power according to an embodiment can measure and store signal strength values corresponding to inductive coupling degrees with a secondary coil of a receiving apparatus sequentially with respect to two or more primary coils included in two or more resonance circuits, select a primary coil related to a largest signal strength value among the signal strength values as an operating coil, adjust a reference value of a power loss value which becomes a basis for entering a mode for detecting power loss based on a difference between a signal strength for a primary coil adjacent to the operating coil and a signal strength value for the operating coil, and transmit power to a wireless power receiving apparatus through the operating coil.

Apparatus and method for transmitting power wirelessly

Disclosed are an apparatus and a method for transmitting power wirelessly. The method for transmitting power wirelessly includes: detecting whether a receiving apparatus moves while wirelessly transmitting the power to the receiving apparatus through magnetic inductive coupling; performing the magnetic inductive coupling with the receiving apparatus for each of two or more primary coils when it is detected that the receiving apparatus moves; and determining whether to change the primary coil connected with the receiving apparatus based on a result of the magnetic inductive coupling. A signal strength message received from the receiving apparatus is received and stored every primary coil magnetically inductively coupled with the receiving apparatus, and it is determined that the received apparatus is connected through a primary coil corresponding to a largest value among signal strength values included in the signal strength message.

Method and apparatus for transmitting power wirelessly

Disclosed are a method and an apparatus for transmitting power wirelessly. The apparatus for wirelessly transmitting power includes: a power converter including an inverter for converting DC power into AC power, a resonance circuit, and two sensors for extracting a message transmitted from a receiving apparatus receiving power through magnetic induction of the resonance circuit; and a controller for controlling an operation of the inverter by selectively using messages extracted by the two sensors. When the controller fails in decoding the message extracted by one of the two sensors, the controller decodes the message extracted by the other of the two sensors and controls the operation of the inverter based on the decoded message. One of the two sensors is connected to a front stage of the inverter and the other of the two sensors is connected to a rear stage of the inverter.

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Seoul, South Korea

Hosung Hwang