WIRELESS INDUCTIVE POWER TRANSFER Russian patent published in 2018 - IPC H02J50/60 

FIELD: electrical engineering.

SUBSTANCE: wireless power transfer system includes power transmitter (101) arranged to provide a power transfer to power receiver (105) via a wireless inductive power signal. Parasitic power loss detector (207) is arranged to detect a parasitic power loss for the power transfer, and user indicator (209) is arranged to initialize a user alert in response to the detection of the parasitic power loss. System comprises input (211) for receiving user inputs and controller (213) which is arranged to initiate an adaptation of a parasitic power loss detection operation performed by parasitic power loss detector (207) to detect parasitic power losses if a user input meeting a criterion is not received. Each of the individual features may be implemented in power transmitter (101), power receiver (105), or may, for example, be distributed therebetween. This approach may allow improved foreign object detection in a wireless power transfer system.

EFFECT: technical result is higher operational reliability, especially at high power levels, and a lower risk of heating foreign objects.

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