System for wireless power charging

According to a first aspect of the present disclosed subject matter, a dynamic calibration method in a system comprising a relay, having a coil, adapted to inductively transfer power for charging a device and a transmitter, having a coil and a controller configured to inductively transmit to the relay the power for charging the device, wherein the transmitter and the relay are separated by a medium, the method comprising: determining operating parameters selected from a group consisting of minimal and maximal operating frequency; direction of power increase relative to operating frequency; minimal and maximal duty cycle; minimal and maximal operating amplitude; and any combination thereof; wherein the operating parameters and a ping frequency are determined based on dynamic measurements ofthe transmitter operation and calculations executed by the controller during the calibration. 根据本公开主题的第一方面，一种在系统和发射器中动态校准的方法，所述系统包括具有线圈的继电器，所述继电器适于感应地传输用于对设备充电的电力，所述发射器具有线圈和控制器，所述控制器被配置为向所述继电器感应地传输用于对所述设备充电的电力，其中所述发射器和继电器由介质