Next Approach Of Hems Wpt

The wireless power transmission is widely studied for many kinds of application. Basically, the magnetic resonance coupled theory is applicable for the gradually near field sheen. We have studied HEMS (Home Energy Management System). In that study, we select the wireless power transmission as the most useful energy source for sensor network node. Sensor network nodes need more than 100 mu W average power on working. Our scope of transmitting distance from power supplier to receiver is more than 1 m. In our previous study we have shown the experimental result of more than 0.55m transmitting distance with one turn small loop coil and shown the possibility of further transmission by using other kinds of coil shape under the magnetic coupled method. In the latest paper we have shown the results of using silver nano-particle paste as the flux concentrator. In this study we have tried the next approach of introducing many relay coils between transmitting coil and receiving coil. As the results we can get the further transmission results on HEMS by introducing some relay coils.