| Title |
A Study on the Efficiency of LED Lighting Applied by Direct AC Power Using Magnetic Resonance Wireless Power Transfer System |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2013.27.10.015 |
| Keywords |
Magnetic Resonance ; Wireless Power Transfer ; LED Lighting ; Direct AC Power Drive |
| Abstract |
In this paper, wireless power transfer system using the magnetic resonance was designed and applied to LED lighting for implementation of wireless lighting. This lighting was made by the converted DC driving type and the direct AC driving type. In the former, transferred AC power was rectified into DC and regulated to the specified voltage value, which leads to produce the loss at the rectifying and regulating circuit. In the latter, wireless-transferred AC power was directly applied to LED, which get rid of the loss derived from the additional circuit. For the efficiency-comparison between the former and the latter, the power at each stage was measured when the same optical output radiated from LED lighting part. The result revealed that the direct AC driving type had 18% higher efficiency than the DC driving type and confirmed that LED lighting using magnetic resonance wireless power transfer system can be efficient by direct AC power supply. And the direct AC driving type had the simple circuit structure and the simple LED lighting formation, so this can leads to various application. |