Analysis of impedance matching network on LED novel driving system based on the wireless power transfer

In this paper, we investigated the impact of impedance matching network on transmission efficiency in LED novel driving system based on wireless power transfer (WPT) technology, which has the capability of transfer electrical power from a power source to an electrical load without any interconnecting wires. In order to improve the power transfer ability of the WPT system, the impedance matching technology was introduced in this work, and a magnetic coupling resonance system was applied to the wireless driving LED lighting system. Due to the flexibility of matching network, the π-type L-type matching networks were chosen for source and load side, respectively. With the help of Smith Software the value of the matching network can be calculated directly. To confirm the effect of the impedance matching circuit on the LED novel driving system, an actual circuit was verified. The experiment results show that the efficiency of WPT technology drive LED lighting system can be improved from 40% to 85%. We believe that the WPT technology drive LED lighting system will make these LED lighting products more available, portable. This new technology will also gain more and more attention in the global LED lighting market.