Investigation of the inductive link parameter variations on the wireless power transfer system efficiency

In our days, all portable electronic devices require energy to operate properly. Batteries' short lifetimes that supply these devices are a major disadvantage for their good use. The problem becomes even more delicate when it comes to medical implants, for surgical operations necessity to replace the battery after each life cycle. Therefore, Wireless Power Transfer (WPT) has been emerged as a promising solution to overcome any health problem or any dangerous side effect caused by surgery. In this work, we have designed and implemented two WPT systems using the Resonant Inductive Coupling (RIC) technique to ensure WPT. Each system contains a transmitter and a receiver circuit. The difference is that we propose to vary several inductive link parameters from one system to another like the supply voltage, the coils design and the transfer distance between coils. The objective behind these experiences is to investigate the influence of the inductive link parameter variations on the power transfer efficiency. Experimental results have highlighted that inductive link parameter variations largely influence the power transfer efficiency between the transmitter and the receiver coil.