Since the end of the 20th century, portable electronic devices (computers, telephones, etc.) have become increasingly present in our daily lives. Although popular, these electronic devices are highly dependent on the short operating time of their power supply (batteries). For the user, the convenience of portable electronics is gradually being compromised by the need to recharge the batteries almost all the time. For devices that cannot be connected to a charger, the problem of battery replacement becomes even more delicate. To provide a solution to this problem, this article proposes a wireless power transfer system using inductive coupling. It uses the resonance phenomenon to optimize the system efficiency and the power transferred to the load. Using Visual Studio Code software, which is a cross-platform code editor developed by Microsoft, based on the Electron framework and primarily written in TypeScript, an enhanced version of JavaScript, five cases have been proposed and simulated according to the characteristics of the passive components of the system, namely inductance, capacitance and resistance. These are the following configurations: 1) non-resonant circuit, 2) circuit with series resonance in the primary, 3) circuit with series resonance in the secondary, 4) circuit with series-series resonance in the primary and secondary, and 5) circuit with parallel resonance in the primary and series resonance in the secondary. This last configuration is a new, improved configuration proposed. The results obtained show that the power transferred to the load (2034 W) by the proposed improved configuration, is 1.04 times higher than that transferred by the circuit with series resonance in the primary and secondary (1940 W), and 3228 times higher than that transferred by the non-resonant circuit (0.63 W). The efficiency of the proposed improved configuration is 70%. It is 3 times higher than that of the non-resonant circuit (22%). These results also show that with a judicious choice of inductance, capacitance values and frequency, it is possible to obtain a theoretical efficiency of 99.981% and a theoretical power transferred to the load of 7027.97 W.
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