Control of an inductive power transfer system using a double coil structureProsen, Nataša (Avtor) Truntič, Mitja (Avtor) Domajnko, Jure (Avtor) wireless power transferdouble DD coil structurevoltage controlIPT with multiple coilsThis paper presents the design of the control of the system using a double DD coil structure. The double DD coil is a layered coil structure that consists of two single DD coils, rotated to each other by 90◦. A large-signal and small-signal model of the proposed IPT system are designed for control synthesis. The small-signal model is derived from the large-signal using harmonic approximation and the extended describing functions (EDF). For the small-signal model, voltage and current control schemes were proposed for the purpose of wireless battery charging. The robustness of the control is tested on a small-scale IPT system using double DD coils and resistive load. The results are evaluated at different reference voltages, currents, loads and coupling coefficients.MDPI AG20222025-03-28 08:45:20Članek v reviji92307UDK: 621.314.572COBISS_ID: 118034435DOI: 10.3390/electronics11142148ISSN pri članku: 2079-9292sl© 2022 by the authors