Variable Inductor Control Strategy in LCC-S Compensated Wireless Power Transfer Application

Abstract

This paper presents a control strategy for output voltage regulation of the LCC-S compensated Wireless Power Transfer (WPT) system through a variable inductor. Firstly, the architecture of the system is analyzed, and the relation between the output voltage and the variable inductance is derived. Then, the control strategy that allows to regulate the DC current through the variable inductor to maintain the desired output voltage is presented. Both the steady-state and the dynamic performance of the system are evaluated through Simulink simulations.

A Review of Tunable Inductors for Power Electronics: Techniques and Applications

“…Variable inductors have been employed in a variety of power electronic converter applications, mostly based on the previously stated techniques. Lighting drivers [70,[107][108][109][110][111][112][113][114][115][116], resonant converters [79,80,[117][118][119][120][121][122][123][124][125][126][127][128][129], dual-active-bridge converters [72,130,131], wireless power transmission [54,[132][133][134][135][136][137][138], reactive power compensation and voltage control in power systems [139][140][141], and maximum power point tracking (MPPT) [142,143] are all examples of applications that utilize the tuning inductance concept. Emphasizing the advantages and drawbacks of employing variable-inductance inductors in these converters is essential.…”