Investigations and design considerations for high-speed wireless charging module incorporating supercapacitors in the superconducting hyperloop train

Magnetic resonant coupling-based wireless power transfer (MRC-WPT) has gained considerable attention as a viable approach for high-power energy delivery, offering enhanced safety and operational flexibility—particularly within industrial automation and advanced transportation infrastructures. This technology is especially relevant for applications such as autonomous electric vehicles, electric trams, and next-generation high-speed transit systems like hyperloop. Traditional energy transmission techniques, including wired interfaces through pantograph mechanisms, tend to escalate infrastructural expenses—most notably in enclosed environments such as tunnels—and may adversely affect the dynamic performance of systems employing magnetic levitation, including magnetic levitation (MAGLEV) and superconducting propulsion platforms. Despite its advantages, WPT systems designed to supply power to high-temperature superconducting (HTS) levitation modules face fundamental challenges, primarily due to the significant inductive time constants associated with superconducting coils, which hinder efficient energy storage and rapid power transfer. In addition, the deployment of such systems incurs high capital and operational expenditures due to the reliance on complex auxiliary subsystems, including high-frequency power amplifiers and high-current rectification modules. Recently, supercapacitor technologies have emerged as promising candidates for energy buffering applications across various domains—including portable industrial equipment, detachable battery systems, and embedded sensors—owing to their high-power discharge capability and suitability for low-voltage operation. In this context, the present study investigates the potential of a fast-charging wireless power charging system (FC-PCS) that integrates super-capacitive energy storage. The research includes experimental assessments utilizing a 58 F supercapacitor module energized by a 200 W, 370 kHz of the RF power source under variable magnetic loading conditions. Based on the experimental investigations, the current charging durations by the supercapacitor discharging performances are calculated by the LC theoretical equations under different magnetic conditions.