Feasible Design and Operating Investigations for Fast Wireless Power Charging Module Using Supercapacitor Unit in the High-Speed Superconducting Levitation Hyperloop Train

The technology of Magnetic Resonant Wireless Power Transfer (MRCWPT) has been regarded as a promising solution for providing high-power sources with enhanced convenience and safety in industrial and transportation applications. This includes self-driving electric vehicles, trams, and high-speed Hyperloop trains. The conventional use of wired power lines, such as pantographs, contributes to increased tunnel construction costs and negatively impacts stability in high-speed transportation systems, including superconducting levitation (MAGLEV) and Hyperloop trains. Generally, the wireless power transfer system used for supplying power to the HTS levitation magnet faces inherent challenges in energy storage accumulation, primarily due to the inductive time constant of the magnet. Additionally, the economic considerations associated with the equipment required for high-power RF generators and high-performance rectifiers with high current density must also be taken into account. In recent years, the use of supercapacitors (super Cs) has been rapidly increasing in energy storage applications, such as handheld industrial equipment, portable devices with removable batteries, and industrial sensors and actuators, due to their ability to deliver higher power densities at lower voltage limits. For these reasons, this paper investigates the feasibility and fundamental performance of fast wireless power charging systems incorporating supercapacitors (FWPCS), using a 58F supercapacitor module under a 200 W, 370 kHz RF generator as the wireless power charging unit for an HTS magnet with high energy density.