Yura Hashimoto
Engineering (mechanical engineering systems)
Hometown: Ota City, Tokyo, Japan
Graduation date: Fall 2027
Additional details: First-generation college student
FURI | Fall 2025
USB-powered Wireless Power Transfer for Low-power LED Lighting
Common 5V USB sources can power low-power LEDs if a short-range wireless link is designed to minimize reactive and conduction losses. We present a USB-powered resonant-inductive WPT architecture that co-optimizes coil geometry, compensation topology, and control under strict 5V/USB current limits. Using a coupled-mode/AC small-signal model calibrated to LTSPICE, we derive closed-form design rules for Q-factor, coupling, and impedance matching and implement a frequency-tracked transmitter with current limiting to ensure USB compliance. A benchtop prototype validates stable LED drive across lateral misalignment and separation, with measured efficiency and regulation trends aligning with theory. The result is a practical recipe, schematics, coil patterns, and control logic. For cable-free LED fixtures and sensors powered by ubiquitous USB, reducing wiring, enabling sealed luminaires, and informing low-power WPT standards.
Mentor: Ayan Mallik
It’s hip to be square.
Students presenting projects at the Fulton Forge Student Research Expo are encouraged to download this personal QR code and include it within your poster. This allows expo attendees to explore more about your project and about you in the future.
Right click the image to save it to your computer.