Integrated Process Control‐Power Management System Design and Flight Performance Tests for Fuel Cell Powered Mini‐Unmanned Aerial Vehicle

Abstract

Unmanned aerial vehicles (UAVs) powered by electric motors are in an advantageous position because of their properties, such as low noise and thermal footprint, high efficiency, and zero emissions. Lithium‐based batteries have restrictive factors for flight duration due to its low energy density, difficult, and expensive charging methods. It is aimed to extend flight duration of a battery powered mini‐type UAV with a combined system, which includes a 200 W polymer electrolyte membrane (PEM) fuel cell, a hydrogen generation system based on in situ hydrolysis of sodium borohydride, a hybrid power management system consisting of fuel cell and battery, and an embedded control system. It is observed that a fuel cell‐based energy system is able to extend endurance by twofolds compared with an only battery powered system. This is the first study in the literature that investigates the flight duration of UAVs in battery versus fuel cell according to actual flight data.

Real-time tunable hydrogen generation from hydrolysis of borohydrides using 3D magnetic catalysts

“…, to meet unmanned aircraft take-off criteria). 57 Thus, extensive works have been carried out to optimize the BOPs and their integration to develop a lightweight, commercially viable, high-density hydrogen generator. 58 Achieving dynamic tunability of the hydrogen generation rate of the reaction may offer a simple solution for on-demand hydrogen supply.…”

“…[51][52][53][54][55][56] However, integrated systems for portable applications require high specific energy, which leads to their high sensitivity to weight and size (e.g., to meet unmanned aircraft take-off criteria). 57 Thus, extensive works have been carried out to optimize the BOPs and their integration to develop a lightweight, commercially viable, highdensity hydrogen generator. 58 Achieving dynamic tunability of the hydrogen generation rate of the reaction may offer a simple solution for on-demand hydrogen supply.…”