Port Configuration Method of Three-Switch Converter for High-Voltage Gain in Hybrid UAVs Applications

Document Type

Article

Date of Original Version

1-1-2024

Abstract

To improve the flight time of an unmanned aerial vehicle (UAV), research on the hybridization of a lithium-ion polymer (Li-Po) battery and a fuel cell (FC) is being conducted. In addition, as the field of use of UAVs expands, the use of high-power converters is required to withstand larger payloads. It means using high-voltage gain converters is essential for efficient motor driving. Therefore, we derive circuit structures that can obtain high-voltage gain from FC through port configuration of a three-switch converter for low-weight and high-power density characteristics. The UAV systems will be designed under 600 and 150 W inputs from hybrid sources and 750 W output conditions, which is calculated to drive the motor of a hexa-copter weighing about 10 kg is calculated. In addition, based on the required power of the three possible circuits, the driving time of UAVs according to the amount of hydrogen energy will be calculated. Finally, this paper presents the guideline for selecting the circuit structure according to the priority between improving the driving time and achieving higher power density.

Publication Title, e.g., Journal

Journal of Electrical Engineering and Technology

Volume

19

Issue

1

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