A magnetic charging connection for a quadcopter drone

Azmi, Ahmad Hariz (2021) A magnetic charging connection for a quadcopter drone. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Drones, or Unmanned Aerial Vehicles (UAV), have become increasingly popular among enthusiasts and businesses alike. They are also utilized for surveillance in law enforcement, agricultural preservation in farming, monitoring of poaching of wild animals, and acquiring special effects in movies and sports videos. Despite its heavy weight and long charge time, the battery is used by many drones. The average life for drone battery is 20 minutes. This project involves designing the product development process and developing a Wireless Power Transfer (WPT) charging system for a quadcopter drone using magnetic resonant coupling. This project proposes a method for designing primary and secondary coils. The principal circuit in the charging station is made up of circular coils to counteract the negative impacts on the coupling factor caused by possible coil misalignment due to a bad landing. There are many benefits of the Wireless Power Transfer (WPT), such as simple design, low cost, and increased product life. A commercial drone, which is an E99 Pro drone, is used to test a WPT system demonstrator prototype. The electrical capabilities of the WPT are computed and measured at the end of the project. A simulation of the circuit has been tested using Simulink (MATLAB) to check component connection. The charging system produced a maximum output power of 4 W with less than 50% efficiency. An 850 mAh LiPo drone battery took about 2-3 hours to fully charge wirelessly. The transmitter and receiver coil wound has a total of 15 turns, and the diameter of the coil is 1mm. A magnetic enameled coil is used in this project. An 6-8 W series resonant wireless power transmission system was constructed in this project. With high efficiency of 65.3%, the WPT can charge the same drone battery in less than 1.5 hours. Finally, an automatic battery charging station is constructed

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