A New Design Of Self Charging Unmanned Aerial Vehicle (UAV) System Using Inductive Approach For Precision Argriculture

Chuan, Justin Chia Yang (2019) A New Design Of Self Charging Unmanned Aerial Vehicle (UAV) System Using Inductive Approach For Precision Argriculture. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

Text (24 Pages) A New Design Of Self Charging Unmanned Aerial Vehicle (UAV) System Using Inductive Approach For Precision Argriculture.pdf - Submitted Version Download (5MB)

Abstract

Wireless Power Transfer (WPT) is a power transfer technology with no physical link in between transmitter and receiver. With the benefit of non-contact concept, WPT has been commonly used in many devices, and UAV is one of them. Generally, there are two classes of WPT which are near-field and far field-wireless power transfer. Among these, Inductive Power Transfer (IPT) from near field WPT has been design in this project to improve the charging system of UAV, because IPT can generate higher efficiency and able to transmit power in rough condition compare to Capacitive Power Transfer (CPT). This technique enables wireless power conveys from a charging tower to UAV. Hence, the UAV able to conserve the time for flying back to the user just for charging issue. To be more details, Class E inverter circuit has been constructed to convert the 12V direct current (DC) to alternating current (AC) with lMHz of operating frequency and 50% of duty cycle. Solar panel has been proposed as the power supply for Class E inverter circuit, because the UA Vis working at the outdoor environment which is under the sun and solar is renewable resources which does not cause pollution to our mother earth. Next, impedance matching circuit has been constructed to maximize the power transfer to the load in order to increase the overall efficiency of the wireless charging system. The prototype of the UAV wireless charging system in precision of agriculture has been successfully developed with a 12 cm x 12cm width per length of transmitting and receiving coil. Analysis between transmitting coil and receiving coil such as distance apart and misalignment distance was carry out during the experimental session. With the features of 3cm apart and perfectly aligned between transmitter coil and receiver, the output power for the prototype is obtained with value 23.32W and the input power is 24.36W. An optimum ZVS waveform has been obtained with the efficiency up to 95.73%

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