High efficiency and lightweight wireless charging system for drone batteries

Campi, Tommaso; Cruciani, Silvano; Feliziani, M.; Maradei, F.

doi:10.23919/aeit.2017.8240539

Cited by 54 publications

(33 citation statements)

References 11 publications

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“…In real applications, the load resistance RL varies according to the status of the battery charge, but this variation is very limited and then a fixed value of RL can be a valid assumption [30]. port 1-1′ of the WPT circuit [28]. The input impedance is calculated as the ration between voltage and the current before the compensation network.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…Once the drone is landed, a procedure starts to detect which coil of the array must be activated. The selection of the primary coil is based on the analysis of the input impedance Z in at the primary port 1-1 of the WPT circuit [28]. The input impedance is calculated as the ration between voltage and the current before the compensation network.…”

Section: Coil Designmentioning

confidence: 99%

“…Energies 2018, 11, x FOR PEER REVIEW 9 of 15 port 1-1′ of the WPT circuit [28]. The input impedance is calculated as the ration between voltage and the current before the compensation network.…”

Section: Coil Designmentioning

confidence: 99%

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Wireless Power Transfer Technology Applied to an Autonomous Electric UAV with a Small Secondary Coil

2018

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This study deals with the design and the optimization of a wireless power transfer (WPT) charging system based on magnetic resonant coupling applied to an electric vertical take-off and landing Unmanned Aerial Vehicle (UAV). In this study, a procedure for primary and secondary coil design is proposed. The primary circuit in the ground station consists of an array of coils in order to mitigate the negative effects on the coupling factor produced by the possible misalignment between the coils due to an imperfect landing. Key aspects for the design of the secondary coil onboard the UAV are the lightness and compactness of the WPT system components. A demonstrative prototype of the WPT system is applied to a commercial drone. The WPT electrical performances are calculated and measured. Finally, an automatic battery recharge station is built where the drone can autonomously land, recharge the battery and take off to continue its flight mission.

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Section: Numerical Resultsmentioning

confidence: 99%

Section: Coil Designmentioning

confidence: 99%

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Wireless Power Transfer Technology Applied to an Autonomous Electric UAV with a Small Secondary Coil

2018

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“…There are two ways to charge UAV: (1) build direct contact between the charging pile and UAV to charge UAV directly. Although the transmission efficiency of this direct contact pile model is high [25], the unpredictable serious environmental factors will destabilize the entire system in the air. (2) Use wireless power transmission (WPT) technology with the coupling resonance between the coils to recharge UAV [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Design of UAV wireless power transmission system based on coupling coil structure optimization

Yan

Shi

Zhang

2020

J Wireless Com Network

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With the development of unmanned aerial vehicle (UAV), it has been used in many fields, such as aerial photography, military, and transportation. However, it is a challenge for charging due to its short battery life. Wireless charging has been considered as a good UAV solution. In this paper, we proposed a wireless power transmission system (WPT) through inductive coupling and analyzed the power efficiency of the inductive coupling. The WPT included a charging station, which can provide energy through an induction coil array, and a portable energy receiving device mounted on the base of the UAV. Moreover, the power efficiency was analyzed though the equivalent circuit of WPT and the mathematical model of the power efficiency was established. The results showed that the WPT can transfer energy to UAV with high power efficiency within a 30 mm lateral displacement range.

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“…These batteries can be recharged using wired power transmission which requires some physical connection or via wireless power transmission which does not require any physical connection. Even though wired power transmission is more efficient than wireless power transmission, the wireless power transmission technique is currently utilized for its lower maintenance and increased safety (due to no physical connection of wires) for the delivery of power [11,12]. In order to charge the battery using wireless power transmission, the quadcopter is equipped with electromagnetic coils.…”

Section: Introductionmentioning

confidence: 99%

Development of Intelligent Drone Battery Charging System Based on Wireless Power Transmission Using Hill Climbing Algorithm

Rohan

Rabah

Talha

et al. 2018

ASI

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In this work, an advanced drone battery charging system is developed. The system is composed of a drone charging station with multiple power transmitters and a receiver to charge the battery of a drone. A resonance inductive coupling-based wireless power transmission technique is used. With limits of wireless power transmission in inductive coupling, it is necessary that the coupling between a transmitter and receiver be strong for efficient power transmission; however, for a drone, it is normally hard to land it properly on a charging station or a charging device to get maximum coupling for efficient wireless power transmission. Normally, some physical sensors such as ultrasonic sensors and infrared sensors are used to align the transmitter and receiver for proper coupling and wireless power transmission; however, in this system, a novel method based on the hill climbing algorithm is proposed to control the coupling between the transmitter and a receiver without using any physical sensor. The feasibility of the proposed algorithm was checked using MATLAB. A practical test bench was developed for the system and several experiments were conducted under different scenarios. The system is fully automatic and gives 98.8% accuracy (achieved under different test scenarios) for mitigating the poor landing effect. Also, the efficiency η of 85% is achieved for wireless power transmission. The test results show that the proposed drone battery charging system is efficient enough to mitigate the coupling effect caused by the poor landing of the drone, with the possibility to land freely on the charging station without the worry of power transmission loss.

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High efficiency and lightweight wireless charging system for drone batteries

Cited by 54 publications

References 11 publications

Wireless Power Transfer Technology Applied to an Autonomous Electric UAV with a Small Secondary Coil

Wireless Power Transfer Technology Applied to an Autonomous Electric UAV with a Small Secondary Coil

Design of UAV wireless power transmission system based on coupling coil structure optimization

Development of Intelligent Drone Battery Charging System Based on Wireless Power Transmission Using Hill Climbing Algorithm

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