Single-Tube and Multi-Turn Coil Near-Field Wireless Power Transfer for Low-Power Home Appliances

Jawad, Aqeel Mahmood; Nordin, Rosdiadee; Gharghan, Sadik Kamel; Jawad, Haider Mahmood; Ismail, Mahamod; Abu-AlShaeer, Mahmood Jawad

doi:10.3390/en11081969

Cited by 18 publications

(19 citation statements)

References 47 publications

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“…(i) This work is an extension to the previous study in [27]. The previous work was limited to lowpower-consumption home devices such as shavers, smartphones, and toothbrushes.…”

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confidence: 99%

“…(ii) We improved the power transfer and efficiency by solving the misalignment condition between the transmitter and receiver coil. The previous work in [27] did not address the misalignment problem. The improvement came from a novel design and hardware development of the FSC in the transmitter circuit and the MTC in a receiver circuit that is located at the drone charging station.…”

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Wireless Power Transfer With Magnetic Resonator Coupling and Sleep/Active Strategy for a Drone Charging Station in Smart Agriculture

et al. 2019

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Drones can be used in agriculture applications to monitor crop yield and climate conditions and to extend the communication range of wireless sensor networks in monitoring areas. However, monitoring the climate conditions in agriculture applications faces challenges and limitations, such as drone flight time, power consumption, and communication distance, which are addressed in this study. Wireless power transfer (WPT) can be used to charge drone batteries. WPT using a magnetic resonant coupling (MRC) technique was considered in this study because it allows high transfer power and efficiency with tens of centimeters, power transfers can be achieved in misalignment situations, charging several devices simultaneously, and unaffected by weather conditions. WPT was practically implemented based on a solar cell using a proposed flat spiral coil (FSC) in the transmitter circuit and multiturn coil (MTC) in a receiver circuit (drone) for the alignment and misalignment of two coils at different distances. FSC and MTC improved power transfer and efficiency to 20.46 W and 85.25%, respectively, at 0 cm with the loaded system under alignment condition. In addition, the two coils achieved appropriate transfer efficiencies and power for charging the drone battery under misaligned conditions. The maximum power transfer and efficiency were 17.1 W and 71% for the misalignment condition, at an air gap of 1 cm between two coils when the system was loaded with the drone battery. Moreover, the battery life of the drone was extended to 851 minutes based on the proposed sleep/active strategy relative to the traditional operation (i.e., 25.84 minutes). Consequently, a 96.9% battery power saving was achieved based on this strategy. Comparison results showed that the proposed system outperformed some present techniques in terms of the transfer power, transfer efficiency, and drone battery life. The proposed WPT technique developed in this study has been proven to solve the misalignment issue. Thus it offers a great opportunity as a key deployment component for the automation of farming practices toward the Internet of Farming applications.INDEX TERMS Battery life, drone, energy efficiency, farming, flat spiral coil, flight time, multiturn coil, power consumption, wireless sensor network, solar panel. I. INTRODUCTIONDrones can be used in the agriculture field [1]-[3] to monitor crop yield and climate conditions and to extend the The associate editor coordinating the review of this manuscript and approving it for publication was el-Hadi M. Aggoune. communication range of monitoring areas. Drones can be equipped with several payloads, such as sensors, highresolution and infrared cameras, tracking, and a global positioning system (GPS), as a delivery vehicle [4]. These drones generally run on batteries powered with high energy, such as lithium batteries, to enable flight times of

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“…(i) This work is an extension to the previous study in [27]. The previous work was limited to lowpower-consumption home devices such as shavers, smartphones, and toothbrushes.…”

mentioning

confidence: 99%

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confidence: 99%

Wireless Power Transfer With Magnetic Resonator Coupling and Sleep/Active Strategy for a Drone Charging Station in Smart Agriculture

et al. 2019

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“…Wireless power transfer (WPT) has recently become common for charging portable devices [54,55]. In the current study, this approach was considered for charging the batteries of the HVSMS.…”

Section: Power Consumption Modelmentioning

confidence: 99%

Energy-Efficient Elderly Fall Detection System Based on Power Reduction and Wireless Power Transfer

Gharghan

Fakhrulddin

Al-Naji

et al. 2019

Sensors

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Elderly fall detection systems based on wireless body area sensor networks (WBSNs) have increased significantly in medical contexts. The power consumption of such systems is a critical issue influencing the overall practicality of the WBSN. Reducing the power consumption of these networks while maintaining acceptable performance poses a challenge. Several power reduction techniques can be employed to tackle this issue. A human vital signs monitoring system (HVSMS) has been proposed here to measure vital parameters of the elderly, including heart rate and fall detection based on heartbeat and accelerometer sensors, respectively. In addition, the location of elderly people can be determined based on Global Positioning System (GPS) and transmitted with their vital parameters to emergency medical centers (EMCs) via the Global System for Mobile Communications (GSM) network. In this paper, the power consumption of the proposed HVSMS was minimized by merging a data-event (DE) algorithm and an energy-harvesting-technique-based wireless power transfer (WPT). The DE algorithm improved HVSMS power consumption, utilizing the duty cycle of the sleep/wake mode. The WPT successfully charged the HVSMS battery. The results demonstrated that the proposed DE algorithm reduced the current consumption of the HVSMS to 9.35 mA compared to traditional operation at 85.85 mA. Thus, an 89% power saving was achieved based on the DE algorithm and the battery life was extended to 30 days instead of 3 days (traditional operation). In addition, the WPT was able to charge the HVSMS batteries once every 30 days for 10 h, thus eliminating existing restrictions involving the use of wire charging methods. The results indicate that the HVSMS current consumption outperformed existing solutions from previous studies.

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“…• Finally, a conclusive discussion will end the paper in Section 5. (Jawad et al, 2018) 2018 (Reatti et al, 2018) 2018 (Campi etal., 2018) 2018 (Elnail et al, 2018) 2018 (Tampubolon et al, 2018) 2018 (Choi et al, 2014a) Power…”

Section: Introductionmentioning

confidence: 99%

A Review of Methods and Challenges for Improvement in Efficiency and Distance for Wireless Power Transfer Applications

Kuka

Alkahtani

2020

Power Electronics and Drives

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Over the past few years, interest and research in wireless power transfer (WPT) have been rapidly incrementing, and as an effect, this is a remarkable technology in many electronic devices, electric vehicles and medical devices. However, most of the applications have been limited to very close distances because of efficiency concerns. Even though the inductive power transfer technique is becoming relatively mature, it has not shown near-field results more than a few metres away transmission. This review is focused on two fundamental aspects: the power efficiency and the transmission distance in WPT systems. Introducing the principles and the boundaries, scientific articles will be reviewed and discussed in terms of their methods and respective challenges. This paper also shows more important results in efficiency and distance obtained, clearly explaining the theory behind and obstacles to overcome. Furthermore, an overlook in other aspects and the latest research studies for this technology will be given. Moreover, new issues have been raised including safety and security.

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Single-Tube and Multi-Turn Coil Near-Field Wireless Power Transfer for Low-Power Home Appliances

Cited by 18 publications

References 47 publications

Wireless Power Transfer With Magnetic Resonator Coupling and Sleep/Active Strategy for a Drone Charging Station in Smart Agriculture

Wireless Power Transfer With Magnetic Resonator Coupling and Sleep/Active Strategy for a Drone Charging Station in Smart Agriculture

Energy-Efficient Elderly Fall Detection System Based on Power Reduction and Wireless Power Transfer

A Review of Methods and Challenges for Improvement in Efficiency and Distance for Wireless Power Transfer Applications

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