scholarly journals Design and Optimization of Coupling Coils for Bidirectional Wireless Charging System of Unmanned Aerial Vehicle

Electronics ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1964
Author(s):  
Yang Li ◽  
Xin Ni ◽  
Jiaming Liu ◽  
Rui Wang ◽  
Jingnan Ma ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Lightweight Design ◽  
Wireless Charging ◽  
Power Transfer ◽  
Design And Optimization ◽  
Charging System ◽  
Transmission Distance ◽  
System A ◽  
Power Transfer Efficiency ◽  
Aerial Vehicle

To solve the battery power supply problem with wireless sensor networks (WSNs), a novel bidirectional wireless charging system is proposed, in which an unmanned aerial vehicle (UAV) can fly to the WSNs to charge sensors through high-frequency wireless power transfer (WPT) and also obtain energy for its own battery in the same way. To improve the performance of the UAV bidirectional wireless charging system, a lightweight design is adopted to increase its loading capacity and working time. Moreover, the radii and the numbers of turns and pitches of coupling coils were designed and optimized on the basis of simulations and experiments. Experimental results show that the weight of optimized UAV coil was reduced by 34.45%. The power transfer efficiency (PTE) of the UAV coil to sensor coil increased from 60.2% to 74.4% at a transmission distance of 15 cm, while that of the ground transmitting coil to UAV coil increased from 65.2% to 90.1% at 10 cm.

scholarly journals Efficient wireless charging system for supercapacitor-based electric vehicle using inductive coupling power transfer technique

2019 ◽  
Vol 11 (11) ◽  
pp. 168781401988696
Author(s):  
Ahsan Elahi ◽  
Arslan Ahmed Amin ◽  
Umar Tabraiz Shami ◽  
Muhammad Tayyab Usman ◽  
Muhammad Sajid Iqbal
Keyword(s):  
Electric Vehicle ◽  
Inductive Coupling ◽  
Wireless Charging ◽  
Power Transfer ◽  
Charging System ◽  
Energy Demands ◽  
Experimental Implementation ◽  
Power Transfer Efficiency ◽  
The Cost ◽  
Mathematical Relationships

Wireless charging has become an emerging challenge to reduce the cost of a conventional plug-in charging system in electric vehicles especially for supercapacitors that are utilized for quick charging and low-energy demands. In this article, the design of an efficient wireless power transfer system has been presented using resonant inductive coupling technique for supercapacitor-based electric vehicle. Mathematical analysis, simulation, and experimental implementation of the proposed charging system have been carried out. Simulations of various parts of the systems are carried out in two different software, ANSYS MAXWELL and MATLAB. ANSYS MAXWELL has been used to calculate the various parameters for the transmitter and receiver coils such as self-inductance ( L), mutual inductance ( M), coupling coefficient ( K), and magnetic flux magnitude ( B). MATLAB has been utilized to calculate output power and efficiency of the proposed system using the mathematical relationships of these parameters. The experimental setup is made with supercapacitor banks, electric vehicle, wattmeters, controller, and frequency generator to verify the simulation results. The results show that the proposed technique has better power transfer efficiency of more than 75% and higher power transfer density using a smaller coil size with a bigger gap of 4–24 cm.

scholarly journals Effect of Coil Structure on the Efficiency of Wireless Power Transfer System

2019 ◽  
Vol 9 (2) ◽  
pp. 3387-3392
Keyword(s):  
Wireless Power Transfer ◽  
Receiver Coil ◽  
Transfer System ◽  
Wireless Charging ◽  
Power Transfer ◽  
Wireless Power ◽  
Charging System ◽  
Coil Structure ◽  
Power Transfer Efficiency ◽  
Wireless Power Transfer System

A typical magnetic resonance based wireless power transfer (WPT) system comprises a transmitter coil and an embedded receiver coil used for wireless charging of the electrical and electronics devices. It has been investigated that the coil structure influence the power transfer efficiency of the wireless charging system .The investigations have been carried out in order to determine a suitable coil type and geometry so as to achieve higher efficiency of a wireless power transfer system. The present investigation will afford the design strategy for an efficient wireless charging system .

scholarly journals A New Hybrid Magnetic Coupler for Large Misalignment Tolerance in Inductive Power Transfer System

2021 ◽  
Vol 2108 (1) ◽  
pp. 012080
Author(s):  
Zhongxiu Hao ◽  
Pengcheng Fu ◽  
Pengfei Cao
Keyword(s):  
Mutual Inductance ◽  
Experimental Results ◽  
Transfer System ◽  
Wireless Charging ◽  
Power Transfer ◽  
Inductive Power Transfer ◽  
System Parameters ◽  
Charging System ◽  
System A ◽  
Large Misalignment Tolerance

Abstract Wireless charging has been widely used in a variety of applications. However, pad misalignment can influence system parameters that can lead to increased losses as well as reduction in power throughput. In this article, a new coupler based on solenoid-quadrature coils (SQ) is proposed. By combining with hybrid compensation networks, this coupler can stabilize the system mutual inductance within a certain offset range in order to keep power throughput at a certain level. As a result, this coupler can greatly improve the anti-misalignment capability of the wireless charging system. A 20W prototype is developed and tested in the lab. The experimental results validate that the proposed hybrid SQ-SQ coupler system has an improved misalignment performance.

Maximum Power Transfer of Wireless Charging System Using a Data-Based Approach

2021 ◽  
Author(s):  
Balaji Sriram ◽  
Sanjeevikumar Padmanaban ◽  
Vidhya Sagar Devendran ◽  
Sharmeela Chenniappan ◽  
Elango Sundaram
Keyword(s):  
Maximum Power ◽  
Wireless Charging ◽  
Power Transfer ◽  
Charging System

Unmanned Aerial Vehicle-Based Wireless Charging of Sensor Networks

2016 ◽  
pp. 433-464 ◽  
Author(s):  
Carrick Detweiler ◽  
Michael Eiskamp ◽  
Brent Griffin ◽  
Jennifer Johnson ◽  
Jinfu Leng ◽  
...  
Keyword(s):  
Sensor Networks ◽  
Unmanned Aerial Vehicle ◽  
Wireless Charging ◽  
Aerial Vehicle

scholarly journals Design of a wireless power transfer system for assisted living applications

2019 ◽  
Vol 6 (1) ◽  
pp. 41-56 ◽  
Author(s):  
Qassim S. Abdullahi ◽  
Rahil Joshi ◽  
Symon K. Podilchak ◽  
Sadeque R. Khan ◽  
Meixuan Chen ◽  
...  
Keyword(s):  
Assisted Living ◽  
Performance Indicator ◽  
The Elderly ◽  
Consumer Electronics ◽  
Electronic Systems ◽  
Wireless Charging ◽  
Power Transfer ◽  
Electronic Textiles ◽  
Wireless Power ◽  
Charging System

Advances in material science and semiconductor technology have enabled a variety of inventions to be implemented in electronic systems and devices used in the medical, telecommunications, and consumer electronics sectors. In this paper, a wireless charging system is described as a wearable body heater that uses a chair as a transmitter (Tx). This system incorporates the widely accepted Qi wireless charging standard. Alignment conditions of a linear three-element coil arrangement and a 3 × 3 coil matrix array are investigated using voltage induced in a coil as a performance indicator. The efficiency obtained is demonstrated to be up to 80% for a voltage of over 6.5 Volts and a power transfer of over 5 Watts. Our results and proposed approach can be useful for many applications. This is because the wireless charging system described herein can help design seating areas for the elderly and disabled, commercial systems, consumer electronics, medical devices, electronic textiles (e-textiles), and other electronic systems and devices.

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