scholarly journals Beam Shaping for Wireless Optical Charging with Improved Efficiency

Crystals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 970
Author(s):  
Lei Tian ◽  
Jiewen Nie ◽  
Haining Yang
Keyword(s):  
Beam Shaping ◽  
Optical Beam ◽  
Limiting Factor ◽  
Power Transfer ◽  
Optical Wireless ◽  
Long Distance ◽  
Charging System ◽  
Shaping System ◽  
Transfer Method ◽  
Frequency Power

Optical wireless charging is a nonradiative long-distance power transfer method. It may potentially play an important role in certain scenarios where access is challenging, and the radio frequency power transfer is less efficient. The divergence of the optical beam over distances is a key limiting factor for the efficiency of any wireless optical charging system. In this work, we propose and experimentally demonstrate a holographic optical beam shaping system that can restrict the divergence of the optical beam. Our experimental results showed up to 354.88% improvement in the charging efficiency over a 10 m distance.

scholarly journals Convolutional neural network as a tool for automatic alignment of electron optical beam shaping devices

2021 ◽  
Vol 27 (S1) ◽  
pp. 822-824
Author(s):  
Enzo Rotunno ◽  
Amir Tavabi ◽  
Paolo Rosi ◽  
Stefano Frabboni ◽  
Peter Tiemeijer ◽  
...  
Keyword(s):  
Neural Network ◽  
Convolutional Neural Network ◽  
Beam Shaping ◽  
Optical Beam ◽  
Automatic Alignment

Composite method for precise freeform optical beam shaping

2015 ◽  
Vol 54 (31) ◽  
pp. 9364 ◽  
Author(s):  
Zexin Feng ◽  
Brittany D. Froese ◽  
Rongguang Liang
Keyword(s):  
Beam Shaping ◽  
Optical Beam ◽  
Composite Method

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

Beam shaping system

1991 ◽  
Author(s):  
J. A. MacAndrew ◽  
Mark R. Humphries ◽  
W. T. Welford ◽  
John A. Golby ◽  
Peter H. Dickinson ◽  
...  
Keyword(s):  
Beam Shaping ◽  
Shaping System

scholarly journals Comparative Analysis of Coil Structures and Orientations of Single Transmitter and Multi Receivers Wireless Power Transfer System

2021 ◽  
Vol 309 ◽  
pp. 01118
Author(s):  
CH Jagadeesh ◽  
Phaneendra Babu Bobba
Keyword(s):  
Control Systems ◽  
Transfer System ◽  
Power Transfer ◽  
Wireless Power ◽  
Maglev Train ◽  
Long Distance ◽  
Strongly Coupled ◽  
Multiple Loads ◽  
Single Coil ◽  
Wireless Power Transfer System

Single transmitter and multi receiver (STMR) based WPT system is used to power multiple loads at a time. It consists of some limitations like long distance power transfer, mutual inductance between receiver coils and misalignment of receiver coils. this paper is going to give a detailed information about different designs of STMR, which are going to overcome the limitations of STMR. Different designs proposed by different authors are wireless power repeater system with single coil in each repeater, wireless power repeater system with two coils in each repeater, spherical strongly coupled magnetic resonant, square shape coils, maglev train IPT system and cube shaped unidirectional flux transmitter type. The above-mentioned designs are analysed and concluded a best design from it, depending up on applications and discussed about the control systems used in STMR.

scholarly journals Generation of propagation-invariant and intensity-controlled dark hollow beams by a refractive beam shaping system

2018 ◽  
Vol 26 (20) ◽  
pp. 26385
Author(s):  
Shengqian Chang ◽  
Xiao Tao ◽  
Rengmao Wu ◽  
Yi Sun ◽  
Zhenrong Zheng
Keyword(s):  
Beam Shaping ◽  
Shaping System ◽  
Hollow Beams

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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