scholarly journals Design and Realization of a Multiple Access Wireless Power Transfer System for Optimal Power Line Communication Data Transfer

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 988 ◽  
Author(s):  
Sami Barmada ◽  
Mauro Tucci ◽  
Nunzia Fontana ◽  
Wael Dghais ◽  
Marco Raugi
Keyword(s):  
Performance Optimization ◽  
Power Efficiency ◽  
Multiple Access ◽  
Data Transfer ◽  
Wireless Power Transfer ◽  
Access Point ◽  
Power Transfer ◽  
Wireless Power ◽  
Efficient Data ◽  
Wireless Power Transfer System

In this contribution, the authors evaluate the possibility of using separated access points for power and data transfer in a coupled Wireless Power Transfer-Powerline Communication system. Such a system has been previously proposed by the authors for specific applications, in which Wireless Power Transfer (WPT) should take place in a system where data are transmitted over the power grid. In previous works the authors have performed lab tests on a two coils WPT system equipped with a set of filters to also allow an efficient data transfer. When a multiple coil WPT system is chosen, additional possibilities arise: the access point for power and data can be differentiated, with the aim of maintaining the designed power efficiency and increase data transfer capacity. In this study a four coils WPT system is thoroughly analyzed, modelled, implemented and measured, and a set of guidelines for the correct design (in terms of performance optimization) of the data transfer is given.

scholarly journals Method for detecting vertical offset of coupling coil using signal coil based on magnetic coupling resonance wireless power transfer system

2021 ◽  
Vol 248 ◽  
pp. 02010
Author(s):  
Ye Zhaohong ◽  
Gao Yuan
Keyword(s):  
Data Transfer ◽  
Magnetic Coupling ◽  
Wireless Power Transfer ◽  
Exponential Fitting ◽  
Coupling Mechanism ◽  
Transfer System ◽  
Power Transfer ◽  
Wireless Power ◽  
Position Detection ◽  
Wireless Power Transfer System

To improve the reliability in wireless power transfer system, communication is widely used. An independent coil as the signal coil for data transfer has the advantage of decoupling power coupling mechanism and signal coil when designing the system. Besides, in some application, vertical offset of the power coil may impact the stability of the system, position detection of the receiver side power coil is needed. Method of using the signal coil for vertical offset detection is adopted in this paper, simulation result verified the feasibility. The vertical offset of the power coil can be estimated by an exponential function based on the system parameter and the current of the primary side power coil. The exponential fitting function used in the paper can be used as a reference when designing the detection.

scholarly journals Enabling Wireless Power Transfer and Multiple Antennas Selection to IoT Network Relying on NOMA

2020 ◽  
Vol 26 (5) ◽  
pp. 59-65
Author(s):  
"Si-Phu Le ◽  
Minh-Sang Van Nguyen ◽  
Dinh-Thuan Do ◽  
Hong-Nhu Nguyen ◽  
Ngoc-Long Nguyen ◽  
...  
Keyword(s):  
Fading Channels ◽  
Multiple Access ◽  
Antenna Selection ◽  
Relay Node ◽  
Wireless Power Transfer ◽  
Access Point ◽  
Power Transfer ◽  
Wireless Power ◽  
System Improvement ◽  
Access Technique

Wireless Power Transfer (WPT) is a significant technique for Internet of Things (IoT) networks. Recently, more interest has been focused on multiple access technique without orthogonal signals for wireless communication. Non-orthogonal Multiple Access (NOMA) scheme is proposed to allow users the access point in IoT network. In this paper, we propose the power beacon which is able to feed energy to power-constraint relay node to further support transmission from the source to destinations in IoT networks. In this article, a NOMA system is benefited by with WPT and antenna selection technique. The system improvement can be achieved through the exact closed-form expressions of outage probability (OP). The performance gap among two users is evaluated using model of the Rayleigh fading channels. Furthermore, we compare NOMA with traditional scheme to highlight advantage of such IoT system.

scholarly journals Characteristics Study of Wireless Power Transfer with Series-series Inductive Magnetic Coupled Principle

2019 ◽  
Vol 1 (1) ◽  
pp. 1-6
Author(s):  
Ahmad Raditya Cahya
Keyword(s):  
Power Efficiency ◽  
Wireless Power Transfer ◽  
Input Voltage ◽  
Active Power ◽  
Transfer System ◽  
Power Transfer ◽  
Wireless Power ◽  
Current Voltage ◽  
Overall Performance ◽  
Wireless Power Transfer System

The wireless power transfer system using series-series inductive coupled magnetic resonance is studied in this work. The research is conducted using two separated circular coil facing each other serving as transmitter and reciver coil respectively. The effect of distance variation between two coils as well as loading variation to power efficiency and other electrical properties such as current, voltage, active power, and efficiency are observed. The coil's number of turn, transmitter input voltage, coil's attitude, and electrical frequency of the system are kept constant. The results show that the inter-coil distance value affect the overall performance of wireless power transfer system and match the theoretical prediction.

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