scholarly journals Modelling and Practical Implementation of 2-Coil Wireless Power Transfer Systems

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Hong Zhou ◽  
Bin Zhu ◽  
Wenshan Hu ◽  
Zhiwei Liu ◽  
Xingran Gao
Keyword(s):  
Low Frequency ◽  
Wireless Power Transfer ◽  
Practical Implementation ◽  
Prototype System ◽  
Power Transfer ◽  
Wireless Power ◽  
Practical Applications ◽  
Exciting Frequency ◽  
Low Costs ◽  
Frequency Power

Wireless power transfer (WPT) based on inductive coupling could be potentially applied in many practical applications. It has attracted a lot of research interests in the last few years. In this paper, the modelling, design, and implementation of a 2-coil WPT system are represented. The prototype system can be implemented using conventional power electronic devices such as MOSFETs with very low costs as it works in relative low frequency range (less than 1 MHz). In order to find out about the optimal working area for the WPT system, the circuit model based on the practical parameters from the prototype is built. The relationships between the exciting frequency, coupling, and output power are analyzed based on the circuit and magnetic principles. Apart from the theoretic study, the detailed implementation of the WPT prototype including the coil design, digital frequency generation, and high frequency power electronics is also introduced in this paper. Experiments are conducted to verify the effectiveness of the circuit analysis. By carefully tuning the circuit parameters, the prototype is able to deliver 20 W power through 2.2 meter distance with 20–30% efficiency.

scholarly journals A Bioresorbable Magnetically Coupled System for Low‐Frequency Wireless Power Transfer

2019 ◽  
Vol 29 (46) ◽  
pp. 1905451 ◽  
Author(s):  
Qinglei Guo ◽  
Jahyun Koo ◽  
Zhaoqian Xie ◽  
Raudel Avila ◽  
Xinge Yu ◽  
...  
Keyword(s):  
Low Frequency ◽  
Wireless Power Transfer ◽  
Coupled System ◽  
Power Transfer ◽  
Wireless Power

scholarly journals A Novel Bidirectional Wireless Power Transfer System for Mobile Power Application

2019 ◽  
Vol 9 (18) ◽  
pp. 3769
Author(s):  
Yi-Hung Liao ◽  
Yue Lin
Keyword(s):  
Power Systems ◽  
Power Flow ◽  
Wireless Power Transfer ◽  
Prototype System ◽  
Transfer System ◽  
Power Transfer ◽  
Wireless Power ◽  
Wireless Power Transfer System ◽  
Power Application ◽  
Wearable Electronic Devices

This paper presents a bidirectional wireless power transfer system for mobile power applications. A novel 2-switch bidirectional wireless power transfer system with dual-side control is proposed for mobile power applications. Although only two switches are adopted, the energy can be transferred from the transmitter side to the receiver side and vice versa. The term bidirectional means that the power-flow is bidirectional and also that the transmitter is also a receiver and the receiver is also a transmitter. The output energy can be easily controlled by the duty ratios of the two switches. Thus, the proposed bidirectional power transfer system uses only one circuit to achieve bidirectional power transfer. Hence, the system cost and volume can be reduced so that the system is small and convenient for mobile power systems, portable and/or wearable electronic devices. A prototype system is constructed and the experimental results verify the validity of the proposed bidirectional wireless power transfer system.

Study on the transmission characteristics of magnetic resonance wireless power transfer system

2017 ◽  
Vol 9 (9) ◽  
pp. 1799-1807
Author(s):  
Xiufang Wang ◽  
Yu Wang ◽  
Yilang Liang ◽  
Guangcheng Fan ◽  
Xinyi Nie ◽  
...  
Keyword(s):  
High Efficiency ◽  
Magnetic Coupling ◽  
Wireless Power Transfer ◽  
Parameter Extraction ◽  
Magnetic Flux Density ◽  
Power Transfer ◽  
Wireless Power ◽  
Element Analysis ◽  
Practical Applications ◽  
Power Transfer Efficiency

Magnetic coupling resonance wireless power transfer technology has attracted worldwide attention in recent years due to its mid-range, non-radiative, and high-efficiency power transfer. However, in regard to its practical applications, there are still some issues that need to be considered and studied with respect to coil design, such as coil structure, and parasitic parameter extraction. This paper investigated the characteristics of magnetic coupling resonance wireless power transfer systems with different coil structures, including circular coils and rectangular coils arranged in parallel. We calculated the magnetic field distributions and mutual inductances by subdividing the receiving coils and computing the magnetic flux density of each subdivision. The proposed analysis was validated by means of the finite element analysis and the experimental results. We investigated the effects of the coil's structure, and topological structures, on the power transfer efficiency. The results demonstrate that using circular coils in parallel is more advantageous than using rectangular coils.

scholarly journals Wireless Charging of Electrical Vehicle on Road

2021 ◽  
pp. 270-276
Author(s):  
Mr. Suraj Hussainsaheb Mulla ◽  
Mr. Vipul Uddhav Hawale ◽  
Mr. Pradeep Ramrao More ◽  
Mr. Kiran Joy Mandumpal ◽  
Prof. Supriya Shigwan
Keyword(s):  
Electric Vehicles ◽  
Storage System ◽  
Selection Criterion ◽  
Wireless Power Transfer ◽  
Antenna System ◽  
Prototype System ◽  
Wireless Charging ◽  
Power Transfer ◽  
Wireless Power ◽  
Vehicle Charging

Electric vehicles are seen as an alternative option in response to the depletion of resources. In order to increase the use of EVs in daily life, practical and reliable methods to charge batteries of EVs are quite important, accordingly wireless power transfer (WPT) is considered as a solution to charge batteries. In this project, a prototype system of wireless charger which has 60 kHz operation frequency is designed and implemented. Plug-in Electric Vehicles (PEV) are burdened by the need for cable and plug charger, galvanic isolation of the on-board electronics, bulk and cost of this charger and the large energy storage system (ESS) packs needed. But by using Wireless Charging system‘s Wireless charging opportunity. It Provides convenience to the customer, inherent electrical isolation, regulation done on grid side and reduces on-board ESS size using dynamic on-road charging. The main objective of our project is to design and develop an antenna system suitable for vehicle using resonant magnetic coupled wireless power transfer technology to electric vehicle charging systems. Application of WPT in EVs provides a clean, convenient and safe operation. At the core of the WPT systems are primary and secondary coils. These coils construct a loosely coupled system where the coupling coefficient is between 0.1-0.5. In order to transfer the rated power, both sides have to be tuned by resonant capacitors. The operating frequency is a key selection criterion for all applications and it especially affects the dimensions of the coils and the selection of the components for the power electronic circuit. A Resonant wireless transfer system for vehicle charging technology is designed.

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