scholarly journals Study on electromagnetic characteristics of the magnetic coupling resonant coil for the wireless power transmission system

2018 ◽  
Vol 16 (1_suppl) ◽  
pp. 140-149 ◽  
Author(s):  
Zhongxian Wang ◽  
Yiping Liu ◽  
Yonggeng Wei ◽  
Yilin Song
Keyword(s):  
Output Power ◽  
Power Transmission ◽  
Magnetic Coupling ◽  
Transmission Efficiency ◽  
Transmission System ◽  
The Novel ◽  
Wireless Power ◽  
Energy Transmission ◽  
Coil Structure ◽  
The Relationship

Background: The resonant coil design is taken as the core technology in the magnetic coupling resonant wireless power transmission system, which achieves energy transmission by the coupling of the resonant coil. This paper studies the effect of the resonant coil on energy transmission and the efficiency of the system. Combining a two-coil with a three-coil system, the optimum design method for the resonant coil is given to propose a novel coil structure. Methods: First, the co-simulation methods of Pspice and Maxwell are used. When the coupling coefficient of the resonant coil is different, the relationship between system transmission efficiency, output power, and frequency is analyzed. When the self-inductance of the resonant coil is different, the relationship between the performance and frequency of the system transmission is analyzed. Then, two-coil and three-coil structure models are built, and the parameters of the magnetic field of the coils are calculated and analyzed using the finite element method. In the end, a dual E-type simulation circuit model is used to optimize the design of the novel resonance coil. Results: The co-simulation results show that the coupling coefficients of the two-coil, three-coil, and novel coil systems are 0.017, 0.17 and 0.0126, respectively. The power loss of the novel coil is 16.4 mW. Conclusions: There is an obvious improvement in the three-coil system, which shows that the magnetic leakage of the field and the energy coupling are relatively small. The new structure coil has better performance, and the load loss is lower; it can improve the system output power and transmission efficiency.

Pulse-Driving Based Magnetic Coupling Resonant Wireless Power Transmission System Research

2011 ◽  
Vol 378-379 ◽  
pp. 539-542
Author(s):  
Qiang Wang ◽  
Hong Li
Keyword(s):  
Optimization Design ◽  
Power Transmission ◽  
Magnetic Coupling ◽  
Transmission Efficiency ◽  
Transmission System ◽  
System Research ◽  
Wireless Power ◽  
Wireless Power Transmission ◽  
Power Transmission System ◽  
Magnetic Resonances

This paper analyses and designs a kind of pulse-driving based wireless power transmission system via coupled magnetic resonances. It analyzes the influence of the related parameters on the transfer efficiency and transfer power of the system. The experiment tests the proposed wireless power transmission system, and the results show that the above relevant parameters should be comprehensively considered, in order to achieve the optimization design of the transmission efficiency or transmission power. The experiment results also show the validity of the theoretical analysis.

scholarly journals A Frequency Locking Method for ICPT System Based on LCC/S Compensation Topology

Energies ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2626
Author(s):  
Yansong Li ◽  
Minhao Wang ◽  
Weiwei Zhang ◽  
Mengmeng Zhao ◽  
Jun Liu
Keyword(s):  
Output Power ◽  
Power Transmission ◽  
Transmission Efficiency ◽  
Maximum Efficiency ◽  
Initial Value ◽  
Frequency Locking ◽  
Inductively Coupled ◽  
Output Characteristics ◽  
The Relationship

Aiming to maximize the transmission efficiency of inductively coupled power transmission (ICPT) system with the designed output power, a frequency locking method for an ICPT system based on LCC/S compensation topology is proposed in this paper. Firstly, the relationship between compensation component Lf1 and output power was deduced by the lossless model, and the initial value of Lf1 was obtained. Then, considering the system loss, the designed output power and frequency were input into the frequency locking program, and Lf1 and other compensation parameters were dynamically tracked. At the same time, the transmission efficiency of the system was calculated, and the frequency that achieved maximum efficiency was automatically locked when the system met the requirements of the designed output power. Finally, based on the method, the output characteristics of the system were verified by experiments.

Optimization Method of the Transcutaneous Energy Transmission System with Given Output Power

2012 ◽  
Vol 195-196 ◽  
pp. 1169-1174
Author(s):  
Liang Yu Bai ◽  
Yu Zheng ◽  
Hou Jun Tang
Keyword(s):  
Output Power ◽  
Magnetic Coupling ◽  
Optimization Method ◽  
Transmission Efficiency ◽  
Energy Transmission ◽  
Bifurcation Phenomenon ◽  
Design Variables ◽  
Transcutaneous Energy Transmission

Transcutaneous energy transmission (TET) systems are designed to deliver power from an in vitro primary power source to in vivo implantable secondary over relatively large air gaps via magnetic coupling. This paper proposes an optimization method with given output power to meet different practical application. The transmission efficiency is the objective function; primary and secondary coils are design variables; constraints are based on bifurcation phenomenon and components peak over-voltage and peak withstand current. We have used MATLAB/ SIMULINK to verify the analytical results.

Characteristic Research on Wireless Power Transfer Based on Magnetic Coupling Resonant

2014 ◽  
Vol 687-691 ◽  
pp. 3379-3382
Author(s):  
Shui Xiang Cui ◽  
Zhi Juan Zhang ◽  
Xue Mei Liang
Keyword(s):  
Theoretical Analysis ◽  
Power Transmission ◽  
Magnetic Coupling ◽  
Load Resistance ◽  
Transmission Efficiency ◽  
Wireless Power ◽  
Load Power ◽  
Transmission Distance ◽  
Working Principle ◽  
Coil Size

This paper analyses the working principle of magnetic coupling resonant wireless power transmission system based on mutual inductance coil model, and then gets the expressions of load power and transmission efficiency. By the theoretical analysis the relations between the various system parameters such as: coil size, transmission distance, load resistance, the resonant frequency and load power, transmission efficiency are obtained. According to the results of theoretical analysis, the system’s characteristics of load power and transmission efficiency with varying transmission distance are studied. Finally, simulations verify the accuracy of analysis by Matlab/Simulink.

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