A coreless hybrid magnetic coupling coil structure for dynamic wireless power charging 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 .

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A Structure Parameter Design Method of DD Coils to Optimize Coupling Performance and Misalignment-tolerant Ability

E3S Web of Conferences ◽

10.1051/e3sconf/202018501084 ◽

2020 ◽

Vol 185 ◽

pp. 01084

Author(s):

Wei Zhang ◽

Fusheng Wang ◽

Juanjuan Guo ◽

Longfeng Ye

Keyword(s):

Design Method ◽

Magnetic Coupling ◽

Element Model ◽

Parameter Design ◽

Wireless Charging ◽

Structure Parameter ◽

Charging System ◽

Coupling Structure ◽

Coil Structure ◽

Coupling Performance

Aiming at the problems of weak coupling performance and poor misalignment-tolerant ability of the magnetic coupling structure of electric vehicle wireless charging system, this paper proposes a coil structure parameter design method. This paper analyzes the relationship between the system characteristics and the coupling coefficient of the wireless charging system based on the dual LCC resonant compensation network. Then, based on the analysis of the structure parameters of DD coils, a structure parameter design method to optimize coupling performance and misalignment-tolerant ability is proposed. Finally, the ANSYS MAXWELL 3-D finite element model of the DD magnetic coupling structure is built, and the validity and feasibility of the proposed design method are verified by simulation. Under the design method of coil structure parameter in this paper, the magnetic coupling structure can achieve excellent coupling performance and misalignment-tolerant ability.

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Design of a one kilowatt wireless charging system for electric vehicle in line with Bharath EV standards

International Journal of Emerging Electric Power Systems ◽

10.1515/ijeeps-2020-0178 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Sandeep Vuddanti ◽

Shivanand M N ◽

Surender Reddy Salkuti

Keyword(s):

Electric Vehicle ◽

Electronic System ◽

Receiver Coil ◽

Power Electronic ◽

Efficient Design ◽

Wireless Power ◽

Charging System ◽

Coil Structure ◽

Safety And Reliability ◽

Ev Model

Abstract Emerging technologies in an electric vehicle (EV) had greater advancement in the control, batteries and electric motors design. But safety and reliability are the major concerns when the consumer is dealing with a high voltage conductor for charging. The recurring of plugging in the switch for charging is an undeniable disadvantage. Therefore, to eliminate the human intervention in charging of a battery, wireless power transfer (WPT) will be the most effective methodology to charge the EV. This paper aims at building the prototype of 1 kW inductive WPT with high frequency supply with power converters. To design this system, standards of EV charging systems are incorporated; also, a suitable coil structure is identified for the given EV model as per the standards. The mismatch or misalignment of the receiver coil, air gap between receiver–transmitter (i.e., proximity) and compensation techniques are considered in this work. Efficient design of power electronic converter is implemented for both transmitter and receiver side. Both coil design model and the power electronic system are integrated to test the performance of proposed WPT technology.

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

Journal of Applied Biomaterials & Functional Materials ◽

10.1177/2280800018757335 ◽

2018 ◽

Vol 16 (1_suppl) ◽

pp. 140-149 ◽

Cited By ~ 3

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.

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