article · PLoS ONE
The expanding market for electric vehicles has heightened the need to improve charging technologies and resolve concerns over driving ranges. This research explores an improved wireless charging system using a circular spiral coil design for transmitter and receiver coils. Using simulation software, the magnetic field distribution, inductance, and mutual coupling between the coils were analysed. A direct shielding technique with a ferrite core bar was incorporated to guide the magnetic field lines, reducing flux leakage and raising transmission efficiency. Additionally, a series-series resonance compensation topology was introduced to maximise coupling efficiency. Co-simulation tests demonstrated that the system can transfer 3.6 kilowatts of power with a success rate approaching 99 percent, presenting a viable design for enhancing wireless vehicle charging performance.
Wireless charging can make electric vehicles more convenient by reducing reliance on physical cables and easing concerns over driving range. By minimising energy loss through better coil design and magnetic shielding, this work helps improve the efficiency and feasibility of charging systems needed for broader electric vehicle adoption.
This research targets wireless charging infrastructure for electric vehicles, which could benefit automotive manufacturers and charging equipment providers. Based on the abstract, the work is at the computational modelling and simulation stage, relying on software evaluation rather than physical prototype testing, indicating it remains in the early to middle phases of technology readiness.
AI-generated from the published abstract. Always read the original work before citing.
The current electric vehicles (EVs) market is experiencing significant expansion, underscoring the need to address challenges associated with the limited driving range of EVs. A primary focus in this context is the improvement of the wireless charging process. To contribute to this research area, this study introduces a circular spiral coil design that incorporates transceiver coils. First, an in-depth analysis is conducted using Ansys Maxwell software to assess the effectiveness of the proposed solution through the magnetic field distribution, inductance properties, and mutual inductance between receiver and transmitter coils. In the next step, a direct shielding technique is applied, integrating a ferrite core bar to reduce power leakage and enhance power transmission efficiency. The ferrite magnetic shielding guides magnetic field lines, resulting in a significant reduction in flux leakage and improved power transmission. Lastly, a magnetic resonance series (SS) compensation wireless system is developed to achieve high coupling efficiency and superior performance. The system's effectiveness is evaluated through co-simulation using Ansys Simplorer software. The results confirm the effectiveness of the proposed solution, showing its ability to transmit 3.6 kilowatts with a success rate approaching 99%. This contribution significantly advances the development of wireless charging systems for electric vehicles, addressing concerns and promoting global adoption.
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DOI: 10.1371/journal.pone.0300550
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