Research on Self-Decoupling Segmented Coil Rail and Dual-Mode Switching Strategy of Dynamic Wireless Charging System
Published in Proceedings of the CSEE, 2023
DOI link: 10.13334/j.0258-8013.PCSEE.230797
Keywords: Electric Vehicles, Dynamic Wireless Charging, Self-Decoupling, Position Detection, Dual-Mode Switching.
What - Clarification of the Core Content:
- This study introduces a dynamic wireless charging system for electric vehicles that includes a self-decoupled segmented transmitter rail to mitigate cross-coupling effects and offers a stable charging process.
- The proposed system analyzes self-decoupling between adjacent transmitter coils, using naturally decoupling orthogonal solenoid and square coils to improve position detection and charging stability.
- A strategy involving two operational modes is presented, allowing the activation of one or two transmitter coils based on the optimal charging area.
Why - Analysis of the Purpose:
- The study aims to address the challenges of cross-coupling between transmission coils in dynamic wireless charging systems for electric vehicles and to enhance the efficiency and stability of the charging process.
- The study seeks to simplify the design of the compensation topology by naturally decoupling the coils and improving the position detection of the receiver.
How - Description of the Methods Used:
- The system design incorporates hierarchical windings of solenoid coils to establish natural decoupling and avoid interference between detection signals and power delivery.
- A solenoid-detecting coil, orthogonally wounded on the receiver coil, is used for precise position detection, ensuring reliable and accurate operation.
- Simulation analysis and an experimental platform validate the feasibility and practicality of the proposed design, showcasing improved performance and efficiency.
Key Findings and Insights:
- The self-decoupled segmented transmitter rail demonstrated a significant reduction in cross-coupling effects and enhanced the system’s performance, leading to more stable charging.
- The dual-mode working method and segmented switching strategy provided adaptive control over the power delivery process, improving the system’s output power stability.
Examples of Critical Solutions Proposed:
A novel coil structure design and mode switching control strategy are proposed to achieve a dynamic wireless charging system that is more efficient and reliable.
The study presents an experimental platform to showcase the practical application of the proposed system, achieving high efficiency and stability in electric vehicle charging.
Research Gaps and Future Work:
- While the study provides innovative solutions for dynamic wireless charging, further research is encouraged to explore additional applications and optimizations for varying electric vehicle charging scenarios.
Recommended citation: Xian Zhang, Weida Xu, Fengxian Wang*, Chaoyang Yuan, Qingxin Yang, Zhongyu Dai. Research on Self-Decoupling Segmented Coil Rail and Dual-Mode Switching Strategy of Dynamic Wireless Charging System. Proceedings of the CSEE. Early Access.
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