The Impact of Magnetic Resonance Coupling in Electric Vehicle Power Transfer Systems

Abstract

This research investigates the innovative use of Magnetic Resonance Coupling (MRC) in Electric Vehicle (EV) power transfer, focusing on its potential and challenges. Key objectives include understanding MRC\'s operational principles, optimizing efficiency, and tackling real-world EV charging issues. Essential components like coil design, resonance frequency tuning, and power control are covered, utilizing MATLAB and Simulink for performance simulation under various conditions. The impact of MRC on EV charging infrastructure is highlighted, emphasizing advancements in power transmission and efficiency. The findings promise to revolutionize EV charging, leading to more efficient, convenient, and sustainable power transfer methods.

Introduction

I. INTRODUCTION

The advent of Magnetic Resonance Coupling Wireless Power Transfer (MCR-WPT) technology has revolutionized various industries by enabling the transmission of substantial power with high efficiency and over extended distances. This technology, with its wide-ranging applications in electric vehicles, medical devices, robots charging, and rails transition power supply, has particularly garnered attention in the electric power industry, where it is instrumental in enhancing safety and efficiency.

However, one significant challenge faced by electric inspection robots, Essential for guaranteeing safe and reliable power systems., has been the existing

contact-based charging methods. These methods are plagued by issues like electric sparks, leakage, and cable deterioration, posing serious threats to power system operation. This technology emerges as a promising solution, offering wireless charging capabilities that mitigate these challenges, ensuring seamless power supply to robots, vital for independent and uninterrupted operation.

This research explores the integration of WPT into the charging systems for electric inspection robots. aiming to optimize charging processes. Traditionally, charging batteries involves complex stages like constant currents (CC) and constant voltages (CV) charging, which necessitate precise control mechanisms. Current methods, though effective, often involve intricate communication systems between primary and secondary sides, increasing complexity and cost. To overcome these limitations, this study proposes an innovative T-type resonance compensation network coupled with hybrid self-switching resonant networks (LCL-LCL/S) for wireless charging..

A. Operation of  Wireless Charging System

The resonance wireless charging system operates by converting a standard AC source into a form suitable for wireless power transfer and ultimately charging a battery efficiently. The process begins with an AC source at 325V,(as per Qi standards)  50A, and 50Hz frequency.

B. Rectification

The AC power is first converted into DC using a bridge rectifier. The output of the rectifier is 280V DC at 20A. The rectification process is governed by the formula:

Conclusion

The project effectively showcases the potential of a resonance wireless charging system for electric vehicles. By leveraging magnetic resonance coupling and high-frequency power electronics, the system achieves efficient and reliable wireless power transfer. This innovative approach significantly enhances power transmission efficiency and distance, offering a convenient alternative to traditional wired charging. Comprehensive analysis and simulation, supported by practical implementation, validate the system\'s effectiveness. This work paves the way for future advancements in EV charging technology, promoting a sustainable and user-friendly charging infrastructure that can revolutionize the electric vehicle industry.

References

[1] Y. Zhang, Z. Shen, W. Pan et al., “Constant Current and Constant Voltage Charging of Wireless Power Transfer System Based on ThreeCoil Structure,” IEEE Transactions on Industrial Electronics, Vol. 70, No. 1, pp. 1066-1070, January 2023. [2] Kurs A, Karalis A, Moffatt R, et al. Wireless power transfer via strongly coupled magnetic resonances. Science 2007;317(5834):83–6. [2] Kim JW, Son HC, Kim KH, et al. Efficiency analysis of magnetic resonance wireless power transfer with intermediate resonant coil. IEEE Antennas Wirel Propag Lett 2011;10:389–92. [3] Li Hongchang, Li Jie, Wang Kangping, et al. A maximum efficiency point tracking control scheme for wireless power transfer systems using magnetic resonant coupling. IEEE Trans Power Electron 2015;30(7):3998–4008. [4] Yang Chen, Zhihao Kou, Youyuan Zhang, et al. Hybrid topology with configurable charge current and charge voltage output-based WPT charger for massive electric bicycles. IEEE J Emerg Sel Top Power Electron 2018;6(3):1581–93.

Copyright

Copyright © 2024 B. Pranesh, Dr G. Suresh Babu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.