Thiagarajan Kripalakshmi, Deepa T, Mahalingam Prabhakar
School of Electrical Engineering, Vellore Institute of Technology, Chennai, India.
Centre for Smart Grid Technologies, Vellore Institute of Technology, Chennai, India.
Sci Rep. 2025 Sep 1;15(1):32242. doi: 10.1038/s41598-025-12741-w.
With a rising global population and vehicle usage, electric vehicles (EVs) have emerged as a sustainable solution for carbon neutrality. The paper's main objective is to test the performance of the optimized coil design for the Inductive power transfer (IPT) prototype designed for 48 V light EV (LEV) applications operating at 86 kHz. The coils are optimized for objectives such as compactness and power transfer efficiency, using a hybrid multi-objective optimization algorithm combining Taylor-series tuning and Dove Swarm (DSO) optimization. The optimized coil design achieved power transfer efficiency (PTE) of 94% with a voltage gain of 0.93 and current gain of 0.9. A minimum drop of approximately 0.7 V (1.5%) is observed between the primary to secondary coils. Simulation and hardware tests showed minimal voltage loss and strong coupling, validated for variable frequency operation. This shows the robustness of the LC optimized coil compact IPT system designed in this paper. Compact coil design in this research aids in high power transfer efficiency while reducing size, making it well-suited for LEV wireless charging.
随着全球人口和车辆使用量的不断增加，电动汽车已成为实现碳中和的可持续解决方案。本文的主要目标是测试为工作在86kHz的48V轻型电动汽车（LEV）应用设计的感应式电力传输（IPT）原型的优化线圈设计的性能。使用结合泰勒级数调谐和鸽群（DSO）优化的混合多目标优化算法，对线圈进行了紧凑性和功率传输效率等目标的优化。优化后的线圈设计实现了94%的功率传输效率（PTE），电压增益为0.93，电流增益为0.9。在初级线圈和次级线圈之间观察到最小约0.7V（1.5%）的压降。仿真和硬件测试表明电压损失最小且耦合良好，并针对变频运行进行了验证。这表明了本文设计的LC优化线圈紧凑型IPT系统的稳健性。本研究中的紧凑型线圈设计有助于提高功率传输效率，同时减小尺寸，使其非常适合LEV无线充电。
