A Novel Optimization Method of Compensation Network Parameters for LCC Topology Wireless Power Transfer System With Anti-Offset Characteristics

作者：Yang Lu, Dongyuan Ge, Lian Meng, C. Sun, Qi Tang, Yilin Gao, Mengmeng Chen, Chenyang Xia · 发表于：IEEE Access · 年份：2023 · DOI：10.1109/access.2023.3347738 · 被引用次数：13 · 研究领域：Wireless Power Transfer Systems、Energy Harvesting in Wireless Networks、Advanced DC-DC Converters

For the coil misalignment problem in the charging process of automatic guidance vehicles (AGVs). This paper proposes an optimization method for the bilateral LCC compensation network parameters based on quadruple-D quadrature (4DQ) coils. By introducing two coefficientsKTandKf1, the compensation capacitorsCTandCf1are optimized, achieving smaller output power fluctuations. Firstly, the capacitor valuesCTandCf1at resonance in the SS and PS equivalent circuit topology are obtained, meanwhile, the relationship between the output powerPoutand the coupling coefficientk, represented by the coefficientsKTandKf1, is obtained. Furthermore, with the transmission efficiency as the limiting condition, the output power fluctuation is effectively suppressed by adjustingKTandKf1. Finally, the experimental results show that after optimization the output power is 427.08W, the transmission efficiency is 93.506% when the coupling coil are aligned; The system can still maintain a power output of at least 382.36W with a coil offset of 0-153mm in the X/Y axis directions, and the transmission efficiency is always above 89.472%. At the same time, the maximum deviation value ΔPabs_maxdecreased from 213.1W before optimization to 111.0W after optimization, a decrease of 47.91%, effectively suppressing the power fluctuation and improving anti-offset performance.