Kim Hyunwoo, Yoo Seungwon, Joo Hyunwoo, Lee Jongheon, An Donggeun, Nam Seonghyeon, Han Hyungu, Kim Dae-Hyeong, Kim Sanghoek
Department of Electronic Engineering, Kyung Hee University, Yongin-si 17104, Republic of Korea.
Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.
Sci Adv. 2022 Jun 17;8(24):eabo4610. doi: 10.1126/sciadv.abo4610. Epub 2022 Jun 15.
Recently, stationary wireless power transfer (WPT) has been widely adopted in commercial devices. However, the current WPT configuration is limited in its operational area and susceptible to operating condition changes, impeding its applications for dynamic environments. To overcome the limitations, we propose a WPT system with laterally aligned neutral elements in parity-time (PT) symmetry, which can widen the operational area with the number of neutrals . Compared to the conventional multiple-input-single-output WPT, the dimension of system complexity is substantially reduced from × to because the neutral amplitudes are simply controlled by coupling capacitors. The operational frequency is automatically adjusted to a real eigenvalue of the PT-symmetric system to achieve high voltage gain and efficiency, making the system robust. The performance of the system calculated by the coupled-mode theory was experimentally verified with rigid and flexible types of receivers, confirming its potential in both industrial and biomedical electronics.
最近，静态无线电力传输（WPT）已在商业设备中广泛应用。然而，当前的WPT配置在其操作区域上受到限制，并且易受操作条件变化的影响，这阻碍了其在动态环境中的应用。为了克服这些限制，我们提出了一种在宇称-时间（PT）对称中具有横向对齐中性元件的WPT系统，该系统可以通过中性元件的数量来扩大操作区域。与传统的多输入单输出WPT相比，系统复杂度的维度从×大幅降低到，因为中性幅度仅由耦合电容器控制。工作频率会自动调整到PT对称系统的实特征值，以实现高电压增益和效率，从而使系统具有鲁棒性。通过耦合模理论计算得到的系统性能，在刚性和柔性类型的接收器上进行了实验验证，证实了其在工业和生物医学电子领域的潜力。
