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 N . Compared to the conventional multiple-input–single-output WPT, the dimension of system complexity is substantially reduced from R × C N to R N+ 1 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.

中文翻译：

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在奇偶校验时间对称中使用异质耦合和可翻转中性点的大范围稳健无线电力传输

最近，固定式无线电力传输 (WPT) 已在商业设备中广泛采用。然而，当前的 WPT 配置受限于其操作区域并且容易受到操作条件变化的影响，阻碍了其在动态环境中的应用。为了克服这些限制，我们提出了一种在奇偶时间（PT）对称中具有横向对齐的中性元素的 WPT 系统，它可以通过中性元素的数量来扩大操作区域ñ. 与传统的多输入单输出 WPT 相比，系统复杂度的维度从R×Cñ 至R N+1因为中性幅值仅由耦合电容器控制。工作频率自动调整为 PT 对称系统的真实特征值，以实现高电压增益和效率，使系统具有鲁棒性。通过耦合模式理论计算的系统性能通过刚性和柔性类型的接收器进行了实验验证，证实了其在工业和生物医学电子学中的潜力。