In inductive power transfer systems, a transmitter array can maintain high power transfer efficiency (PTE), despite lateral misalignment between the transmitter and receiver. However, a control method for reducing magnetic field leakage in this situation has not been found. Therefore, a novel theory of controlling the transmitter array is necessary for electromagnetic compatibility and user safety. In this study, we optimize the input currents at the transmitter array and the load impedance at the receiver to maximize PTE under the cancellation condition of the magnetic field leakage. Simulations show that the proposed method reduces magnetic field leakage by more than 10 and 38 dB, with and without ferrite plates, respectively, compared with existing PTE maximization methods, even when there is a lateral misalignment between the transmitter and receiver. Additionally, experiments using coils having ferrite plates show that the proposed method reduces magnetic field leakage by more than 6.75 dB. The decrease in PTE is within 4.17 %, which compares favorably with existing methods.

中文翻译：

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感应电力传输系统漏磁场的消除条件


在感应电力传输系统中，尽管发射器和接收器之间存在横向未对准，发射器阵列仍可以保持高电力传输效率（PTE）。然而，尚未找到用于减少这种情况下的磁场泄漏的控制方法。因此，为了电磁兼容性和用户安全，需要一种控制发射机阵列的新颖理论。在本研究中，我们优化了发射器阵列的输入电流和接收器的负载阻抗，以在消除磁场泄漏的条件下最大化 PTE。仿真表明，与现有的 PTE 最大化方法相比，即使在发射器和接收器之间存在横向未对准的情况下，无论有铁氧体板还是无铁氧体板，所提出的方法都可以分别将磁场泄漏减少 10 dB 以上和 38 dB 以上。此外，使用具有铁氧体板的线圈的实验表明，所提出的方法将磁场泄漏减少了 6.75 dB 以上。 PTE 的下降幅度在 4.17% 以内，与现有方法相比毫不逊色。