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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Wireless Power Transmission With Self-Regulated Output Voltage for Biomedical Implant
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Wireless Power Transmission With Self-Regulated Output Voltage for Biomedical Implant

机译：具有自调节输出电压的生物医学植入物的无线电力传输

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This paper presents a wireless power transfer (WPT) system for powering implantable biomedical devices; the system is configured to achieve high efficiency even with CMOS switches and printed-circuit-board pattern coils and to maintain constant output voltage against coupling and loading variations without any additional blocks. It is shown that the parallel-resonant transmitter (TX) and receiver (RX) topology is advantageous for high efficiency even with lossy but compact components. In addition, the output voltage of the topology is insensitive to coupling and/or loading variations if the operating frequency is automatically adjusted according to coupling variations. A parallel-resonant class-D oscillator TX is developed to track the optimum operating frequency for the constant output voltage. The operating distance for the constant output voltage is also extended using a novel resonator structure, which contains two resonating coils. These proposed schemes allow a compact, efficient, and robust wireless power system. Maximum power of 174 mW can be transmitted with 63% overall efficiency.
机译：本文提出了一种用于为可植入生物医学设备供电的无线功率传输（WPT）系统。该系统配置为即使使用CMOS开关和印刷电路板图案线圈也能实现高效率，并保持恒定的输出电压以防止耦合和负载变化，而无需任何其他模块。结果表明，即使在有损但紧凑的组件中，并联谐振发射机（TX）和接收机（RX）拓扑也有利于高效率。另外，如果根据耦合变化自动调节工作频率，则拓扑的输出电压对耦合和/或负载变化不敏感。开发了并联谐振D类振荡器TX来跟踪恒定输出电压的最佳工作频率。使用新型谐振器结构（包含两个谐振线圈）也可以延长恒定输出电压的工作距离。这些提出的方案允许紧凑，有效和鲁棒的无线电力系统。可以传输174 mW的最大功率，总效率为63％。

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