Abstract：Dual-band wireless power transfer (WPT) system can provide two channels with different frequencies for power transfer and signal transmission. According to the impedance-frequency characteristic of the single-band WPT coil, a design method of dual-band WPT coil was proposed. The dual-band WPT system via magnetic resonant coupling (MRC) was designed, and the notch circuit was used to separate signal wave and power wave at receiving side. Partial element equivalent circuits (PEECs) were built for the dual-band system. Afterward, impedance characteristic of the dual-band coil, power transfer capacity and system efficiency were calculated. It is shown that the system can synchronously transfer signal without affecting the power transmission efficiency. The well consistency between experimental results and the theoretical analysis shows the effectiveness of the design method.
李琳, 李然. 双频段磁耦合谐振式无线电能传输系统特性分析及实验验证[J]. 电工技术学报, 2017, 32(18): 90-97.
Li Lin, Li Ran. Analysis and Experimental Verification of Dual-Band Wireless Power Transfer System Via Magnetic Resonant Coupling. Transactions of China Electrotechnical Society, 2017, 32(18): 90-97.
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2017, Vol. 32 
