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针对LCL型感应耦合电能传输(inductive coupled power transfer，ICPT)系统在全谐振状态且处于轻载工作模式时，逆变器输出电流波形畸变和稳态输出功率较小问题，推导分析双 LCL 补偿 ICPT 系统双谐振点特性，并基于该特性，提出一种在轻载时将系统频率切换至次谐振点的系统工作模式。在有效避免输出电流波形畸变的同时，实现了系统在变负载条件下的最大功率输出。论文首先分析单 LCL网络特性，进而在双 LCL 补偿 ICPT 系统的基础上分析得到系统的两个谐振点，并且验证次谐振点可有效消除电流波形畸变的问题；接着，通过公式推导和软件仿真得到系统输出功率以及效率与负载和频率的关系；最后，通过仿真和实验，对双 LCL 补偿 ICPT 系统双谐振点工作特性、最大输出功率进行验证。“,”The LCL inductive coupled power transfer(ICPT) system will distort inverter output currents and decrease output power when the system is at the full resonant and light load mode. Due to the problem above, this paper presented a novel work mode that the system frequency is switched to the second resonant point in the dual LCL ICPT system under the condition of a light load. The proposed control system will avoid the current waveform distortion caused by the high harmonics and maximize output power with a varying load additionally. The paper firstly analyzed the LCL compensation circuit. Based on LCL analysis, the dual LCL network was characterized by another resonant point, which will avoid the current waveform distortion. Then, a mathematical model was established to describe relationship among the output power, load and frequency, which provides a reference to maximize output power with the frequency control method. Finally, the operating characteristics of the dual resonance points were verified by simulations and experiments.