海洋浮标感应耦合电能传输系统频率分裂特性及最大功率点分析

为探究感应耦合电能传输（ICPT）系统中的频率偏移是否会对系统的最大输出功率产生影响，综合考虑线圈谐振频率、耦合系数，通过建立互感模型对基于海洋浮标的ICPT系统的频率分裂现象进行分析，选择输出功率作为重点研究对象，推导出在ICPT系统中输出功率与耦合系数，工作频率之间的关系表达式. 通过数值分析研究耦合系数、工作频率对频率分裂影响的一般化关系，并通过实验验证其结论. 结果表明：对线圈之间的耦合系数进行匹配，可以避免系统发生频率分裂，且在固有谐振频率处输出功率和效率达到最大值；若系统耦合系数固定，通过调整工作频率，可以使系统传输性能达到最优.

Frequency splitting characteristics and maximum power point analysis of ICPT system with ocean buoys

The frequency splitting phenomenon of inductive coupled power transmission (ICPT) system based on ocean buoys was analyzed, aiming at the problem that the maximum output power of the ICPT system was affected by the inductive coupling frequency offset. The mutual inductance model of ICPT system was established. Considering the coil resonance frequency and the coupling coefficient, the output power was taken as the key research object. And the relation expression between the output power and the coupling coefficient, the operating frequency in the ICPT system was presented. Meanwhile, the generalized influence of coupling coefficients and operating frequency was studied by numerical analysis. It is concluded that matching the coupling coefficients between the coils can avoid frequency splitting; the power and efficiency reach the maximum at the resonant frequency. In addition, if the system coupling coefficient is fixed, the system transmission performance can be optimal by adjusting the. operating frequency.