【摘要】 针对由于频率分裂现象导致无线电能传输系统传输效率降低的问题，采用非线性谐振拓扑替代传统线性谐振拓扑抑制频率分裂进行了研究。首先通过A参数矩阵法得出了求解高阶系统传输效率公式理论方法，并推导了非线性传输系统的效率公式；分析了非线性谐振传输系统抑制频率分裂现象的原理，在系统产生频率分裂现象的情况下将非线性电感并入次级线圈，可以改善系统的传输特性。并通过仿真测试频率分裂现象对于非线性传输系统的影响。结果表明：在相同频率条件下，非线性传输系统可以推迟传输系统临界耦合状态的出现，且对抑制频率分裂现象具有明显的效果。更多还原

【Abstract】 In order to suppress the frequency splitting phenomenon of the wireless power transmission system, a Non-linear wireless power transmission system was used to solve the described issue. This method incorporated a nonlinear inductor into the secondary coil and used the saturation characteristics of the nonlinear inductor to affect the system transmission efficiency. The equation for the transmission efficiency of nonlinear systems was derived, and the principle of the method was described. The method was simulated and experimented, and the correctness of the simulation results was verified by experiments, the results show that the nonlinear transmission system has an obvious effect in limiting the frequency splitting phenomenon.更多还原