Characteristic analysis of frequency adaptive SS compensation system

By analyzing the resonance frequency and frequency bifurcation characteristics of the wireless power transmission SS compensation system, the characteristic frequencies of the system with stable and strong output robustness are obtained at the frequency bifurcation, and the input impedance does not change with the coupling coefficient at the low-frequency point and the high-frequency point. The system is decoupled from the coupling coefficient, and the system can follow this frequency under the parameter change through the circuit design, to realize the frequency adaptation and a mathematical model to determine the working frequency of the system is established. This shows that the circuit can be approximated as a closed-loop negative feedback system with nonlinear links. Through the method of describing the function to determine the stability frequency of the system, the self-sustaining oscillation frequency of the system during stable operation is solved, the relationship between it and the system parameters is obtained, and the stable operating frequency of the system under the difference of the natural oscillation frequency of the primary and secondary sides is obtained according to the model, and the effectiveness of the model is verified by experiments.