Research On SSP Compensation Topology Of Non-contact Excitation Source

The excitation system of the electromagnetic speed-regulating motor belongs to the power supply to the rotating part.Therefore,the traditional electric brush and slip ring are replaced by the non-contact radio energy transmission.This exciting power supply solves the disadvantages of traditional power supply mode.Based on the working principle of non-contact power transmission system,this paper designs reasonable reactive power compensation to improve the power density and improve the efficiency of transformation.Due to the voltage gain of con-tactless power transmission system along with the change of loosely coupled transformer parameters,operation frequency,join after compensation belongs to high order system,easy occurrence frequency bifurcation phenomenon,and the control of the system is also not convenient.Therefore,this paper USES the former boost circuit cascade full bridge resonance circuit.The front-level circuit realizes the function of voltage regulation,and the back-level circuit realizes the demand for power supply to the rotary part.First of all,this paper introduces the working principle of electromagnetic speed-regulating motor and proposes the idea of non-contact excitation power supply.The principle of non-contact power supply is introduced.The circuit topology of the boost cascade resonant converter is proposed to solve the problem of load effect and low transmission efficiency of non-contact power supply voltage gain.Secondly,the loose coupling transformer is modeled and analyzed.T-type equivalent circuit and mutual inductance equivalent circuit are respectively compensated analysis and impedance analysis.Through MATLAB simulation,the voltage gain of various compensation methods(PSSS compensation,PSSP compensation,PPSS compensation,PPSP compensation,PSSSP compensation)and the efficiency of the system were analyzed and compared.Finally,the compensation structure of the system is determined.Finally,the PSSSP compensation topology is simulated and verified by saber,and the voltage gain stability of the non-contact power transmission circuit is realized,which is independent of the load and improves the transmission efficiency of the system.Simulation analysis and experiment verify the correctness of theoretical analysis.