Abstract:Based on the multi-physics field coupling analysis of electromagnetic field,structural field and acoustic field, a predictive study of the electromagnetic vibroacoustic laws of high-temperature superconducting dual-stator generator (HTSDSG) with stationary seal is carried out. According to the characteristics of stator tooth saturation in HTS-DSG, the method of combining equivalent air gap length and dynamic magnetic permeability is used to analyze and calculate the magnetic flux densities of the inner and outer air gaps in the saturated state of HTS-DSG respectively. Meanwhile, the correctness of the theoretical method is verified by the simulation and experiment. Aiming at the special structure of the split cooling Dewar in the superconducting generator, the vibration stress analysis of the Dewar at different positions is carried out, and the vibration laws of the Dewar at different positions is obtained. The maximum tensile strength is far greater than the vibration stress, that is, under the normal operation state of the motor, the superconducting coil will not fail due to the vibration of the whole machine. Finally, the electromagnetic force is coupled to the HTS-DSG sound field finite element model, and the electromagnetic vibration and noise laws of HTS-DSG are predicted by using multi-physics field coupling analysis.