| Capacitor charge power supply(CCPS)based on homopolar inductor alternator(HIA)plays an important role in the field of pulse power,especially in the repetitive frequency pulse power system.In this system,the HIA is used as the energy storage device for the capacitor,and the size design of its field winding have a significant effect on its volume,weight and charging performance.In order to evaluate the charging performance of the HIA,it is also necessary to build an accurate circuit simulation model.This paper carries out related research on the optimization design of the excitation winding of the HIA and the simulation model of the charging circuit.First,for the special threedimensional magnetic field structure of the HIA,a two-dimensional equivalent simulation model for the calculation of field winding parameters is proposed,and on this basis,the calculation methods of the field winding parameters of the HIA are analyzed.Secondly,in order to design the field winding,the changes of the field winding parameters with the size of the field winding when the field slot size is fixed or not are both analyzed,and the difference in field winding parameters between the internal field winding structure and the conventional external structure is also compared.Then,in order to build an accurate simulation model of the HIA-CCPS system,the influence of harmonic inductance of HIA on the mathematical model and the charging performance simulation results is analyzed,and on this basis,the influence of the size change of the field winding on the charging performance of the system is also analyzed.Finally,a prototype of the HIA is developed,and an experimental platform of the HIA-CCPS system is built.The no-load characteristics of the HIA and the capacitor charging performance are tested,and the results of simulation and experiment are compared and analyzed.According to the above research,this paper uses simulation methods to give the relationship between the system charging performance and the field winding size change,which provides a basis for the field winding size design,and through experimental methods,the conclusion is obtained that the simulation parameter optimization method based on the no-load voltage experimental waveform can play a better role in eliminating errors in the simulation of the charging process. |
