Study On The Topology Of Multi-stage Repetitive Pulsed High Magnetic Field Power Supply Based On Energy Feedback

Repetitive pulsed high magnetic field,as one type of pulsed high magnetic field,is of research significance,with important application in the fields of neutron diffraction,terahertz radiation,guided magnetic field and so on.At present,the research direction of repetitive pulsed high magnetic field includes the cooling of magnet,the addition of energy and the stability of waveform.Research on repetitive pulse magnetic field can promote the development of high magnetic field technology.In this paper,the research status is discussed,then,with theoretical research,simulation analysis and other methods,the topology of repetitive pulsed high magnetic field with energy feedback and high precision output is carried out.Based on the existing research and analysis repetitive pulsed power supply system,a two-stage repetitive pulse power supply topology is proposed,in which respectively uses capacitor and battery combined power supply.Its working principle is analyzed and the circuit topology is simulated with the actual magnet parameters based on the existing experimental background.The feasibility of using the topology to realize the residual energy feedback of the magnet is validated.The topology of the three-stage pulsed strong magnetic field can be realized by high-precision flat-top pulse output,and the theoretical analysis and simulation are also conducted.The design process of hardware circuit of multi-stage repetitive pulse power supply system is introduced.Finally,the low power verification experiment is carried out on the hardware prototype,and the repetitive discharge experiment is carried out on the fictitious load.The feasibility of the proposed multi-stage repetitive pulse power supply topology is proved.In this paper,the topology of repetitive pulse power system using combined power supply with feasible energy feedback is proposed.With the further study of the repetitive pulsed high magnetic field,the topology discussed in this paper will be of great significance in the field.