Design And Study Of Multi-winding Magnetic Field Generator

With the rapid development of the science and technology, the exploration ofscience has been expanding from the normal conditions to the extreme conditions.These extreme conditions include strong magnetic field, ultra-low temperature,high pressure, strong laser and so on. Under the extreme conditions, many newphysical states, new phenomena and new laws have been discovered, which havenot been found under normal conditions. The strong magnetic field provides aspecial environment for scientific research, in which the structure of matter,physical properties and the transformation process may be different from normalones. The strong magnetic field provides a new horizon for crossover study ofmagnetic and other disciplines.The study is based on the project of the self-made instruments and devices ofHefei University of Technology—Multi-winding magnetic field generator, which isdesigned to provide a strong magnetic field environment for the study andapplication of magnetic materials, bio-magnetic effect, feature films andsemiconductor physics under strong magnetic field.This study focuses on the design of multi-winding magnetic field generator,and analyzes the design of the electromagnet. In order to avoid the deficiencies ofthe existing method, a multi-winding magnetic field generator is designed andoptimized by using the Maxwell finite element analysis softwareFirstly, by formula computing, the basic structural parameters of magneticfield generator are confirmed. The Maxwell finite element analytical software wasused to analyze the influence of magnet-yoke and polar face form on magnetic field,and structure of magnetic field generator was optimized on this basis. Then, theparametric model of multi-winding magnetic field generator was established basedon the Maxwell software, and the static performance simulation was done. Theresults involve magnetic lines and magnetic flux density distribution, relationsbetween magnetic flux density and working air gap and between magnetic fluxdensity and working electric current. Finally, after the making of the electromagnetaccording to the design proposal, a series of valid data was obtained by the test onthe constructed experimental platform. By comparing the actual data and the emulated data, the correctness of the method was proved. The causes of error wereanalyzed, which provided an academic and practical guidance for the design anddevelopment of the electromagnet.Through the Maxwell finite element analysis, the software’s analoguesimulation, electromagnetic field parameter and its field distribution underdifferent condition can be obtained precisely and directly. Compared withtraditional computation methods, this method can reduce the design period and thedesign costs, which proves its reference value.