Numerical simulation and experiment research of electromagnetic field of permanent magnet retarder

The electromagnetic field of permanent magnet retarder was calculated by using code ANSYS.Based on the results,the characteristics of electromagnetic induction of material zone and air gap were especially analyzed.Compared the results with the experimental data,it is showed that the error of calculated results is less than 8%.The characteristics of electromagnetic field and the working mechanism could be well understood by carefully analyzing the numerical results.This work is expected to provide technological support for application of permanent magnet retarder.