Numerical Simulation of Air Gap Magnetic Field of Eddy-current Retarder

The magnetic field intensity of eddy current retarder air-gap is is one of important factors of influence braking effect, this paper constructs electrify magnetic solenoid, mathematical model and the air-gap magnetic field shape distribution in two cases of iron with magnetic yoke and without magnetic yoke is simulated by using Maxwell software according to the working principle of eddy-current retarder, the results indicate that the yokes play a magnetizing part and make magnetic distribute function again, it makes air-gap magnetic field distribution more uniform, but the magnetic field intensity of air-gap is more small.