Analysis of Flux Density Harmonic Spectrum of the Coaxial Magnetic Gear

The harmonic spectrum of the magnetic flux density is essential for torque interaction and efficiency of magnetic gears. In this paper a design of coaxial magnetic gear has been modeled in order to estimate the magnetic flux density harmonic spectrum of in the air-gaps, magnets, rotors and in the modulating steel segments. A time dependent Finite Element Method model of the coaxial magnetic gear has been implemented. The model simulations are carried out by Ansys-Maxwell package. The flux density harmonic spectrum depending on rotor's relative positions and rotational angle has been calculated and analysed. The harmonic spectrum is implemented by Matlab software.