Magnetic Performance of Shearer Switched Reluctance Motors Drive

In order to realize the digitization of the shearer control system and master the magnetic performance of the shearer switched reluctance motors drive (SRD), the three-phase 12/8 switched reluctance motors (SRM) used on shearer was studied, and the distribution form of SRM magnetic field of the rotor different position angles (θ=0°, θ=8°, θ=12°, θ=16°, θ=22.5°) were analyzed basing on the finite element theory. The results indicate that: when the θ=0o, the magnetic flux density in the stator and rotor is lower, which is unsaturated state and the magnetic flux leakage is serious, and whether the self-induction magnetic leakage or the mutual inductance magnetic leakage is bigger; when the θ=8° and θ=12°, there is higher local saturation phenomenon on the magnetic pole tips; when the θ=16°, the local saturation phenomenon is relieved and the magnetic leakage is decreased; when the θ=22.5°, there is little local saturation phenomenon, and the magnetic flux leakage is very small, the self-induction magnetic leakage is nearly to zero, the mutual inductance magnetic leakage is negligible. But, there is no saturation phenomenon on the rotor yoke in any position of the rotor.