![]() ![]() The reason is air has high reluctance as compared to the reluctance of ferromagnetic material. No magnetic flux passes through the air.Whenever a ferromagnetic material is placed under the influence of the magnetic field, then the magnetic field lines completely pass through the material.The ferromagnetic material has the property of least reluctance. We demonstrate our approach on an experimentally verified model of a fully pitched switched reluctance motor, for which we find the globally optimal waveforms. A variable reluctance stepper motor comprises a stator having a plurality of evenly spaced salient poles (ll) carrying windings (l3) such that every other pole of the same phase is of opposite polarity and an armature having poles (l2) such that the spacing between alternate armature poles is equal to the spacing between adjacent stator poles of the same phase and opposite polarity (llA-l,llA-2).The rotor windings are made of ferromagnetic material.Since the main role of stator poles is to produce a magnetic field, they are made of good magnetic material.In variable reluctance stepper motor construction, the stator poles are made of silicon steel.The stator poles are excited with a three-phase or single-phase supply and the rotor is either made of permanent magnets or excited with a single-phase supply to obtain the rotor magnetic field.It works on the principle of reluctance, according to which magnetic flux always flows through a minimum reluctance path.A variable reluctance stepper motor is an electromechanical energy conversion device that converts electrical energy to mechanical energy. ![]()
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