A new theory of development of force and torque in variable reluctance stepping motors

Abstract

This paper presents a new theory of force and torque production in doubly slotted magnetic structures encountered in variable reluctance machines. This general theory is applicable to any point on the B-H curve of iron. It is capable of explaining all known phenomena including those for which satisfactory explanations are not available in existing theories. It enables optimization of all dimensions defining the rotor geometry to be carried out. It thus lays a sound theoretical basis for designing variable reluctance machines.