Circuit Theory of Reluctance Machines: Part II

The purpose of this paper is to establish formal d-q rotating real transformation equations for the synchronous operation of a class of reluctance machines provided with a dc exciting winding on the stator; and similar transformation equations for asynchronous operation of those machines with two orthogonal axes ¿, ßfixed on the stator or rotating along with the rotor. In synchronous operation the rotor is assumed to carry no current whereas in asynchronous operation, the stator field is considered absent and the salient rotor is assumed to carry an N-phase short-circuited cage winding. For simplicity the end ring circuit is not considered. The d-q transformations result in equations which singularly point out the two types of machines considered in Part I of the paper behaving in the fashion of either a cylindrical rotor synchronous machine in which the axis reactances are equal or as a salient pole synchronous machine in which the axis reactances are not equal.