METHOD OF MAGNETIC SOURCES APPLIED TO THE BASIC CONFIGURATION OF A ROTATING ELECTRICAL MACHINE

A method of magnetic field calculation in a cylindrical rotor electric al machine is outlined which considers the winding currents to be expl icit sources of the field, and the resulting magnetisation of the stat or and rotor core and shaft surfaces as implicit sources that are rela xed by a simple iterative process. The method is not intended to repla ce the finite element solutions that can better handle the details of the final configuration, but is advocated as a fast and useful tool in design synthesis, particularly where significant departures from conv entional proportions are required, as with, for example, the possible application of high temperature superconductors to rotating machines.