Technological Inaccuracy in the Performance of Small Electrical Machines

Abstract

In the previous chapters we assumed an ideal mechanical accuracy in machine geometry in terms of machining and assembling of basic components. However in practical manufacturing of electro-magnetic systems, technological inaccuracies in mechanical performance, as well as inhomogeneities in the magnetic and conductive materials, are unavoidable. Mechanical inaccuracy is more of an influence for small electro-machines in which mechanical tolerances and assembly errors are comparable with nominal system dimensions. In this chapter we establish analytically a computational tool to compute the influence of several basic mechanical technological irregularities on the performance accuracy of the basic types of electrical machines discussed in previous chapters.