The Concept of Induction Motors Used as Generators

Abstract

The principal decision whether to use an induction or a synchronous generator for electricity generation depends on a large number of parameters. Not only the technical properties of the machines but also the systems into which the generators will supply energy have to be considered. Depending on whether the generating unit of a small hydropower plant covers the needs in electricity of a single estate or a small village, or whether it is linked to a larger national or regional grid, we may speak of stand-alone and parallel operation respectively. Obviously, the two modes of operation have different requirements on the generating unit (which generally comprises turbine, generator, governor and the electrical safety and control equipment).