Influence of Machine Geometry to the PMSM Mathematical Model

Abstract

The paper is focused on the evaluation of the time dependency of the equivalent circuit (EC) parameters. In the machine control theory, these parameters are supposed to be constant. But especially in the permanent magnet synchronous machines (PMSM) with fractional slot concentrated windings, time dependency of EC parameters can be very significant. Therefore the mathematical model of the generator operation is created including the time dependency of EC parameters.