Modelling short- and open-circuit faults in permanent magnet synchronous machines using Modelica

Abstract

Electrical machine models are indispensable for describing and predicting the machine behaviour in several operating conditions. Modelling fault conditions are an attractive research area, since fault simulations allow to figure the behaviour of the electric drive and prevent damages to its components. In this study, winding failures in permanent magnet synchronous machines (PMSMs) are considered. In particular, short-circuits and open-circuits failures have been taken into account via two simple PMSM models. These models have been created using Modelica as modelling language. Feasibility of the proposed models is investigated in simulation (using Dymola environment) under the following fault conditions: single-phase open-circuit, single- and three-phase short-circuits. Moreover, models validation has been carried out through experimental tests, injecting windings failures into a fault-tolerant PMSM.