Abstract
Inter turn short fault models of permanent magnet synchronous motors (PMSM) having series and parallel winding connection are proposed using the deformed flux model. The deformed flux model includes not only the fault winding flux information but also the inductance variation by cross flux linkage effect depending on the same phase winding distribution. The series winding PMSM model has forth order dynamics by adding the fault winding dynamics into the three phase winding dynamics. For the parallel winding PMSM model, one dynamics is added to describe the different current distribution by the parallel connection of the fault winding and the healthy winding. With the deformed flux model and the positive sequence current assumption, the proposed model is derived in the positive and negative sequence synchronous reference frame (SRF). The finite elements method (FEM) simulation is applied to validate the proposed PMSM model with inter turn short fault.
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