Fault detection in fivephase permanent magnet synchronous machine affected by inter-turn short circuits

What is it about?

Three phase synchronous machines are widely used in industrial systems. The development of these systems conducts to new applications that need more power. Therefore, three phases become insufficient and the use of machines with more phases, called multi-phase machines, is very necessary. These multiphase machines are affected by several defects. In this study, we propose a faulty model of a five-phase permanent magnet synchronous machine (FPPMSM) in the presence of inter-turns short-circuit defect using the method of the Coupled Magnetic Circuit (CMC). The effects of the fault are observed through the investigation of electrical and mechanical quantities obtained from the resolution of the differential equation with the Rung Kutta-4 method. In order to verify the model, a spectral analysis of the stator currents is carried out to detect the frequency signature of the inter-turns short-circuit fault.

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