Amirkabir University of Technology AUT Journal of Electrical Engineering 2588-2910 49 2 2017 12 01 Investigating Direct Torque Control of Six-Phase Induction Machines Under Open Phase Fault Conditions 151 160 1974 10.22060/eej.2017.11535.4974 EN R. Kianinezhad Department of Electrical Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran. A. Hajary Department of Electrical Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran. Journal Article 2016 04 11 This paper presents analysis and evaluation of classical direct torque control<br />(DTC), for controlling a symmetrical six phase induction motor (SPIM) under open phase<br />fault conditions. The machine has two three-phase windings spatially shifted by 60 electrical<br />degrees. The strategy of the proposed method consists of choosing the switching modes<br />according to the configuration of living phases in such a way that it generates vectors that<br />have higher amplitude in α-β plane while their projections on z axis give zero or near zero<br />amplitude vectors. The goal is reducing parasitic currents and torque ripples of SPIM under<br />faulty mode. Based on the theoretical analysis, it will be shown that in the open phase fault<br />conditions, the only non-pulsating operation is obtained by opening the fault three-phase<br />winding. Experimental test results are provided o support theoretical analysis in open phase<br />fault conditions for SPIM. https://eej.aut.ac.ir/article_1974_3d863b367aa379f71c7afc0c9cdca41d.pdf