Performance evaluation of DTC-SVM permanent magnet synchronous motor drives under inverter fault conditions

This paper presents a performance analysis of a permanent magnet synchronous motor in a direct torque controlled drive under different faulty operating conditions. Considering the voltage source inverter, single power switch open-circuit faults and single phase open-circuit faults are introduced and their effects are investigated trough the analysis of some key parameters such as motor efficiency, power factor, electromagnetic torque and currents RMS and harmonic distortion values. Simulation results under these faulty operating conditions are presented, as well as results under healthy operating conditions, with the objective to establish a reference for comparison.