Analysis of the effect of asymmetrical phase parameters in a 3-phase permanent magnet synchronous motor

The paper describes the model of a permanent magnet synchronous motor with non-salient rotor, which is used for simulation the effect of asymmetrical phase parameters on the quasi-steady state torque waveform. An example of phase asymmetry has been studied in (i) the open-loop operating mode, i.e. without position-feedback phase commutation, and (ii) the vector-control mode.