Two-axis magnetically coupled electric circuits for modeling of dual- stator induction machines under healthy and electric failures

Abstract EN

The aims of this paper is to present an accurate two-axis model for the analysis and diagnosis of dual-stator induction machine under healthy and windings electrical faults conditions.

While incorporating the stator and rotor windings functions, the developed model is based on the magnetically coupled electric circuits equations expressed in two different coordinate systems, and combined with the mechanical equations through the electromagnetic torque.

The obtained time-differential state equations system is implemented under Matlab environment and numerically solved using the fourth order Rung-Kutta method with variable step time corrected at each rotor displacement.

The computer simulation model can be used under unbalanced parameters or asymmetries operating conditions due to faults.

A dual stator induction machine is simulated under healthy operating, and faults due to stator electrical inter-turns short-circuits, or stator and rotor broken phases conditions.

The studied faults impact is analyzed while focusing on the currents, electromagnetic torque and rotor speed behaviors.