Winding condition monitoring scheme for a permanent magnet machine using high-frequency injection

Analysis of Vertical Strip Wound Fault-Tolerant Permanent Magnet Synchronous Machines

“…In the early studies [24][25][26][27][28][29][30], the dynamic behavior of RCW wound PMSM under healthy, faulty and post-fault control operating conditions have been investigated in both FE coupled dynamic models [31] and lumped-parameter dynamic model based on parameters calculated with FE [28]. However, in these early studies the influence of the location and geometry of the faulty winding on the fault behavior are not considered.…”

Stator Interturn Fault Detection in Permanent-Magnet Machines Using PWM Ripple Current Measurement

“…Detection schemes [13], [14] are broadly divided into fundamental quantity based [15]- [21] detection, high frequency based [22]- [24] detection and motor current signature analysis (MCSA) [25]- [27]. Most of the methods [22] is improved further by using lookup table based calibration of the dq high frequency signal to reduce effect of magnetic saliency induced by load variation from affecting the detection.…”

A Fault Severity Index for Stator Winding Faults Detection in Vector Controlled PM Synchronous Motor

“…The condition monitoring of PMSM drives has become a critical problem for various industrial applications because a sudden drive failure can cause serious damage and economical losses [1][2][3]. The majority of the stator winding fault is caused by the breakdown of turn-to-turn insulation as a result of the voltage, current or thermal stress acted on the stator winding.…”

“…This fault index is easily obtained by comparing back-emf with the reference back-emf when the machine was healthy. In [2] an approach to detect abnormalities in the winding of a PM machine which uses the injection of HF voltages and the processing of the modulated HF currents is proposed. The difference between the measured saliency with respect to the expected saliency is used to derive an error saliency that can be used to quantify the severity of a fault and indicate the condition of the drive.…”