Diagnosis of stator winding short circuit faults in a direct torque controlled interior permanent magnet synchronous motor

Abstract

Absract--Direct torque control (DTC) is a powerful control method for interior permanent magnet synchronous motor (IPMSM), it provides a systematic solution in improving the operation characteristics of not only the motor but also the voltage source inverter(VSI). Stator winding faults due to short circuited turns are one of the most electrical faults in DTC-IPMSM drive system. The main problem with fault is connected with their destructive character and a tendency to a rapid transition. In early stage of this failure, the motor may still operate. This paper presents a direct torque control for IPMSM motor under stator winding faults, in order to ensure system service continuity. As a very fast diagnosis could terminate the damage range in the stator winding, a proposed method based on the current space pattern recognition will be investigated.Comparisons between simulation and experimental results will be performed to evaluate the effectiveness of the proposed approach.Keywords--Direct torque control, interior permanent magnet synchronous motor, stator winding faults, fault detection and diagnosis, pattern recognition.

Modeling and Analysis of PMSMs under Inter Turn Short Faults

“…To implement the proposed model, (12), (14), (15), and (16) , the transient element vanishes and the proposed model simulation results are almost identical to the FEM simulation results. Fig.…”

“…In [10][11][12][13][14][15][16][17], the turn short fault models of the PMSM have been presented. They used the winding function [10,15] or simplified model [11,12,13,16,17] to obtain inductance value with turn short fault. But, they are inaccurate for the multi pole motor since the flux couplings between the turn faulted winding and healthy windings of the same phase are ignored.…”

Stator Winding Fault Diagnosis of Permanent Magnet Synchronous Motor-Based DTC-SVM Dedicated to Electric Vehicle Applications

“…An inter-turn fault represents an insulation failure between two windings in the same phase of the stator [23].…”

“…So the fault diagnosis about the PMSM problems is essential because the PMSM has a huge influence on the safety and economic efficiency of the vehicles. The stator winding fault is a common fault that has interested researchers for many years [21][22][23][24][25][26][27]. It is resulting from the degradation of the inter-turn interphase and main isolation of the motor winding.…”

Modeling and Diagnostic of Permanent Magnet Synchronous Machine under Insulation Failure Condition

“…In recent years, Permanent Magnet Synchronous Motors (PMSM) are one of most important electric machines widely used in industries such as traction, automobiles, robotics and aerospace. Besides, they can be used in electric vehicles and ship propulsion systems due to the inherent important advantages of high power density, high efficiency, small weight, high reliability and easy control of external torque by stator's current control [1][2][3][4].…”