A Comparative Study on Some Fault Diagnosis Techniques in Three-Phase Inverter Fed Induction Motors

Abstract

The growing importance of power conversion systems and their dependency on the performance and reliability of static converters has motivated extensive research efforts in this field. A variety of different techniques have been applied to detect open-circuit faults in power converters. The present chapter is focusing on the techniques of detection and localization of open-circuit faults in a three phase voltage source inverter fed induction motor. A comparative study is carried out between different detection techniques: the Park current vectors and its enhancement by using the polar coordinates, the mean value of the currents, the stator current spectrum analysis and the measurement of the current drop. The aim of this comparison is to investigate the relative strengths and weaknesses of the different techniques and evaluate the performance of each detection technique studied. The comparison study focuses on the time detection, the localization ability and the hardware aspect. To validate these techniques, an experimental setup is developed in our diagnostic group laboratory which consists of a two-level voltage source inverter controlled by a DSPACE-1104, Card to generate the PWM vector control of the induction motor. The obtained simulation and experimental results illustrate well the detection feasibility of each technique as well as the benefits and merits of the performed comparative study.

A Sensor-Based System for Fault Detection and Prediction for EV Multi-Level Converters

“…However, the failure of electronic components also strongly affects the reliability of the entire system. The most frequent failures of the power components of the inverter are short circuit-continuity or circuit interruption-open circuit failures [5][6][7][8]. In most cases, short-circuit faults cause overcurrent conditions in the converters, which can be detected with standard sensor systems mounted on the output of the inverters.…”

New Approach in the Fault Tolerant Control of Three-Phase Inverter Fed Induction Motor

“…Once the fault is detected and located, corrective action must be taken to mitigate the effects of the fault [9][10][11]. Many inverter architectures based on some hardware redundancy have been suggested to add reconfigurability to the system [12,13]. Several studies have invested in this subject.…”

A Combined RMS-MEAN Value Approach for an Inverter Open-Circuit Fault Detection

“…It is therefore obvious that the investment in the field of detection of faults seems an inevitable solution. Several researchers have carried out their investigation in relation to the field of faults detection and localization in static converters and more particularly those related to three-phase power inverters [9,10].…”

“…The Park's current vectors approach has been improved by employing the polar coordinates to calculate the exact angles of each IGBT switch [16]. A review of some detection techniques mentioned above are discussed and compared in [8,10]. Spectral analysis techniques are preferred by other researchers.…”