Original scientific paper
https://doi.org/10.7305/automatika.2016.10.1663
Application of Open-Circuit IGBT Faults Diagnostic Method in DTC-SVM Induction Motor Drive
Piotr Sobanski
; Department of Electrical Machines, Drives and Measurements, Faculty of Electrical Engineering, Wroclaw University of Science and Technology, ul. Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
Teresa Orlowska-Kowalska
; Department of Electrical Machines, Drives and Measurements, Faculty of Electrical Engineering, Wroclaw University of Science and Technology, ul. Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
Abstract
In this paper a simple diagnostic method of a single IGBT open-circuit fault is presented, it is dedicated for three-phase two-level voltage-inverter-fed vector controlled induction motor drive systems. A failure diagnosis is based on a transient analysis of a reference voltage space vector in stationary coordinates, without additional sensors. The diagnostic algorithm ensures detection and localization of single IGBT failures in time shorter than one period of a stator current fundamental harmonic, without regard to a drive operation point. The presented scheme of the diagnostic system can be easily applicable in the electric drives that use voltage space vector modulation algorithms. The main achievement of the research, whose results have been presented in this paper, is an experimental validation of the analyzed IGBT faults diagnosis technique in the drive with the Direct Torque Control algorithm.
Keywords
Induction motor drive; condition monitoring; open-circuit fault; direct torque control; diagnostic technique
Hrčak ID:
179433
URI
Publication date:
25.1.2017.
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