![]() One area where power electronics is widely used today is the industrial applications related to machine-static power converter associations, particularly the industrial variable speed AC drives. It was only after the development of special electronic power components of higher reliability and more limited tolerance that new techniques could be envisaged, thus creating a new branch of electronics called power electronics. This reliability was insufficient to meet the high demands of new applications in the industrial field. The possibilities of application were limited by the unreliability of the electronic elements available at that time. The applications of electronics were for a long time limited to the technique of high frequencies. 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. 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 comparison study focuses on the time detection, the localization ability and the hardware aspect. 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. 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 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 variety of different techniques have been applied to detect open-circuit faults in power converters. 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. ![]()
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