Title: DIAGNOSIS OF ROTATING ELECTRICAL MACHINES BY MAGNETIC FIELD ANALYSIS: PRINCIPLES AND CHALLENGES
Authors: Remus PUSCA, Younes AZZOUG, Raphael ROMARY
Affiliation: Université d’Artois, UR 4025, Laboratoire Systèmes Electrotechniques et Environnement (LSEE), Béthune, France
Abstract: The reliability and performance of electrical machines are crucial aspects for many industrial applications. Early fault detection is essential to prevent unexpected failures and optimize maintenance plans. To address these concerns, magnetic field diagnosis is a promising technology as it offers numerous advantages, such as the ability to monitor machines in real time, easy integration into existing monitoring and maintenance infrastructures, and the ability to identify faults at an early level, thus reducing downtime and maintenance costs.
This lecture focuses on the use of stray magnetic fields as a non-invasive method for diagnosing rotating electrical machines. It highlights the principle of the method, the challenges for its application, and the methodological improvements for data analysis that we have developed in recent years. We will discuss the fundamental principles of magnetic field diagnosis, emphasizing how
field variations can reveal internal faults such as inter-turn short circuits or eccentricity. Through case studies and experimental results, we will demonstrate the effectiveness of this method in identifying different types of faults in various configurations of electrical machines. The integration of machine learning and artificial intelligence algorithms is a key perspective for improving this technology and integrating it into broader predictive maintenance systems.
Title: ELECTRONIC COMPONENT QUALIFICATION FOR THE AUTOMOTIVE INDUSTRY
Author: Nicolae GROSS
Affiliation: Continental Automotive Systems, Sibiu, Romania
Abstract: The electrical and electronic systems in modern vehicles are complex and employ an increasing number of electronic modules, sensors, actuators, and their related interfaces. The increased complexity also leads to a higher risk of failure, both random and systematic defects. One of the measures to improve safety, respectively to reduce the risk of failure, is the use of electronic components qualified for use in the automotive harsh environment. In this regard, the AEC-Qxxx documents have been established by the AEC (Automotive Electronic Council) Technical Committee. These documents define the electronic component qualification requirements, to be used by the component manufacturers. Also, they include various guidelines and test methods.
In this lecture we will go together through the main phases of the qualification of electronic components for the automotive industry – document structures per categories – integrated circuits, discrete semiconductors, optoelectronics, sensors, and passive components. For each component type, the corresponding AEC-Qxxx document defines a set of failure mechanism based stress tests, and provides the qualification requirements.
