Electromagnetic Compatibility (EMC) Course Notes

Abstract

Learning objectives The main target for this subject is to provide to the students a global vision of all aspects of the electromagnetic compatibility The objectives of an Electromagnetic Compatibility (EMC) course are to train engineers and technicians capable of designing electronic systems that function correctly in their environment without interfering with other equipment. This electromagnetic compatibility (EMC) course is intended for first-year Master's students in electrical engineering and embedded systems electronics. The course notes are structured into four chapters. Currently, the study of electromagnetic compatibility (EMC) in electrical and electronic systems has become of paramount importance. Indeed, all electrical and electronic systems are subject to disturbances originating from stray energy that unintentionally crosses their boundaries; this stray energy is called electromagnetic interference. Electromagnetic interference is becoming increasingly problematic for electrical and/or electronic systems. This interference can also be a source of disruption for neighboring systems or other users of the same system. This gives rise to a discipline called electromagnetic compatibility (EMC), that is, the art of making sensitive electrical systems work in a disturbed electromagnetic environment, but also of reducing the disturbances generated by electrical systems from their design stage. The objective of this course is to explain the basics of electromagnetic compatibility (EMC), and its importance for businesses. An electronic system that functions compatibly with other electronic systems without producing or being susceptible to electromagnetic interference is said to be electromagnetically compatible with its environment. The objective of this course is to recognize and understand Electromagnetic Compatibility (EMC) challenges. EMC challenges occur across numerous critical application areas. Examples of non-compliance include mobile telephones interfering with pacemakers or aircraft avionics, broadcast stations disrupting automotive engine management systems, or switching noise in power converters affecting sensitive control circuits. Key application domains where EMC is essential include Power Electronics, Electrical Transportation (automotive, aviation and maritime), Telecommunication and integrated circuit design. Knowledge of unwanted electromagnetic phenomena, interferences, understand unwanted coupling and to be able to find possible interference mitigation measures. Where understanding the connection between fundamental EM phenomena and real physical situation is the main objective. In this course, you will learn to recognize non-ideal behaviors in electronic components and explore phenomena, shielding strategies, and methods to control conducted EMI. Additionally, you'll gain insights into minimizing crosstalk effects, reducing radiated EMI emissions, and enhancing system immunity. CM and DM EMI issues, along with the role of Transfer Impedance in EMC design, will also be covered. This course provides a comprehensive foundation for navigating the intricacies of EMC in electronic design. Electromagnetic compatibility (EMC) is a discipline that aims to study the problems of electromagnetic coexistence. Its purpose is to:  To study unintentional energy transfers between electrical and/or electronic systems,  To develop processes to limit the electromagnetic interference emitted and thereby comply with current regulations,  To develop processes to increase the immunity of systems to parasites. Electromagnetic compatibility (EMC) is the science that enables the correct functioning of an electrical or electronic system in the presence of other systems in its environment. The work was therefore carried out in two parts:  The first part defines the principle of EMC and its legal framework. A brief review of electronics then helps to understand the difference between electric, magnetic, and electromagnetic fields. We will then be able to understand what electromagnetic interference is and see some methods for verifying the performance of equipment in terms of EMC.  The last part briefly presents the techniques that can be implemented to protect the equipment.