Introduction to Electromagnetic Compatibility

This course covers the fundamental concepts of Electromagnetic Compatibility (EMC) and Electromagnetic Interference (EMI). It begins with an introduction to EMC, a state where electronic systems can function without causing or experiencing electromagnetic interference. The course uses real-world examples, such as the interference caused by a vacuum cleaner motor on a TV screen, to illustrate the concept of EMC. The course then delves into the sources of EMI and EMC, including common transients, EMC units, and the concept of common mode and differential mode currents and voltages. It explains how electromagnetic energy can be produced by various sources such as mobile phones, radio transmitters, and natural phenomena like lightning. The course also discusses the impact of switching events and electronic discharge on EMI and EMC, the concept of electrical dimensions, the use of decibels in EMC studies, and the significance of differential and common mode signals in EMC. This course has been developed by Prof. Daniel Mansson and Prof. Rajeev Thottappillil from KTH Royal Institute of Technology, Sweden for NPTEL. It is now accessible through Ansys Innovation Space courtesy of the partnership between Ansys and NPTEL, under the CC BY-SA license. For more details, visit https://nptel.ac.in/courses/108106138.