《全套电磁兼容资料6.》.pdf

IEEE-IAS Distinguished Lecture on Electromagnetic Compatibility in Industrial Equipment Giorgio Spiazzi - Paolo Tenti Department of Electronics Informatics University of Padova - ITALY C.R.E.I.Ven Veneto Consortium for Research in Industrial Electronics Padova - ITALY 1 Outline 1. Introduction to European Directive on EMC 2. High-frequency emission standards case studies 3. Origin of high-frequency pollution Design provisions to reduce EMI 4. Low-frequency emission standards: definition case studies 5. Origin of low-frequency pollution, definitions and basic compensation techniques 6. PFC structures 7. Example of application (PFC) 8. Immunity standards case studies 2 Fundamental Definitions Electromagnetic Compatibility The capability of electrical and electronic systems, equipment, and devices to operate in their intended electromagnetic environment within a defined margin of safety, at the specified level of performance, without suffering or causing unacceptable degradation as a result of electromagnetic interference 7 Fundamental Definitions Electromagnetic Interference (EMI) EMI is the process by which disturbing electromagnetic energy is transmitted from an electrical device to another via radiation and/or conducting paths In common terms, EMI refers particularly to RF signals, but it can occur in any frequency range starting from DC 8 Introduction Environmental electromagnetic pollution High-level electromagnetic