[PDF] Conducted Electromagnetic Interference Mitigation Using Active Filtering Method In Dc Dc Converters eBook

Author : Djilali Hamza
Publisher : LAP Lambert Academic Publishing
Page : 92 pages
File Size : 26,70 MB
Release : 2009
Category :
ISBN : 9783838305622

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It is known that DC/DC converters are the principle culprits in generating conducted Electromagnetic noise interference due to the switching action of their MOSFET. Passive filters have been a straightforward solution to overcome conducted EMI problems at the expense of space, weight and power losses. The objective of this work is to find an EMI filtering method which does not depend on the input parameters of the power supply such as current, voltage, and load impedance which has direct effect on the size and the weight of the product. An active EMI filtering method is sought to be the the candidate. This technique is based on the superposition of two signals with the same magnitude and opposite phase, traveling in the same direction on the same medium. However, the combination of the active and the passive filters shows a substantial attenuation of the conducted EMI emissions as compared to the passive filter only. Also, this combination contributes to an important reduction of the size and weight of the bulky passive filter. A case-study to demonstrate the performance and the effectiveness of the active EMI filter in DC/DC converters is presented in this book.

Author : Djilali Hamza
Publisher :
Page : 374 pages
File Size : 31,62 MB
Release : 2011
Category :
ISBN :

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Increasing power density of switch mode power supplies, by increasing their switching frequency has becoming a challenging obstacle for EMI mitigation. The passive EMI suppression technique has always been the primary solution to fulfill the EMC requirement in terms of conducted emission limits. However, the call for stringent power supplies specifications renders the passive techniques less desirable, due to their increasing size and power losses. In other words, the greater the power density of the converter, the bigger the passive filter. Other suppression techniques such as the spread spectrum frequency modulation (SSFM), and soft switching, prove to have less performance and much complex to implement. The active analog EMI filters provide the basic noise suppression technique; however, their performance is dramatically impeded at higher frequency. This solution requires an additional small size passive filter to complete the EMC spectrum for conducted emissions. Digital active filtering techniques offer advantages of flexibility, fewer external components and reduced overall size and power losses as compared to conventional passive filtering techniques. In this thesis DSP-based and FPGA-based EMI control techniques to mitigate the conducted emissions of switch mode power converters are proposed. These techniques are implemented in-lieu of the passive filtering techniques, by keeping equal or better performance. Moreover, these solutions can be configured as a stand-alone or integrated into the converter digital controller algorithm. Finally, the proposed solutions are implemented into three types of power converters, namely, a AC-DC power factor corrected converter, DC-AC micro-inverter for Photovoltaic application, and DC-DC for Electric Vehicle (EV) battery charger. Analytical, simulation and experimental results are provided to verify the proposed solutions.

Author : Xinbo Ruan
Publisher : Springer Nature
Page : 227 pages
File Size : 17,98 MB
Release : 2024-02-13
Category : Technology & Engineering
ISBN : 9819992958

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This book belongs to the subject of electrical engineering. It focuses on the modeling, prediction and reduction of conducted EMI in power converters including the AC-DC rectifiers, DC-DC converters and DC-AC inverters and provides the analytical models and solutions to conducted EMI issues in practical applications. The theoretical analysis, simulation and experimental results are well presented with figures and tables. This book is an essential and valuable reference for the graduate students and academics majoring in power electronics and the engineers being engaged in solving the conducted EMI issues in power converters. Senior undergraduate students majoring in electrical engineering and automation engineering also find this book useful.

Author : Piotr Musznicki
Publisher : Sciendo
Page : 123 pages
File Size : 42,6 MB
Release : 2018-07-31
Category :
ISBN : 9783110619270

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This book presents the phenomena of conducted electromagnetic interference (EMI) generation in DC-DC converters. The measurement and simulation are used to analyze the impact of the most important parameters on the character, level and propagation path of interference. In this book, the analysis of the interference generation and propagation is presented on the example of three basic converters. The wide banded behavior of all components is presented including basic elements and its parasitic and the connection layout. It focuses on the influence of parasitic components on the nature of interference in the frequency domain up to 30MHz was carried out. The book includes practical design and operation tips that will help to reduce the EMI. It provides useful knowledge about designing of the converters with the low level of outgoing EMI. They were obtained in original research and published in scientific articles by the author. Piotr Musznicki: Gdansk University of Technology / Faculty of Electrical and Control Engineering Buy this book on degruyter.com https: //www.degruyter.com/view/product/510353

Author : Med Salim Bouhlel
Publisher : Springer
Page : 452 pages
File Size : 32,60 MB
Release : 2019-08-01
Category : Technology & Engineering
ISBN : 303021009X

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This two-volume book presents an unusually diverse selection of research papers, covering all major topics in the fields of information and communication technologies and related sciences. It provides a wide-angle snapshot of current themes in information and power engineering, pursuing a cross-disciplinary approach to do so. The book gathers revised contributions that were presented at the 2018 International Conference: Sciences of Electronics, Technologies of Information and Telecommunication (SETIT'18), held on 20–22 December 2018 in Hammamet, Tunisia. This eighth installment of the event attracted a wealth of submissions, and the papers presented here were selected by a committee of experts and underwent additional, painstaking revision. Topics covered include: · Information Processing · Human-Machine Interaction · Computer Science · Telecommunications and Networks · Signal Processing · Electronics · Image and Video This broad-scoped approach is becoming increasingly popular in scientific publishing. Its aim is to encourage scholars and professionals to overcome disciplinary barriers, as demanded by current trends in the industry and in the consumer market, which are rapidly leading toward a convergence of data-driven applications, computation, telecommunication, and energy awareness. Given its coverage, the book will benefit graduate students, researchers and practitioners who need to keep up with the latest technological advances.

Author : Robert Smolenski
Publisher : Springer Science & Business Media
Page : 175 pages
File Size : 47,2 MB
Release : 2012-03-22
Category : Technology & Engineering
ISBN : 1447129601

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As power systems develop to incorporate renewable energy sources, the delivery systems may be disrupted by the changes involved. The grid’s technology and management must be developed to form Smart Grids between consumers, suppliers and producers. Conducted Electromagnetic Interference (EMI) in Smart Grids considers the specific side effects related to electromagnetic interference (EMI) generated by the application of these Smart Grids. Conducted Electromagnetic Interference (EMI) in Smart Grids presents specific EMI conducted phenomena as well as effective methods to filter and handle them once identified. After introduction to Smart Grids, the following sections cover dedicated methods for EMI reduction and potential avenues for future development including chapters dedicated to: •potential system services, •descriptions of the EMI spectra shaping methods, •methods of interference voltage compensation, and theoretical analysis of experimental results. By focusing on these key aspects, Conducted Electromagnetic Interference (EMI) in Smart Grids provides a concise and comprehensive coverage of an extensive subject matter. It constitutes a key resource for any industry practitioners, researchers or system designers with interest in Smart Grids, particularly their electromagnetic compatibility in the conducted EMI frequency range.

Author : L. Ashok Kumar
Publisher : CRC Press
Page : 471 pages
File Size : 39,53 MB
Release : 2023-10-02
Category : Technology & Engineering
ISBN : 1000959341

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• Discusses about the basic principles of EMI/EMC including causes and events. • Makes reader understand the problems in different applications because of EMI/EMC and the reducing methods. • Explores real-world case studies with code to provide hands-on experience. • Reviews design strategies for mitigation of noise. • Includes MATLAB, PSPICE, ADS simulations for designing EMI Filter circuits.