[PDF] Conducted Electromagnetic Interference Analysis And Filter Design For Isolated Dc Dc Converter eBook

Author : Xinbo Ruan
Publisher : Springer Nature
Page : 227 pages
File Size : 16,18 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 : 48,46 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 : Yongbin Chu
Publisher :
Page : 152 pages
File Size : 30,76 MB
Release : 2015
Category : Electromagnetic interference
ISBN : 9781339309286

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Switched-mode power supplies (SMPS) generate conducted electromagnetic interference (EMI) noise due to its fast switching of high currents and voltages. The amount of this EMI noise which a product can generate is subject to various electromagnetic compatibility (EMC) standards published by organizations or governments. In recent years, power electronics research has continuously focused on high power density and high switching frequency solutions. This leads to severe EMI issues. The reduction of EMI noise plays a critical role in the development of high power density converters. This dissertation explores some major issues related with the reduction of EMI. By investigation of these issues, the power supply and EMI filter designs might be significantly improved and the size of EMI filters might be significantly reduced. First of all, for isolated power converters, a generalized common-mode (CM) current cancellation approach is proposed to attenuate the CM noise current generated by the parasitic capacitance of semiconductor switches iCM1, and the CM noise current generated by the parasitic capacitance of transformers, iCM2, simultaneously. This approach is more efficient than conventional techniques, most of which only focus on the suppression of either iCM1 or iCM2. A forward converter is used to demonstrate the effectiveness of the proposed approach. Secondly, due to the compact design of power converters nowadays, near field coupling has become a major concern in the design of EMI filters and it often results in costly iterations and suboptimal results. To address this issue, magnetic field distribution of planar transformers is analyzed and corresponding techniques to reduce near field coupling are proposed and verified through experiments. In addition, a CM inductor with external magnetic field immunity, low magnetic field emission and high differential mode inductance is proposed. Simulation and experimental results validate the advantages of the proposed CM inductor. Finally, as a promising alternative to bulky passive EMI filter, active/hybrid EMI filters are investigated. The major problem addressed is the modeling and stability analysis of active/hybrid EMI filter, which is very critical for the industrial application of active/hybrid EMI filters. A hybrid CM filter used for DC/DC power converters is used to illustrate the modeling and stability analysis process and similar procedure can be followed to analyze other types of active/hybrid EMI filters.

Author : Robert Smolenski
Publisher : Springer Science & Business Media
Page : 175 pages
File Size : 45,12 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 : Djilali Hamza
Publisher : LAP Lambert Academic Publishing
Page : 92 pages
File Size : 14,31 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 : Richard Lee Ozenbaugh
Publisher : CRC Press
Page : 338 pages
File Size : 49,14 MB
Release : 2000-11-09
Category : Technology & Engineering
ISBN : 082474683X

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Offering simple methods of measuring AC and DC power lines, this highly popular, revised and expanded reference describes the selection of cores, capacitors, mechanical shapes, and styles for the timeliest design, construction, and testing of filters. It presents analyses of matrices of various filter types based on close approximations, observation, and trial and error. Supplying simple parameters and techniques for creating manufacturable, repeatable products, the second edition provides insights into the cause and elimination of common mode noise in lines and equipment, explores new data on spike, pulse, trapezoid, and quasisquare waves, and reviews the latest high-current filters.

Author : L. Ashok Kumar
Publisher : CRC Press
Page : 471 pages
File Size : 40,6 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.