Chaos Analysis and Chaotic EMI Suppression of DC-DC Converters

2015-04-30 Technology & Engineering

Author : Bo Zhang
Release : 2015-04-30
Genre : Technology & Engineering
Kind : eBook
Book Rating : 120/5 ( reviews)

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Book Synopsis Chaos Analysis and Chaotic EMI Suppression of DC-DC Converters by : Bo Zhang

Download or read book Chaos Analysis and Chaotic EMI Suppression of DC-DC Converters written by Bo Zhang. This book was released on 2015-04-30. Available in PDF, EPUB and Kindle. Book excerpt: Introduces chaos theory, its analytical methods and the means to apply chaos to the switching power supply design DC-DC converters are typical switching systems which have plenty of nonlinear behaviors, such as bifurcation and chaos. The nonlinear behaviors of DC-DC converters have been studied heavily over the past 20 years, yet researchers are still unsure of the practical application of bifurcations and chaos in switching converters. The electromagnetic interference (EMI), which resulted from the high rates of changes of voltage and current, has become a major design criterion in DC-DC converters due to wide applications of various electronic devices in industry and daily life, and the question of how to reduce the annoying, harmful EMI has attracted much research interest. This book focuses on the analysis and application of chaos to reduce harmful EMI of DC-DC converters. After a review of the fundamentals of chaos behaviors of DC-DC converters, the authors present some recent findings such as Symbolic Entropy, Complexity and Chaos Point Process, to analyze the characters of chaotic DC-DC converters. Using these methods, the statistic characters of chaotic DC-DC converters are extracted and the foundations for the following researches of chaotic EMI suppression are reinforced. The focus then transfers to estimating the power spectral density of chaotic PWM converters behind an introduction of basic principles of spectrum analysis and chaotic PWM technique. Invariant Density, and Prony and Wavelet analysis methods are suggested for estimating the power spectral density of chaotic PWM converters. Finally, some design-oriented applications provide a good example of applying chaos theory in engineering practice, and illustrate the effectiveness on suppressing EMI of the proposed chaotic PWM. Introduces chaos theory, its analytical methods and the means to apply chaos to the switching power supply design Approaches the subject in a systematic manner from analyzing method, chaotic phenomenon and EMI characteristics, analytical methods for chaos, and applying chaos to reduce EMI (electromagnetic interference) Highlights advanced research work in the fields of statistic characters of nonlinear behaviors and chaotic PWM technology to suppress EMI of switching converters Bridges the gap between numerical theory and real-world applications, enabling power electronics designers to both analyze the effects of chaos and leverage these effects to reduce EMI

High Frequency Conducted Emission in AC Motor Drives Fed By Frequency Converters

2018-07-11 Technology & Engineering

Author : Jaroslaw Luszcz
Release : 2018-07-11
Genre : Technology & Engineering
Kind : eBook
Book Rating : 392/5 ( reviews)

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Book Synopsis High Frequency Conducted Emission in AC Motor Drives Fed By Frequency Converters by : Jaroslaw Luszcz

Download or read book High Frequency Conducted Emission in AC Motor Drives Fed By Frequency Converters written by Jaroslaw Luszcz. This book was released on 2018-07-11. Available in PDF, EPUB and Kindle. Book excerpt: Provides a concise and thorough reference for designing electrical and electronic systems that employ adjustable speed drives Electrical and electronic systems that employ adjustable speed drives are being increasingly used in present-day automation applications. They are considered by many application engineers as one of the most interfering components, especially in a contemporarily faced industrial environment. This book fills the gap between the high-level academic knowledge in the electromagnetic compatibility (EMC) field and the recommended practical rules for assuring electromagnetic compatibility margin. It focuses on finding and formulating the issues that often occur with the generation and propagation of conducted emission in AC motor drives fed by frequency converters, rather than proposing specific solutions for dealing with them. It also features explanations of selected academic backgrounds of EMC and presents practical case studies. The book starts with an introduction to conducted emission in adjustable speed drives. It then goes on to offer in-depth chapters covering conducted emission origins in switch-mode power converters; conducted emission generation by frequency converter in adjustable speed drives (ASD); propagation of motor side originated conducted emission towards the power grid; modeling of conducted emission in ASD; broadband behavior of ASD components; and impact of a motor feeding cable on CM currents generated in ASD. In addition, this resource: Presents state-of-the-art analysis of undesirable high frequency phenomena accompanying AC motor speed control Discusses the fundamentals of phenomena of electromagnetic interference (EMI) generation in switch mode static converters Provides methodology of modeling-conducted EMI generation and propagation in ASD High Frequency Conducted Emission in AC Motor Drives Fed By Frequency Converters: Sources and Propagation Paths will appeal to scholars and a wide range of professionals who are involved in the stages of development, design, and application of adjustable speed drives in accordance with ever-increasing EMC requirements.

Uncertainty Modeling In Knowledge Engineering And Decision Making - Proceedings Of The 10th International Flins Conference

2012-08-10 Computers

Author : Cengiz Kahraman
Release : 2012-08-10
Genre : Computers
Kind : eBook
Book Rating : 750/5 ( reviews)

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Book Synopsis Uncertainty Modeling In Knowledge Engineering And Decision Making - Proceedings Of The 10th International Flins Conference by : Cengiz Kahraman

Download or read book Uncertainty Modeling In Knowledge Engineering And Decision Making - Proceedings Of The 10th International Flins Conference written by Cengiz Kahraman. This book was released on 2012-08-10. Available in PDF, EPUB and Kindle. Book excerpt: FLINS, originally an acronym for Fuzzy Logic and Intelligent Technologies in Nuclear Science, is now extended to Computational Intelligence for applied research. The contributions to the 10th of FLINS conference cover state-of-the-art research, development, and technology for computational intelligence systems, both from the foundations and the applications points-of-view.

Foundations and Applications of Intelligent Systems

2013-11-22 Technology & Engineering

Author : Fuchun Sun
Release : 2013-11-22
Genre : Technology & Engineering
Kind : eBook
Book Rating : 293/5 ( reviews)

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Book Synopsis Foundations and Applications of Intelligent Systems by : Fuchun Sun

Download or read book Foundations and Applications of Intelligent Systems written by Fuchun Sun. This book was released on 2013-11-22. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings present technical papers selected from the 2012 International Conference on Intelligent Systems and Knowledge Engineering (ISKE 2012), held on December 15-17 in Beijing. The aim of this conference is to bring together experts from different fields of expertise to discuss the state-of-the-art in Intelligent Systems and Knowledge Engineering, and to present new findings and perspectives on future developments. The proceedings introduce current scientific and technical advances in the fields of artificial intelligence, machine learning, pattern recognition, data mining, knowledge engineering, information retrieval, information theory, knowledge-based systems, knowledge representation and reasoning, multi-agent systems, and natural-language processing, etc. Furthermore they include papers on new intelligent computing paradigms, which combine new computing methodologies, e.g., cloud computing, service computing and pervasive computing with traditional intelligent methods. By presenting new methodologies and practices, the proceedings will benefit both researchers and practitioners who want to utilize intelligent methods in their specific fields. Dr. Fuchun Sun is a professor at the Department of Computer Science & Technology, Tsinghua University, China. Dr. Tianrui Li is a professor at the School of Information Science & Technology, Southwest Jiaotong University, Chengdu, China. Dr. Hongbo Li also works at the Department of Computer Science & Technology, Tsinghua University, China.

Analysis and Control of the Chaotic Behavior in a Multi-Cell DC/DC Buck Converter

2018 Science

Author : Karama Koubaâ
Release : 2018
Genre : Science
Kind : eBook
Book Rating : 983/5 ( reviews)

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Book Synopsis Analysis and Control of the Chaotic Behavior in a Multi-Cell DC/DC Buck Converter by : Karama Koubaâ

Download or read book Analysis and Control of the Chaotic Behavior in a Multi-Cell DC/DC Buck Converter written by Karama Koubaâ. This book was released on 2018. Available in PDF, EPUB and Kindle. Book excerpt: "Multi-cell power converters have been widely used in real applications since they circumvent shortcomings of ordinary switching devices due to their ability to support high-voltages. In this book, we deal with the case of an N-cell DC/DC buck converter, and we present a systematic method to control the voltage across the flying capacitors and the current through the load that can be generalized from a two-cell converter to an N-cell converter. The system was described by a discrete-time model through some simplifying assumptions to derive easily the general model in the form of a recurrence equation, which is useful in the design of control laws and exhibits chaotic behavior, bifurcations and strange phenomena when applying feedback control methods. In addition, the problem of the windup phenomenon, which is caused by the effect of switching, was discussed along with an anti-windup approach that was developed and successfully applied to the controlled DC/DC buck converter. A generalization of the various control laws adopted and a comparison between the results obtained with these methods were given, including the performance of the controlled system and the types of bifurcations encountered. Throughout this work, it has been shown that as the number of cells in the converter increases, the complexity of the uncontrolled system model and the closed loop system also increases"--

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Chaos Analysis and Chaotic EMI Suppression of DC-DC Converters

High Frequency Conducted Emission in AC Motor Drives Fed By Frequency Converters

Uncertainty Modeling In Knowledge Engineering And Decision Making - Proceedings Of The 10th International Flins Conference

Foundations and Applications of Intelligent Systems

Analysis and Control of the Chaotic Behavior in a Multi-Cell DC/DC Buck Converter

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