Download or read book Low Frequency Electromagnetic Design written by Perry and published by CRC Press. This book was released on 1985-08-26 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a detailed investigation of steady-state "eddy current" analysis and electromechanical processes relying on low frequency electromagnetic induction. It also presents classical one- and two-dimensional formulations for coils, cables, and induction motors.
Download or read book Low Frequency Electromagnetic Design written by Perry and published by Routledge. This book was released on 2019-01-22 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: In an historical context, the development of electromagnetic theory and anaylsis has undergone many evolutionary changes since the 19th century. Faraday's 1831 discovery of the magnetic induction principle was at first a scientific curisoity, then a subject of intense intellectual activity resulting in the infication of the macroscopic electromagnetic principles through Maxwell's equations. One of the subdisciplines created by the discovery of electromagnetic induction and its theoretical foundation was the anaylsis of specific arrangements of ponderable bodies, including conductors which interact with electromagnetic fields to produce the measurable phyiscal effects which we call heat and mechanical force. This book is intended neither as a suppliment or replacement for previous texts, however, a number of conductor arrangements are covered here which are not done elsewhere. It is primarily for industrial use; where insight into the physical processes may be of practical value.
Download or read book Low Frequency Electromagnetic Design written by Perry and published by Routledge. This book was released on 2019-01-22 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: In an historical context, the development of electromagnetic theory and anaylsis has undergone many evolutionary changes since the 19th century. Faraday's 1831 discovery of the magnetic induction principle was at first a scientific curisoity, then a subject of intense intellectual activity resulting in the infication of the macroscopic electromagnetic principles through Maxwell's equations. One of the subdisciplines created by the discovery of electromagnetic induction and its theoretical foundation was the anaylsis of specific arrangements of ponderable bodies, including conductors which interact with electromagnetic fields to produce the measurable phyiscal effects which we call heat and mechanical force. This book is intended neither as a suppliment or replacement for previous texts, however, a number of conductor arrangements are covered here which are not done elsewhere. It is primarily for industrial use; where insight into the physical processes may be of practical value.
Download or read book Design of Low Frequency Electromagnetic Induction System Controlled by Labview written by Stephen Ronald Landers and published by . This book was released on 2005 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Robust Topological Design of Low Frequency Electromagnetic Devices written by Min Li and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This thesis presents an automated topological design system for low frequency electromagnetic devices, e.g. an interior permanent magnet motor. The automated design is carried out through a topological shape optimization process: first, the system employs a topological sensitivity analysis to examine the design domain and to determine the optimal topology (distribution of source and materials); second, the system uses a shape optimizer to further improve the design; these two steps are performed alternately until the optimality condition is satisfied. The robustness of a topology with respect to small variations on its geometries is studied and a robustness measure is defined, originally in the thesis, as the worst case performance of an objective function for the topology and shape optimization. Therefore, the idea of robust design can be applied to the conceptual design (topological design) of electrical machines. Other than the application to motor design, the topology optimization algorithm developed in the thesis, was used originally in the non-destructive testing for quickly location and accurately shape reconstruction of cracks." --
Download or read book Design and Analysis of Low Frequency Electromagnetic Devices written by Hussein Moghnieh and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The design and analysis of low frequency electromagnetic devices on digital computers using the Finite Element Method (FEM) are computationally expensive and time-consuming. In the past decade, assiduous efforts have been dedicated to exploring and exploiting the parallelism of specific FEM kernels with the aim of enhancing their performance on multi-core processors. Despite having proved advantageous in promoting the speed of specific kernels, how this approach globally impacts the time duration required for the completion of the design process remains unclear, so is the question of whether such an approach takes full advantage of the capacity of multi-core processors. We attempted to overcome these caveats by applying a holistic approach that focuses on the parallel performance of key FEM components, mainly mesh generation, matrix assembly and Preconditioned Conjugate Gradient (PCG). Our investigation generated three main findings. First, we show that two factors, namely the degrees and exploitation techniques of parallelism differ among the kernels of the FEM solver component using PCG. This fact leads to low thread utilization and a waste of computational resources. Second, contrary to the notion that fine-grained multi-threaded algorithms, albeit involving much synchronization, do not affect the time efficiency of multi-core processors, we show that fine-grained multi-threaded algorithms can in fact be time costly in certain cases involving multi-core processors, particularly so when the ratio of computation runtime to synchronization runtime is relatively small. Third, we found the performance level of algorithms to be inversely related to the size of the problem, suggesting that using domain decomposition techniques to solve smaller problems is likely to pay off. These findings support the argument that instead of exploring parallelism in single components, a holistic approach focusing on the global design process would be more valuable. " --
Download or read book Design and Applications of Two Low Frequency Guided Wave Electromagnetic Measurement Structures written by Chi-Chih Chen and published by . This book was released on 1993 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low Frequency Electromagnetic Modeling for Electrical and Biological Systems Using MATLAB written by Sergey N. Makarov and published by John Wiley & Sons. This book was released on 2015-05-13 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a detailed and systematic description of the Method of Moments (Boundary Element Method) for electromagnetic modeling at low frequencies and includes hands-on, application-based MATLAB® modules with user-friendly and intuitive GUI and a highly visualized interactive output. Includes a full-body computational human phantom with over 120 triangular surface meshes extracted from the Visible Human Project® Female dataset of the National library of Medicine and fully compatible with MATLAB® and major commercial FEM/BEM electromagnetic software simulators. This book covers the basic concepts of computational low-frequency electromagnetics in an application-based format and hones the knowledge of these concepts with hands-on MATLAB® modules. The book is divided into five parts. Part 1 discusses low-frequency electromagnetics, basic theory of triangular surface mesh generation, and computational human phantoms. Part 2 covers electrostatics of conductors and dielectrics, and direct current flow. Linear magnetostatics is analyzed in Part 3. Part 4 examines theory and applications of eddy currents. Finally, Part 5 evaluates nonlinear electrostatics. Application examples included in this book cover all major subjects of low-frequency electromagnetic theory. In addition, this book includes complete or summarized analytical solutions to a large number of quasi-static electromagnetic problems. Each Chapter concludes with a summary of the corresponding MATLAB® modules. Combines fundamental electromagnetic theory and application-oriented computation algorithms in the form of stand alone MATLAB® modules Makes use of the three-dimensional Method of Moments (MoM) for static and quasistatic electromagnetic problems Contains a detailed full-body computational human phantom from the Visible Human Project® Female, embedded implant models, and a collection of homogeneous human shells Low-Frequency Electromagnetic Modeling for Electrical and Biological Systems Using MATLAB® is a resource for electrical and biomedical engineering students and practicing researchers, engineers, and medical doctors working on low-frequency modeling and bioelectromagnetic applications.
Download or read book Design and Development of Extremely Low Frequency Electromagnetic Field Exposure Data Monitoring System written by Caroline Livan Anyi and published by . This book was released on 2012 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Finite Element Method to Model Electromagnetic Systems in Low Frequency written by Francis Piriou and published by John Wiley & Sons. This book was released on 2024-04-02 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical modeling now plays a central role in the design and study of electromagnetic systems. In the field of devices operating in low frequency, it is the finite element method that has come to the fore in recent decades. Today, it is widely used by engineers and researchers in industry, as well as in research centers. This book describes in detail all the steps required to discretize Maxwell’s equations using the finite element method. This involves progressing from the basic equations in the continuous domain to equations in the discrete domain that are solved by a computer. This approach is carried out with a constant focus on maintaining a link between physics, i.e. the properties of electromagnetic fields, and numerical analysis. Numerous academic examples, which are used throughout the various stages of model construction, help to clarify the developments.
Download or read book Ultra Low Frequency Electromagnetic Fire Alarm System for Underground Mines written by Kenneth E. Hjelmstad and published by . This book was released on 1991 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Human Exposure to Electromagnetic Fields written by Patrick Staebler and published by John Wiley & Sons. This book was released on 2017-05-12 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Everyone, whether they like it or not, is exposed to electromagnetic fields, most of the time, at very low levels. In this case, they are inconsequential, but they can cause adverse health effects when they become intense enough. This topic is complex and sensitive. Covering frequencies from 0 Hz to 300 GHz, Human Exposure to Electromagnetic Fields provides an overview of this vast topic. After a reminder of the concepts of electromagnetic fields, the author presents some examples of sources of radiation in daily life and in the industrial or medical sectors. The biophysical and biological effects of these fields on the human body are detailed and the exposure limits are recalled. The exposure assessment and the implementation of the appropriate regulation within companies are also covered. Technically and practically, this book is aimed at people with a scientific background, risk prevention actors, health physicians, especially occupational doctors, and equipment designers.
Download or read book Electromechanical Transmitters for ELF VLF Radio written by Jarred S. Glickstein and published by Springer Nature. This book was released on 2022-11-02 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes a new, extremely low frequency (ELF)/ very low frequency (VLF) miniaturized transmitter concept, based on the mechanical motion of permanent magnets or electrets. The authors explain how utilizing the very high energy density of modern ferromagnetic and ferroelectric materials, such “electromechanical transmitters’’ can provide much higher field generation efficiency than conventional antennas, thus enabling practical ELF/VLF wireless communications links. The text begins with the fundamental challenges of such links and provides an historical overview of the attempts that have been made to address these challenges. It then focuses on the design and implementation of practical electromechanical ELF/VLF transmitters, which is an interdisciplinary subject that spans multiple research areas including electromagnetics, power electronics, control systems, and mechanical design. The authors also describe how such transmitters can be combined with receivers and signal processing algorithms to realize complete ELF/VLF links in challenging environments.
Download or read book Co simulations of Microwave Circuits and High Frequency Electromagnetic Fields written by Mei Song Tong and published by Springer Nature. This book was released on with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electromagnetic Compatibility for Space Systems Design written by Nikolopoulos, Christos D. and published by IGI Global. This book was released on 2018-03-02 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the aerospace industry, avoiding operating issues, especially in regard to space missions and satellite structures, is crucial. The vast majority of these issues can be traced to disturbances in the electromagnetic fields used. Electromagnetic Compatibility for Space Systems Design is a critical scholarly resource that examines the applications of electromagnetic compatibility and electromagnetic interference in the space industry. Featuring coverage on a wide range of topics, such as magnetometers, electromagnetic environmental effects, and electromagnetic shielding, this book is geared toward managers, engineers, and researchers seeking current research on the applications of electromagnetic technologies in the aerospace field.
Download or read book Simulations of Low frequency Electromagnetic Fields in the Human Body written by Andreas Barchanski and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low Frequency Applications of Electromagnetics With Particular Reference to Electrical Machines written by Richard Stoll and published by Lulu.com. This book was released on 2011-05-06 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book contains a wide selection of practical low-frequency problems in electromagnetism solved algebraically using the method of "separation of variables." The degree of difficulty ranges from simple to very challenging, the latter mainly concerning large two-pole turbogenerators. Where necessary the electrical-machine theory is explained in the text, but it is assumed that the reader has some basic knowledge of electromagnetism. However, the book commences with three short chapters on electromagnetic theory for ease of reference.
