Download or read book Electricity low Frequency written by F. L. Hermach and published by . This book was released on 1968 with total page 0 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 Precision Measurement and Calibration Electricity low frequency written by and published by . This book was released on 1969 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Precision Measurement and Calibration Electricity low frequency F L Hermach and R F Dziuba editors written by United States. National Bureau of Standards and published by . This book was released on 1968 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis and Damping Control of Power System Low frequency Oscillations written by Haifeng Wang and published by Springer. This book was released on 2016-03-30 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the research and development results on power systems oscillations in three categories of analytical methods. First is damping torque analysis which was proposed in 1960’s, further developed between 1980-1990, and widely used in industry. Second is modal analysis which developed between the 1980’s and 1990’s as the most powerful method. Finally the linearized equal-area criterion analysis that is proposed and developed recently. The book covers three main types of controllers: Power System Stabilizer (PSS), FACTS (Flexible AC Transmission Systems) stabilizer, and ESS (Energy Storage Systems) stabilizer. The book provides a systematic and detailed introduction on the subject as the reference for industry applications and academic research.

Download or read book Possible Health Effects of Exposure to Residential Electric and Magnetic Fields written by National Research Council and published by National Academies Press. This book was released on 1997-03-18 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Can the electric and magnetic fields (EMF) to which people are routinely exposed cause health effects? This volume assesses the data and draws conclusions about the consequences of human exposure to EMF. The committee examines what is known about three kinds of health effects associated with EMF: cancer, primarily childhood leukemia; reproduction and development; and neurobiological effects. This book provides a detailed discussion of hazard identification, dose-response assessment, exposure assessment, and risk characterization for each. Possible Health Effects of Exposure to Residential Electric and Magnetic Fields also discusses the tools available to measure exposure, common types of exposures, and what is known about the effects of exposure. The committee looks at correlations between EMF exposure and carcinogenesis, mutagenesis, neurobehavioral effects, reproductive and developmental effects, effects on melatonin and other neurochemicals, and effects on bone healing and stimulated cell growth.

Download or read book Health Effects of Low frequency Electric and Magnetic Fields written by ORAU Panel on Health Effects of Low-Frequency Electric and Magnetic Fields and published by . This book was released on 1992 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Exposure to Extremely Low Frequency Electromagnetic Fields at an Electrical Generation Facility written by Thomas Robert Carroll and published by . This book was released on 1996 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dirty Electricity written by Samuel Milham MD MPH and published by iUniverse. This book was released on 2012-12-06 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: When Thomas Edison began wiring New York City with a direct current electricity distribution system in the 1880s, he gave humankind the magic of electric light, heat, and power; in the process, though, he inadvertently opened a Pandoras Box of unimaginable illness and death. Dirty Electricity tells the story of Dr. Samuel Milham, the scientist who first alerted the world about the frightening link between occupational exposure to electromagnetic fields and human disease. Milham takes readers through his early years and education, following the twisting path that led to his discovery that most of the twentieth century diseases of civilization, including cancer, cardiovascular disease, diabetes, and suicide, are caused by electromagnetic field exposure. In the second edition, he explains how electrical exposure does its damage, and how electricity is causing our current epidemics of asthma, diabetes and obesity. Dr. Milham warns that because of the recent proliferation of radio frequency radiation from cell phones and towers, terrestrial antennas, Wi-Fi and Wi-max systems, broadband internet over power lines, and personal electronic equipment, we may be facing a looming epidemic of morbidity and mortality. In Dirty Electricity, he reveals the steps we must take, personally and as a society, to coexist with this marvelous but dangerous technology.

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 Extremely Low Frequency ELF Electric and Magnetic Fields written by R. Timothy Hitchcock and published by . This book was released on 1995 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Extremely Low Frequency Magnetic Fields in Electrical Substations and Residential Areas of Mangaung Metropolitan Municipality written by Phoka Caiphus Rathebe and published by . This book was released on 2016 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the beginning of the twenty first century electricity has become an integral part of every human‟s life. Without electricity some of the human activities on planet earth would have never been brought into existence and some of them will not be possible (Fews, 1999). Electricity is supplied to old and current technology apparatus such as computers, different types of machinery, laboratory and medical devices, household appliances, automobiles, and treatment plant equipment. Electricity moves from power generation plants (power stations) in a form of high voltage to urban and rural electrical substations where it will be converted into low voltage to suit residential electrical processes (Ilonen, 2008). According to Kaune (1993), high voltage electricity moves through overhead and underground power lines and it is converted into low voltage once it reaches electrical distribution substations in the residential areas. Furthermore, electrical substations serve many functions, such as controlling, collecting and transferring power on electrical systems (Kaune, 1993). Along the transportation and conversion of voltages, the two invisible fields known as magnetic and electric fields are produced (Kovetz, 2000). Both magnetic and electric fields are produced by movement of charged and stationary electrical particles as described in the Maxwell‟s equation (Lee, 1996). These fields are expressed in hertz (Hz) and can be classified as very low frequency (VLF), low frequency (LF), extremely low frequency (ELF) and high frequency fields (HFF) (Brent, 1999). Extremely low frequency (ELF) magnetic fields are fields with frequency that ranges between 3 to 3000 Hz and they are usually formed when the electrical current flows (World Health Organisation, 2007). According to Sinatra (2002), once there is higher current flow during conversion or transmission, high voltages are produced as a result of increased magnetic field flux. High voltages are mainly used when transferring power over long distances from generation plants to final distribution substations (Portier and Wolfe, 1998). When electricity is being transferred and has reached distribution substations, the intensity of the electric and magnetic fields changes. Lacy-Hulbert, Metcalfe and Hesketh (1998) indicated that an intensity of electric fields created is determined by the amount of voltages transferred and the flow of current determines the magnitude of magnetic fields that will be produced. The force of both magnetic and electric fields is induced by different substation devices which include wirings, cables and installations. According to the National Institute for Environmental Health (NIEH) (2002), most substations use alternating current (AC) in distributing and converting current, which produces magnetic and electric fields at various magnitude levels. The level of exposure to magnetic fields is determined by the distance between the source and the receiver (Portier and Wolfe, 1998). According to Loomis and Savitz (1995), individuals in close proximity to distribution substations are more likely to be exposed to high levels of magnetic fields than those residing far from them. Individuals exposed to magnetic fields are likely to develop detrimental health effects, such as childhood leukaemia. However there is still controversy on this matter (Draper, 2005).

Download or read book Research on Power Frequency Fields Completed Under the Energy Policy Act of 1992 written by National Research Council and published by National Academies Press. This book was released on 1999-06-07 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the 1970s, concerns about health hazards associated with electric and magnetic fields from power lines and from workplace, school, and household use of electricity have led to many studies and continued controversy about whether adverse health effects occur. In the Energy Policy Act of 1992 (Public Law 102-486), Congress authorized a focused national research program to study the possible health effects of exposure to low-intensity, 60-hertz electric and magnetic fields. In response to this legislation and at the request of the Department of Energy (DOE), the National Research Council established a committee under the Board on Radiation Effects Research (BRER) in the Commission on Life Sciences (CLS) to aid in its review of the power-frequency magnetic field research activities completed under the Electric and Magnetic Fields Research and Public Information Dissemination (EMF-RAPID) program that was authorized by the Energy Policy Act. The Research Council's Committee to Review the Research Activities Completed Under the Energy Policy Act of 1992 (EPACT) was asked to review the EMF-RAPID program implemented by DOE and the National Institute of Environmental Health Sciences (NIEHS), and research strategies suggested by other federal and nonfederal groups.

Download or read book Piezoelectric Energy Harvesting written by Alper Erturk and published by John Wiley & Sons. This book was released on 2011-04-04 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: The transformation of vibrations into electric energy through the use of piezoelectric devices is an exciting and rapidly developing area of research with a widening range of applications constantly materialising. With Piezoelectric Energy Harvesting, world-leading researchers provide a timely and comprehensive coverage of the electromechanical modelling and applications of piezoelectric energy harvesters. They present principal modelling approaches, synthesizing fundamental material related to mechanical, aerospace, civil, electrical and materials engineering disciplines for vibration-based energy harvesting using piezoelectric transduction. Piezoelectric Energy Harvesting provides the first comprehensive treatment of distributed-parameter electromechanical modelling for piezoelectric energy harvesting with extensive case studies including experimental validations, and is the first book to address modelling of various forms of excitation in piezoelectric energy harvesting, ranging from airflow excitation to moving loads, thus ensuring its relevance to engineers in fields as disparate as aerospace engineering and civil engineering. Coverage includes: Analytical and approximate analytical distributed-parameter electromechanical models with illustrative theoretical case studies as well as extensive experimental validations Several problems of piezoelectric energy harvesting ranging from simple harmonic excitation to random vibrations Details of introducing and modelling piezoelectric coupling for various problems Modelling and exploiting nonlinear dynamics for performance enhancement, supported with experimental verifications Applications ranging from moving load excitation of slender bridges to airflow excitation of aeroelastic sections A review of standard nonlinear energy harvesting circuits with modelling aspects.

Download or read book Ultra and Extremely Low Frequency Electromagnetic Fields written by Vadim Surkov and published by Springer. This book was released on 2014-07-08 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: The major emphasis of this book is on physical mechanisms and sources of the ULF/ELF natural electromagnetic fields noises. In the course of this text, some of these mechanisms of magnetospheric origin will be treated in detail and others in a more sketchy fashion, while the global electromagnetic resonances excited by lightning activity and other sources are the priority. The interested reader is referred to the books cited in the text for details about the ULF/ELF fields of magnetospheric origin. Much emphasis is put on studies of electromagnetic phenomena caused by rock deformation/fracture including the ULF/ELF effects possibly associated with tectonic activity, earthquakes and other natural disasters. One of the challenges of this research is to fully understand electromagnetic effects and physical processes in the rocks deep in the Earth’s crust.

Download or read book Wireless Radio written by Lewis Coe and published by McFarland. This book was released on 2006-02-22 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1873 Scottish physicist James Clerk Maxwell first advanced the idea that there might be electromagnetic waves that were similar to light waves, a startling concept to the scientists of his day. About 13 years later, German physicist Heinrich Hertz demonstrated in his laboratory that electromagnetic radiation did indeed exist. But it was not until after Hertz's death that a young Italian named Guglielmo Marconi got the idea for a practical communications system based on Hertz's work. Marconi was surprised and disappointed that the Italian government was not interested in his newly discovered wireless communications system, and thus he took his equipment to England. From that point on, the wireless became identified with Britain. From these beginnings, wireless radio became the basis of a revolution that has resulted in the satellite communications of today. This history first looks at Marconi's invention and then explores its many applications, including marine radio, cellular telephones, police and military uses, television and radar. Radio collecting is also discussed, and brief biographies are provided for the major figures in the development and use of the wireless.