Influence of System Parameters Using Fuse Protection of Regenerative DC Drives

Dr. Hedaya Alasooly

Publisher: BookRix

Summary

Current-limiting fuses are widely used to protect the thyristors in dc drive systems. In the event of the commutation failure when regenerating (inverting), the fuses need to interrupt in loop supplied by the ac and dc voltages acting in series which is the most difficult case for protection by fuse. 
  
In this report, a detailed study of the complete interruption process has been investigated by modeling of arcing process of the fuse. The effect varying the motor time constant, supply impedance, number of fuses used to clear the fault and dc machine rating to the total response for fuses protecting against the regenerative circuit internal commutation fault has been studied. The model of 200A fuse is employed in this study and fuses in series with the semiconductor devices (F1) and fuses in ac line (F2) are both considered.

Available since: 12/21/2023.

Print length: 15 pages.

Science & Technology

Other books that might interest you

Number Theory - A Very Short...

Robin Wilson

Number theory is the branch of mathematics that is primarily concerned with the counting numbers. Of particular importance are the prime numbers, the "building blocks" of our number system. The subject is an old one, dating back over two millennia to the ancient Greeks, and for many years has been studied for its intrinsic beauty and elegance, not least because several of its challenges are so easy to state that everyone can understand them, and yet no one has ever been able to resolve them.But number theory has also recently become of great practical importance—in the area of cryptography, where the security of your credit card, and indeed of the nation's defense, depends on a result concerning prime numbers that dates back to the eighteenth century. Recent years have witnessed other spectacular developments, such as Andrew Wiles's proof of "Fermat's last theorem" (unproved for over 250 years) and some exciting work on prime numbers. In this Very Short Introduction Robin Wilson introduces the main areas of classical number theory, both ancient and modern. Drawing on the work of many of the greatest mathematicians of the past, such as Euclid, Fermat, Euler, and Gauss, he situates some of the most interesting and creative problems in the area in their historical context.

Show book

Uncovering the Hidden Worlds...

Percival Wohlleben, Peter Everett

Uncovering the Hidden Worlds Within Leaves, Stems, and Roots 🍃🔍🌳
Welcome, intrepid explorers of the minute and marvelers of the botanical! Are you intrigued by the microscopic universes that dwell within the plants around us? Ready to uncover the secrets of photosynthesis, transpiration, and nutrient transport that power our green earth? Your microscopic adventure into plant biology begins now!
Embark on a journey into the cellular soul of the plant kingdom:
🍃 Cellular Landscapes: Traverse the complex structures of plant cells, where the unseen becomes visible, revealing the beauty and sophistication of nature’s designs.
🔍 Vascular Voyages: Navigate the highways of xylem and phloem, unveiling the processes that fuel growth and the lifecycles of plants from seedling to towering tree.
🌳 Root Revelations: Dig deep into the earth’s crust, where roots form alliances with fungi and microorganisms, forging a symbiotic nexus vital for our planet’s health.
"The Hidden Worlds Within Leaves, Stems, and Roots" intertwines vivid imagery with accessible explanations, offering a lens to view the unobservable. It commits to bridging the gap between the seen and unseen, educating and inspiring nature enthusiasts and aspiring botanists alike.
Focus your lens. Stain your slides. Immerse yourself in "Uncovering the Hidden Worlds Within Leaves, Stems, and Roots," and let each discovery enlighten your appreciation of the botanical world, where every detail is a masterpiece of evolution.
Equip your lab coat, adjust your microscope, and embark on this microscopic odyssey. The hidden universe within plants awaits your curious eye! 🍃🔍🌳🌱

Show book

Earth Life and System -...

Bruce Clark

“A strikingly original . . . collection of essays, which places the work and broad intellectual interests of Lynne Margulis in a variety of contexts.” —Stacy Alaimo, author of Exposed: Environmental Politics and Pleasures in Posthuman Times 
 
Exploring the broad implications of evolutionary theorist Lynn Margulis’s work, this collection brings together specialists across a range of disciplines, from paleontology, molecular biology, evolutionary theory, and geobiology to developmental systems theory, archaeology, history of science, cultural science studies, and literature and science. Addressing the multiple themes that animated Margulis’s science, the essays within take up, variously, astrobiology and the origin of life, ecology and symbiosis from the microbial to the planetary scale, the coupled interactions of earthly environments and evolving life in Gaia theory and earth system science, and the connections of these newer scientific ideas to cultural and creative productions. 
 
“Altogether, Earth, Life, and System offers a series of often fascinating, always stimulating . . . invariably enriching essays in an incisive and unruly science and its existential repercussions. It is a fitting tribute to one of modern science’s most generative and productive independent spirits, a gadfly like Socrates whose ultimate concern was to ensure that enquiry and debate were never stifled by received opinion and ‘normal’ expectations.” —The British Society for Literature and Science 
 
“A vital contribution to interdisciplinary knowledge about life, evolution, and the planetary imaginary.” —Tyler Volk, award-winning author of Quarks to Culture 
 
“Contributors include biologists, philosophers, historians, and even Margulis’s son, a science writer who sets the tone for the rest of the text in an intimate first chapter about his mother. Clarke’s sought-after interdisciplinarity shines in the finished product.” —Isis Review

Show book

An Agenda for Western Balkans:...

Nikolaos Papakostas, Nikolaos...

{\rtf1\fbidis\ansi\ansicpg1252\deff0\deflang1031{\fonttbl{\f0\fswiss\fprq2\fcharset0 Calibri;}{\f1\fnil\fcharset0 MS Shell Dlg;}}

\viewkind4\uc1\pard\ltrpar\hyphpar0\sl276\slmult1\lang2057\f0\fs22 The Western Balkan countries have been both a popular subject matter for diachronic analysis and a 1990s favorite. The significant changes that followed the most recent times of conflict in the region mostly evolve around the process of Europeanization. Despite the plethora of analyses, most approaches to the Western Balkans suffer from theoretical stagnancy, ex parte political practice, and detachment of politics from societal needs.  

\par This volume is the work of a team of theorists and practitioners who attempt a multidisciplinary approach to Western Balkans reality. \i An Agenda for the Western Balkans \i0 offers a critical view on issues that have been over-analyzed in mainstream terms and opens a discussion that will occupy researchers and practitioners for years to come. It addresses novel topics and engages in innovative approaches that cut across disciplines of social sciences (political science, international relations, sociology, historiography, geography, political economy) and levels of analysis (local, national, regional, European, global). This collection is a pioneer theoretical and practical guide towards a sustainable future for the Western Balkans.\lang1031\f1\fs17 

\par }

Show book

Ai with us or us with the ai? -...

Pavel Zlatnik

Step into the future of technology with this groundbreaking book on artificial intelligence. Through rigorous stress testing of the latest advancements between 2022 and 2023, I confirmed that we're on the brink of a new industrial revolution. This book showcases AI's incredible abilities, from predicting the past and future to its soon-to-be-superior capabilities in comparison to humans.
Let me tell you what you'll discover in this book - An introduction to the fascinating world of AI and GPT, a wealth of real-life use cases, and practical examples to inspire your creativity. You'll also learn the tips and tricks to unlock the full potential of GPT, as well as its abstract capabilities that will astonish you. And finally, we've included some fun and mystery that will surely captivate your imagination.
Are you curious about AI? What is the future of artificial intelligence? Where it will go? Who could benefit from it? How does “it” operates? Should we be afraid of it? How does it “think” about us? Or Who is GPT? Who will lose their job the fastest? How to handle alien invasion? Who was Jesus? Why got president Kennedy murdered?
Open this book and learn everything you dreamed of knowing the answers to.
Here’s what’s included in the book:Introduction to AI and GPTTips for AI toolsReal Life Use CasesReal Life Example PromptsAI usage from various perspectivesTips and Tricks for prompting
Are you ready to embark on an incredible journey of exploring the world of artificial intelligence? Then look no further than 'AI WITH US, OR US WITH THE AI'! Don't wait any longer, purchase your copy now and begin your journey into the limitless possibilities of AI.

Show book

Dungeon Hacks - How NetHack...

David L. Craddock

In 1980, computers were instruments of science and mathematics, military secrets and academia. Stern administrators lorded over sterile university laboratories and stressed one point to the wide-eyed students privileged enough to set foot within them: Computers were not toys.Defying authority, hackers seized control of monolithic mainframes to create a new breed of computer game: the roguelike, cryptic and tough-as-nails adventures drawn from text-based symbols instead of state-of-the-art 3D graphics.Despite their visual simplicity, roguelike games captivate thousands of players around the world. From the author of the bestselling Stay Awhile and Listen series, Dungeon Hacks introduces you to the visionaries behind some of the most popular roguelikes of all time, and shows how their creations paved the way for the blockbuster video games of today—and beyond.

Show book