Download or read book Investigation of Reliability Aspects of Power Semiconductors in Photovoltaic Central Inverters for Sunbelt Regions written by Christian Felgemacher and published by kassel university press GmbH. This book was released on 2018-03-23 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: High reliability and system lifetimes in the range of 30 years are essential for renewable energy systems such as photovoltaic power plants to minimise costs for the generated electric energy. At the same time such systems are used in regions with high solar irradiance and also harsh environmental conditions. Therefore, designs for photovoltaic inverters need to meet not only the key design criteria of high conversion efficiency but also need to be very robust and at the same time meet challenging cost targets. In this dissertation aspects concerning the lifetime and reliability of power semiconductors in photovoltaic central inverters are investigated. On key topic of the dissertation is the measurement of the voltage dependent failure rate due to cosmic radiation induced single-event-burnout of SiC and Si power semiconductors. The second topic is the development of a system level simulation to quantify the stress on the power semiconductors in a PV central inverters in various regions of the world. Further topics are the investigation of improved control concepts for the cooling system of PV central inverters and the monitoring of IGBT temperatures during converter operation.

Download or read book The Imperial Mode of Living written by Ulrich Brand and published by Verso Books. This book was released on 2021-01-26 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our Unsustainable Life: Why We Can't Have Everything We Want With the concept of the Imperial Mode of Living, Brand and Wissen highlight the fact that capitalism implies uneven development as well as a constant and accelerating universalisation of a Western mode of production and living. The logic of liberal markets since the 19thCentury, and especially since World War II, has been inscribed into everyday practices that are usually unconsciously reproduced. The authors show that they are a main driver of the ecological crisis and economic and political instability. The Imperial Mode of Living implies that people's everyday practices, including individual and societal orientations, as well as identities, rely heavily on the unlimited appropriation of resources; a disproportionate claim on global and local ecosystems and sinks; and cheap labour from elsewhere. This availability of commodities is largely organised through the world market, backed by military force and/or the asymmetric relations of forces as they have been inscribed in international institutions. Moreover, the Imperial Mode of Living implies asymmetrical social relations along class, gender and race within the respective countries. Here too, it is driven by the capitalist accumulation imperative, growth-oriented state policies and status consumption. The concrete production conditions of commodities are rendered invisible in the places where the commodities are consumed. The imperialist world order is normalized through the mode of production and living.

Download or read book The Forests of the Congo Basin written by Carlos de Wasseige and published by . This book was released on 2012 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 2010 State of the Forest report (SOF) benefited from financial support from the European Union, the United States, Germany, France and UNESCO. It represents the collaborative effort of over 100 individuals from a diversity of institutions and the forestry administrations of the Central African countries. The SOF process began with the selection and definition of indicators relevant to monitoring the state of forests in Central Africa. The indicators are structured around three thematic areas: (i) forest cover; (ii) management of production forests; and (iii) conservation and biodiversity. They are presented in a hierarchical structure at the regional, national and management unit (i.e. logging concessions and protected areas) levels. The indicators were vetted by a representative panel of stakeholders of forest management in Central Africa. The indicators are used to guide an annual data collection process carried out between April and August by national groups of four to ten individuals working within the forestry administrations. The data reported on in the 2010 SOF were primarily collected in 2009 and 2010. Results were validated in national workshops attended by government officials as well as representatives of environmental NGOs, the private sector and development projects. The data provided an important basis for the authors of the 11 chapters of the 2010 SOF, which were under the coordination of a scientific committee of international renown. A final workshop was held 29-30 March, 2011 in Douala to review a draft report. Following amendments based on comments from a wide audience of experts the final layout was completed.

Download or read book The Transition Handbook written by Rob Hopkins and published by Bloomsbury Publishing. This book was released on 2008-02-25 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Move from feeling anxious about the oil crisis to developing a positive visions and taking traction action to create a more self-reliant existence with this ground-breaking book. We live in an oil-dependent world, and have become reliant in a very short space of time, using vast reserves of oil in the process – and without planning for when the supply is not so plentiful. Most of us avoid thinking about what happens when the oil runs out (or becomes prohibitively expensive), but the reality may not be as bad as we think. The Transition Handbook shows how the inevitable and profound changes ahead could have a positive effect. Written by permaculture expert Rob Hopkins, he discusses the possibility of a rebirth of local communities, which will generate their own fuel, food and housing. These will encourage the development of local currencies, to keep money in the local area, and unleash a local 'skilling-up', so that people have more control over their lives. The growth in interest in the Transition model continues to be exponential. There are now more than 35 formal Transition Initiatives in the UK, including towns, cities, islands, villages and peninsulas, with more joining as the idea takes off. With little proactivity at government level, communities are taking matters into their own hands and acting locally. If your community has not yet become a Transition Initiative, this upbeat guide, filled with beautiful black and white photographs, offers you the tools to get started. The Transition Handbook is the perfect manual to guide communities, as they begin this 'energy descent' journey.

Download or read book Writing Japonisme written by Pamela A. Genova and published by Northwestern University Press. This book was released on 2016-04-30 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: In her book, Pamela Genova suggests that as critics move in general from a literal to a more metaphoric understanding and presentation of Japonisme, the mutability of the phenomenon is highlighted in a rich and illuminating manner. By exploring the conditions of the creation of these works, accenting the original aims of the artists, the manipulations carried out by art dealers, gallery owners, and boutique managers, as well as the gestures of explanation, interpretation, and judgment offered by the professional and amateur critics, Japonisme takes on an even more versatile nature. Further, a complex web of correspondence germinates among these artists—both French and Japanese—and their many critics. It is in this light that the truly rich character of Japonisme comes forth, since the undesirability, even the impossibility of the attempt to reduce it to a single genre, style, era, or cultural cadre attests to its elusiveness and its Protean nature. Japonisme does not correspond to a single dictionary definition, no matter how subtle or self-aware that definition might be. By situating the dynamics of Japonisme as a response on the part of French culture to the culture of Japan, we gain a keener sense of the multiplicity of modern French sensibility itself, of how the awareness of a nation’s language, history, and art forms can be creatively reflected in the images of a culture seemingly radically different from its own.

Download or read book The Magna Carta Manifesto written by Peter Linebaugh and published by Univ of California Press. This book was released on 2009-06 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: History.

Download or read book Grid Converters for Photovoltaic and Wind Power Systems written by Remus Teodorescu and published by John Wiley & Sons. This book was released on 2011-07-28 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grid converters are the key player in renewable energy integration. The high penetration of renewable energy systems is calling for new more stringent grid requirements. As a consequence, the grid converters should be able to exhibit advanced functions like: dynamic control of active and reactive power, operation within a wide range of voltage and frequency, voltage ride-through capability, reactive current injection during faults, grid services support. This book explains the topologies, modulation and control of grid converters for both photovoltaic and wind power applications. In addition to power electronics, this book focuses on the specific applications in photovoltaic wind power systems where grid condition is an essential factor. With a review of the most recent grid requirements for photovoltaic and wind power systems, the book discusses these other relevant issues: modern grid inverter topologies for photovoltaic and wind turbines islanding detection methods for photovoltaic systems synchronization techniques based on second order generalized integrators (SOGI) advanced synchronization techniques with robust operation under grid unbalance condition grid filter design and active damping techniques power control under grid fault conditions, considering both positive and negative sequences Grid Converters for Photovoltaic and Wind Power Systems is intended as a coursebook for graduated students with a background in electrical engineering and also for professionals in the evolving renewable energy industry. For people from academia interested in adopting the course, a set of slides is available for download from the website. www.wiley.com/go/grid_converters

Download or read book Methanol Synthesis written by Jerzy Skrzypek and published by . This book was released on 1994 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Flower Confidential written by Amy Stewart and published by Algonquin Books. This book was released on 2008-03-18 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: A globe-trotting, behind-the-scenes look at the dazzling world of flowers and the fascinating industry it has created. Award-winning author Amy Stewart takes readers on an around-the-world, behind-the-scenes look at the flower industry and how it has sought—for better or worse—to achieve perfection. She tracks down the hybridizers, geneticists, farmers, and florists working to invent, manufacture, and sell flowers that are bigger, brighter, and sturdier than anything nature can provide. There's a scientist intent on developing the first genetically modified blue rose; an eccentric horticultural legend who created the most popular lily; a breeder of gerberas of every color imaginable; and an Ecuadorean farmer growing exquisite roses, the floral equivalent of a Tiffany diamond. And, at every turn she discovers the startling intersection of nature and technology, of sentiment and commerce.

Download or read book The Urban Climatic Map written by Edward Ng and published by Routledge. This book was released on 2015-09-07 with total page 543 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapid urbanization, higher density and more compact cities have brought about a new science of urban climatology. An understanding of the mapping of this phenomenon is crucial for urban planners. The book brings together experts in the field of Urban Climatic Mapping to provide the state of the art understanding on how urban climatic knowledge can be made available and utilized by urban planners. The book contains the technology, methodology, and various focuses and approaches of urban climatic map making. It illustrates this understanding with examples and case studies from around the world, and it explains how urban climatic information can be analysed, interpreted and applied in urban planning. The book attempts to bridge the gap between the science of urban climatology and the practice of urban planning. It provides a useful one-stop reference for postgraduates, academics and urban climatologists wishing to better understand the needs for urban climatic knowledge in city planning; and urban planners and policy makers interested in applying the knowledge to design future sustainable cities and quality urban spaces.

Download or read book Internal Marketing written by Pervaiz K. Ahmed and published by Routledge. This book was released on 2013-06-17 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: A clear-sighted introduction to a complex subject, 'Internal Marketing' provides the reader with a succinct overview of the most recent thinking and practice. The text begins by defining what internal marketing is and how it can work, and from this foundation: * Outlines state-of-the-art thinking and practice * Demonstrates how internal marketing can be used to facilitate such diverse strategies as TQM, New Product Development and Change Management * Highlights the techniques managers need to understand to use IM effectively within their organizations * Contains a range of international and up to the minute examples and cases of best practice from companies around the world Throughout the book the emphasis is on understanding the principles that have made internal marketing such a potent force within leading corporations. This is combined with a pragmatic assessment of the many challenges involved in making it a reality within an organization.

Download or read book Future Powertrain Technologies written by Stephan Rinderknecht and published by MDPI. This book was released on 2020-12-17 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Among the various factors greatly influencing the development process of future powertrain technologies, the trends in climate change and digitalization are of huge public interest. To handle these trends, new disruptive technologies are integrated into the development process. They open up space for diverse research which is distributed over the entire vehicle design process. This book contains recent research articles which incorporate results for selecting and designing powertrain topology in consideration of the vehicle operating strategy as well as results for handling the reliability of new powertrain components. The field of investigation spans from the identification of ecologically optimal transformation of the existent vehicle fleet to the development of machine learning-based operating strategies and the comparison of complex hybrid electric vehicle topologies to reduce CO2 emissions.

Download or read book Caravaggio written by Sybille Ebert-Schifferer and published by Getty Publications. This book was released on 2012-06-05 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: The young Michelangelo Merisi da Caravaggio (1571–1610) created a major stir in late-sixteenth-century Rome with the groundbreaking naturalism and highly charged emotionalism of his paintings. One might think, given the vast number of books that have been written about him, that everything that could possibly be said about the artist has been said. However, the author of this book argues, it is important to take a fresh look at the often repeated and widely accepted narratives about the artist’s life and work. Sybille Ebert-Schifferer subjects the available sources to a critical reevaluation, uncovering evidence that the efforts of Caravaggio’s contemporaries to disparage his character and his artwork often sprang from their own cultural biases or a desire to promote the artistic achievements of his rivals. Contrary to repeated claims in the literature, the painter lacked neither education nor piety, but was an extremely accomplished technician who developed a successful marketing strategy. He enjoyed great respect and earned high fees from his prestigious clients while he also inspired a large circle of imitators. Even his brushes with the law conformed to the behavioral norms of the aristocratic Romans he sought to emulate. The beautiful reproductions of Caravaggio’s paintings in this volume make clear why he captivated the imagination of his contemporaries, a reaction that echoes today in the ongoing popularity of his work and the fierce debate that it continues to provoke among art historians.

Download or read book The Embodied Icon written by Warren T. Woodfin and published by Oxford University Press. This book was released on 2012-01-19 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Originally presented as the author's thesis (doctoral)--University of Illinois at Urbana-Champaign, 2002.

Download or read book Smart Metering Design and Applications written by K.S.K Weranga and published by Springer Science & Business Media. This book was released on 2013-10-04 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Taking into account the present day trends and the requirements, this Brief focuses on smart metering of electricity for next generation energy efficiency and conservation. The contents include discussions on the smart metering concepts and existing technologies and systems as well as design and implementation of smart metering schemes together with detailed examples.

Download or read book Fundus Autofluorescence written by Noemi Lois and published by Lippincott Williams & Wilkins. This book was released on 2012-02-13 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: Featuring over 250 illustrations, this detailed full-color textbook provides up-to-date information on the use of fundus autofluorescence imaging in evaluation of retinal disease. Chapters describe the techniques available to image and quantify fundus autofluorescence and the autofluorescence patterns observed in the healthy eye and in various retinal diseases. Emphasis is on the value of fundus autofluorescence as a diagnostic and prognostic tool and its clinical utility in the context of other imaging techniques, such as fluorescein and indocyanine green angiography and optical coherence tomography. Each chapter also discusses the value of fundus autofluorescence in understanding the pathogenesis of the condition, and provides a comprehensive update on all aspects of the condition. A companion Website will offer the fully searchable text and an image bank.

Download or read book Reford Gardens written by Alexander Reford and published by [Saint-Laurent, Quebec] : Fides. This book was released on 2001 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: