Elektrische Antriebe Im Maschinenbau Energieeffizienz Sanftlauf Drehzahlvariable Und Synchrone Steuerungen
DOWNLOAD
Download Elektrische Antriebe Im Maschinenbau Energieeffizienz Sanftlauf Drehzahlvariable Und Synchrone Steuerungen PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Elektrische Antriebe Im Maschinenbau Energieeffizienz Sanftlauf Drehzahlvariable Und Synchrone Steuerungen book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Elektrische Antriebe Im Maschinenbau
DOWNLOAD
Author : Ayhan Uzun
language : de
Publisher: diplom.de
Release Date : 2014-04-11
Elektrische Antriebe Im Maschinenbau written by Ayhan Uzun and has been published by diplom.de this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-04-11 with Technology & Engineering categories.
Inhaltsangabe:Einleitung: Elektrische Antriebe sind heute wichtige und bestimmende Komponenten vieler Maschinen und Anlagen. Dabei teilen sich die Antriebe in verschiedene Varianten auf. Zu einem hohen Prozentsatz (80%) sind es einfache Antriebe mit festen Betriebsdrehzahlen. Immer häufiger nehmen jedoch die anspruchsvolleren Antriebe zu, die in weiten Bereichen drehzahlvariabel arbeiten. Der Markt fordert kostengünstige, robuste und wartungsarme Lösungen. Dadurch wurde der bewährte Gleichstromantrieb bei Neukonstruktionen im betrachteten Leistungsbereich zu Gunsten des Drehstromantriebs weitgehend verdrängt. Dies zeigen die Prozentzahlen des Diagramms in Bild 1.1 sehr deutlich. Betrachtet man die Verteilung der Stückzahlen auf die Leistungsklassen, die die statistische Erfassung des ZVEI vorgibt, so erkennt man, dass die großen Stückzahlen im Leistungsbereich von 750 W; 7,5 kW liegen. Weitere Untersuchungen haben ergeben, dass 93% der Antriebe in die Leistungsklasse bis 7,5 kW und ca. nur 0,6% in die über 75 kW einzuordnen sind. Aus diesem Grund beschränken sich die Ausführungen weitgehend auf den oben genannten Leistungsbereich mit den hohen Stückzahlen. Um die vielfältigen Antriebsaufgaben zu erfüllen, werden 4 Arten von elektrischen Antrieben eingesetzt: - direkt geschaltete Antriebe mit festen Betriebsdrehzahlen (Festdrehzahlantriebe). - solche mit überwiegend festen Betriebsdrehzahlen, die zum Anlassen über Schalter oder Schütze sowie oft über Vorschaltelemente geschaltet werden. - solche, die sanft starten und stillsetzen sowie solche mit überwiegend variablen Betriebsdrehzahlen, die zum Anlauf oder im Betrieb über elektronische Stellglieder gestellt oder geregelt betrieben werden. Inhaltsverzeichnis:Inhaltsverzeichnis: 1.Grundlagen der Asynchronmaschinen1 1.1Stand der Technik und Marktsituation1 1.2Wirkungsweise und Aufbau5 1.2.1Bauarten6 1.2.1.1Kurzschlussläufer6 1.2.1.2Schleifringläufer7 1.2.2Bauformen8 1.2.3Motorkonfigurationen9 1.2.3.1Bremsmotoren10 1.2.3.2Getriebemotoren10 1.2.3.3Umrichtermotoren11 1.2.3.4Asynchron-Servomotoren11 1.2.4Baugrößen (Achshöhe und Baulänge12 1.3Motorkühlung und Motorschutz14 1.3.1Motorschutz14 1.3.2Schutzart14 1.4Betriebsverhalten und Kenngrößen15 1.4.1Drehzahl und Schlupf15 1.4.2Drehmoment15 1.4.3Leistung16 1.4.4Verluste und Wirkungsgrad18 1.5Herstellerneutrale Motortabelle19 1.5.1Normen19 1.5.1.1Normzahlen19 1.5.1.2Toleranzen19 1.5.2Herstellerneutrale Tabelle für [...]
Elektrische Antriebe Im Maschinenbau Energieeffizienz Sanftlauf Drehzahlvariable Und Synchrone Steuerungen
DOWNLOAD
Author : Ayhan Uzun
language : de
Publisher:
Release Date : 2008
Elektrische Antriebe Im Maschinenbau Energieeffizienz Sanftlauf Drehzahlvariable Und Synchrone Steuerungen written by Ayhan Uzun and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Mobile Working Machines
DOWNLOAD
Author : Marcus Geimer
language : en
Publisher: SAE International
Release Date : 2020-12-31
Mobile Working Machines written by Marcus Geimer and has been published by SAE International this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-12-31 with Technology & Engineering categories.
Mobile Working Machines are defined by three characteristics. These machines have a cer-tain task of doing a working process, they are mobile, and they have a signifi cant energy share in their working functions. The machines should be as productive, efficient and of high quality as possible. All these machines in the fi eld of agriculture, forestry, construction, logistics, municipal sector, and in other special applications work in different applications. But, many technologies placed in the machines are the same, similar or comparable; therefore, different branches can learn from each other. Mobile Working Machines provides a wide and deep view into the technologies used in these machines. Appropriate for new engineers as well as those who wish to increase their knowledge in this field, this book brings together all the latest research and development into one place.
Handbook Of Diesel Engines
DOWNLOAD
Author : Klaus Mollenhauer
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-06-22
Handbook Of Diesel Engines written by Klaus Mollenhauer and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-06-22 with Technology & Engineering categories.
This machine is destined to completely revolutionize cylinder diesel engine up through large low speed t- engine engineering and replace everything that exists. stroke diesel engines. An appendix lists the most (From Rudolf Diesel’s letter of October 2, 1892 to the important standards and regulations for diesel engines. publisher Julius Springer. ) Further development of diesel engines as economiz- Although Diesel’s stated goal has never been fully ing, clean, powerful and convenient drives for road and achievable of course, the diesel engine indeed revolu- nonroad use has proceeded quite dynamically in the tionized drive systems. This handbook documents the last twenty years in particular. In light of limited oil current state of diesel engine engineering and technol- reserves and the discussion of predicted climate ogy. The impetus to publish a Handbook of Diesel change, development work continues to concentrate Engines grew out of ruminations on Rudolf Diesel’s on reducing fuel consumption and utilizing alternative transformation of his idea for a rational heat engine fuels while keeping exhaust as clean as possible as well into reality more than 100 years ago. Once the patent as further increasing diesel engine power density and was filed in 1892 and work on his engine commenced enhancing operating performance.
World Energy Outlook 2017
DOWNLOAD
Author : Agence internationale de l'énergie
language : en
Publisher:
Release Date : 2018-01-19
World Energy Outlook 2017 written by Agence internationale de l'énergie and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-01-19 with Energy industries categories.
The global energy scene is in a state of flux. Large-scale shifts include: the rapid deployment and steep declines in the costs of major renewable energy technologies; the growing importance of electricity in energy use across the globe; profound changes in China's economy and energy policy, moving consumption away from coal; and the continued surge in shale gas and tight oil production in the United States. These changes provide the backdrop for the World Energy Outlook-2017, which includes a full update of energy demand and supply projections to 2040 based on different scenarios. The projections are accompanied by detailed analyses of their impact on energy industries and investment, as well as implications for energy security and the environment. The report this year includes a focus on China, which examines how China's choices could reshape the global outlook for all fuels and technologies. A second focus, on natural gas, explores how the rise of shale gas and LNG are changing the global gas market as well as the opportunities and risks for gas in the transition to a cleaner energy system. Finally, the WEO-2017 introduces a major new scenario - the Sustainable Development Scenario - that outlines an integrated approach to achieving internationally agreed objectives on climate change, air quality and universal access to modern energy.
Switchgear Manual
DOWNLOAD
Author : Hennig Gremmel
language : en
Publisher:
Release Date : 2007
Switchgear Manual written by Hennig Gremmel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
Consumer Prosumer Prosumager
DOWNLOAD
Author : Fereidoon P. Sioshansi
language : en
Publisher: Academic Press
Release Date : 2019-02-19
Consumer Prosumer Prosumager written by Fereidoon P. Sioshansi and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-02-19 with Business & Economics categories.
Consumers, Prosumers, Prosumagers: How Customer Stratification will Disrupt the Utility Business Model examines customer stratification in the electric power sector, arguing that it is poised to become one of the fundamental drivers of the 21st century power network as distributed energy generation, storage, sharing and trading options become available at scale. The book addresses the interface and the relationship between key players and their impacts on incumbent and disruptive service providers. Topics covered include innovations that lead to consumer stratification, regulatory policy, the potential of service, the speed and spread of stratification, and a review of potential business models and strategies. The work also covers the evolution and potential end-states of electricity service provision, from its basis in current pilot programs as distributed generation scales and its potential to supplant industry norms. Explores the impacts and trajectories of increasing distributed power generation and storage adoption Analyzes the growing number of electricity services and their impact on the existing power grid and service providers, including incumbent and disruptor utilities Discusses future market trends and trends in costs, pricing and business models
Sustainable Logistics
DOWNLOAD
Author : Wolf-Rüdiger Bretzke
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-14
Sustainable Logistics written by Wolf-Rüdiger Bretzke and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-14 with Technology & Engineering categories.
Currently the notion of "sustainability" is used in an inflationary manner. Therefore the authors start with a definition which is stable to serve as an anchor for further research as well as for discussions among scientists, managers and politicians, ideally across different disciplines. The character of this book is purely conceptual. The argumentation is based on comparison of new and demanding requisites with existing models (process and network architectures in the field of logistics). Formerly neglected impacts on the environment will be included. Main features of a new approach will be developed which are capable to avoid these impacts and to align logistics with the requirements of sustainability. In order to make logistics sustainable large parts will have to be reinvented. The focus needs to be on decoupling transportation activities from economic growth rates.
Automating With Profinet
DOWNLOAD
Author : Raimond Pigan
language : en
Publisher: John Wiley & Sons
Release Date : 2015-10-29
Automating With Profinet written by Raimond Pigan and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-10-29 with Science categories.
PROFINET is the first integrated Industrial Ethernet Standard for automation, and utilizes the advantages of Ethernet and TCP/IP for open communication from the corporate management level to the process itself. PROFINET CBA divides distributed, complex applications into autonomous units of manageable size. Existing fieldbuses such as PROFIBUS and AS-Interface can be integrated using so-called proxies. This permits separate and cross-vendor development, testing and commissioning of individual plant sections prior to the integration of the solution as a whole. PROFINET IO, with its particularly fast real-time communication, fulfills all demands currently placed on the transmission of process data and enables easy integration of existing fieldbus systems. Isochronous real-time (IRT) is used for isochronous communication in motion control applications. PROFINET depends on established IT standards for network management and teleservice. Particulary to automation control engineering it offers a special security concept. Special industrial network technology consisting of active network components, cables and connection systems, together with recommendations for installation, complete the concept. This book serves as an introduction to PROFINET technology. Configuring engineers, commissioning engineers and technicians are given an overview of the concept and the fundamentals they need to solve PROFINET-based automation tasks. Technical relationships and practical applications are described using SIMATIC products as example.
The Swiss Political System And Local Government
DOWNLOAD
Author : Michael Sell
language : en
Publisher: GRIN Verlag
Release Date : 2003-11-07
The Swiss Political System And Local Government written by Michael Sell and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-11-07 with Political Science categories.
Seminar paper from the year 2003 in the subject Politics - Region: Western Europe, grade: 1,3 (A), University of Constance (Faculty for Management Studies), course: Comparative Local Government, language: English, abstract: Switzerland is one of the smallest, oldest and most complex democratic federal states. Local political structure is far more important in Switzerland than in the centralized polities of most modern European countries, given the historically decentralized nature of the Swiss system (see Hass, J.K. 1999: 1067). “Thus the Swiss municipal organisation has proved to be extremely stable in comparison to other countries. They strongly vary in size and the majority are very small. Between 1848 and 1998 the number of municipalities was reduced only from 3204 to 2914 “(see Ladner, A. 1991: 5-6). In this paper, the focus will be on the local government in Switzerland. But before we come to this part, we think it is necessary to give an overall view of Switzerland in general and its political system. Here, we will also introduce the issue of direct democracy in Switzerland, as we think it is a characteristic political element within the Swiss democracy and also plays an important role on the communal and local level. Then we will describe the local level in detail. This will include a short summary about the development of the Swiss communes in history, the role of the communes given by the Swiss constitution, the structure and organization of communes and the responsibilities they have. Finally, we will comment our findings and draw conclusions about the grade of decentralization and what follows from this for the Swiss democracy.