Last edited by Kajitilar
Wednesday, July 15, 2020 | History

1 edition of Converter Applications and their Influence on Large Electrical Machines found in the catalog.

Converter Applications and their Influence on Large Electrical Machines

by Oliver Drubel

  • 346 Want to read
  • 20 Currently reading

Published by Springer Berlin Heidelberg, Imprint: Springer in Berlin, Heidelberg .
Written in English

    Subjects:
  • Renewable and Green Energy,
  • Engineering,
  • Production of electric energy or power,
  • Electrical Machines and Networks Power Electronics,
  • Renewable energy sources,
  • Energy Efficiency (incl. Buildings),
  • Computational intelligence

  • About the Edition

    Converter driven applications are applied in more and more processes. Almost any installed wind-farm, ship drives, steel mills, several boiler feed water pumps, extruder and many other applications operate much more efficient and economic in case of variable speed solutions. The boundary conditions for a motor or generator will change, if it is supplied by a converter. An electrical machine, which is operated by a converter, can no longer be regarded as an independent component, but is embedded in a system consisting of converter and machine.

    This book gives an overview of existing converter designs for large electrical machines. Methods for the appropriate calculation of machine phenomena, which are implied by converters are derived in the power range above 500kVA. It is shown how due to the converter inherent higher voltage harmonics and pulse frequencies special phenomena are caused inside the machine which can be the reason for malfunction. It is demonstrated that additional losses create additional temperature increases or voltage peaks. The book describes how torque ripple can occur, which endanger the mechanical shaft system and last but not least shaft voltages are induced, which are sometimes sufficient in amplitude to damage bearings or to disturb sensors of the protection arrangements.

    Edition Notes

    Statementby Oliver Drubel
    SeriesLecture Notes in Electrical Engineering -- 232
    ContributionsSpringerLink (Online service)
    Classifications
    LC ClassificationsTK7881.15
    The Physical Object
    Format[electronic resource] /
    PaginationX, 190 p. 113 illus.
    Number of Pages190
    ID Numbers
    Open LibraryOL27027345M
    ISBN 109783642362828

    The Principle of Speed Control. From the above figure, the voltage equation of a simple DC motor is V = Eb + IaRa V is the supplied voltage, Eb is the back EMF, Ia is the armature current, and Ra is the armature resistance.   A three phase induction motor is basically a constant speed motor so it’s somewhat difficult to control its speed. The speed control of induction motor is done at the cost of decrease in efficiency and low electrical power discussing the methods to control the speed of three phase induction motor one should know the basic formulas of speed and torque of three phase .

    A transformer does not require any moving parts to transfer energy. This means that there are no friction or windage losses associated with other electrical machines. However, transformers do suffer from other types of losses called “copper losses” and “iron losses” but generally these are quite small. IEEE membership offers access to technical innovation, cutting-edge information, networking opportunities, and exclusive member benefits. Members support IEEE's mission to advance technology for humanity and the profession, while memberships build a platform to introduce careers in technology to students around the world.

    There are two other associated problems: (3) the continuing advocating of a seriously flawed energy flow theory and electrical power system theory, and (4) the influence of very large international energy cartels with deeply vested economic commitment to the present course of power system research, development, and engineering. View Bijen Shrestha’s profile on LinkedIn, the world's largest professional community. Bijen has 3 jobs listed on their profile. See the complete profile on LinkedIn and Title: Data Center Global Electrical .


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Converter Applications and their Influence on Large Electrical Machines by Oliver Drubel Download PDF EPUB FB2

An electrical machine, which is operated by a converter, can no longer be regarded as an independent component, but is embedded in a system consisting of converter and machine. This book gives an overview of existing converter designs for large electrical : Springer-Verlag Berlin Heidelberg. Books shelved as power-engineering: Transformer and Inductor Design Handbook, Fourth Edition by Colonel Wm.

McLyman, Power Transformers: Principles an. Control of Power Electronic Converters, Volume Two gives the theory behind power electronic converter control and discusses the operation, modelling and control of basic converters.

The main components of power electronics systems that produce a desired effect (energy conversion, robot motion, etc.) by controlling system variables (voltages and. Control in Power Electronics and Electrical Drives contains the proceedings of the Second International Federation of Automatic Control Symposium held in Düsseldorf, Germany, on OctoberThe symposium provided a forum for discussing the effects of converter control on the design of.

In one complete volume, this essential reference presents an in-depth overview of the theoretical principles and techniques of electrical machine design. This timely new edition offers up-to-date theory and guidelines - Selection from Design of Rotating Electrical Machines, 2nd Edition [Book].

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The text describes a variety of practical and emerging power electronic converters made feasible by the new generation of power Cited by: An electrostatic generator, or electrostatic machine, is an electromechanical generator that produces static electricity, or electricity at high voltage and low continuous knowledge of static electricity dates back to the earliest civilizations, but for millennia it remained merely an interesting and mystifying phenomenon, without a theory to explain its behavior and often confused.

prevent the influence of ingress, dust, dirt, and damp (Figure ). Aluminum frames offer special corrosion protection. Bearing grease relief allows for greasing the motor while it is running. Induction machines are extensively used for wind turbines up to kW per unit and more.

A typical dual winding (speed) induction generator with cage. In electrical engineering, electric machine is a general term for machines using electromagnetic forces, such as electric motors, electric generators, and are electromechanical energy converters: an electric motor converts electricity to mechanical power while an electric generator converts mechanical power to electricity.

The moving parts in a machine can be rotating (rotating. Books at Amazon. The Books homepage helps you explore Earth's Biggest Bookstore without ever leaving the comfort of your couch.

Here you'll find current best sellers in books, new releases in books, deals in books, Kindle eBooks, Audible audiobooks, and so much more. Most generator applications require some way controlling the output voltage and in the case of AC machines a method of controlling the frequency.

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In most countries, commercial power is made available via nationwide. l For stationary electrical machines: - g/cm2 ( - psi) l For electrical machines under heavy vibration (e.g. traction motors): - g/cm2 ( - psi) Equal spring pressure must be maintained for all carbon brushes to ensure a good current distribution.

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However, for applications in transformers and motors, soft magnets that can rapidly switch their magnetization in response to a magnetic field are used.

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