Control of Surge in Centrifugal Compressors by Active Magnetic Bearings

Control of Surge in Centrifugal Compressors by Active Magnetic Bearings PDF Author: Se Young Yoon
Publisher: Springer Science & Business Media
ISBN: 1447142403
Category : Technology & Engineering
Languages : en
Pages : 292

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Book Description
Surge Control of Active-magnetic-bearing-suspended Centrifugal Compressors sets out the fundamentals of integrating active magnetic bearing (AMB) rotor suspension technology in compressor systems, and describes how this relatively new bearing technology can be employed in active control of compressor surge initiation. The authors provide a self-contained and comprehensive review of rotordynamics and the fundamentals of AMB technology. The active stabilization of compressor surge employing AMBs in a machine is fully explored, from modeling of instability and controller design, to the implementation and experimental testing of the control algorithm in a specially-constructed, industrial-size centrifugal compression system. The results of these tests demonstrate the great potential of the new surge control method suggested in this text. This book will be useful for engineers in industries that involve turbocompressors and magnetic bearings, as well as for researchers and graduate students in the field of applied control. Whatever their level of experience, engineers working in the fields of turbomachinery, magnetic bearings, rotordynamics and controls will find the material in this book absorbing as all these important aspects of engineering are integrated to create a multi-disciplinary solution to a real-life industrial problem and the book is a suitable introduction to the area for newcomers.

Control of Surge in Centrifugal Compressors by Active Magnetic Bearings

Control of Surge in Centrifugal Compressors by Active Magnetic Bearings PDF Author: Se Young Yoon
Publisher: Springer Science & Business Media
ISBN: 1447142403
Category : Technology & Engineering
Languages : en
Pages : 292

Get Book Here

Book Description
Surge Control of Active-magnetic-bearing-suspended Centrifugal Compressors sets out the fundamentals of integrating active magnetic bearing (AMB) rotor suspension technology in compressor systems, and describes how this relatively new bearing technology can be employed in active control of compressor surge initiation. The authors provide a self-contained and comprehensive review of rotordynamics and the fundamentals of AMB technology. The active stabilization of compressor surge employing AMBs in a machine is fully explored, from modeling of instability and controller design, to the implementation and experimental testing of the control algorithm in a specially-constructed, industrial-size centrifugal compression system. The results of these tests demonstrate the great potential of the new surge control method suggested in this text. This book will be useful for engineers in industries that involve turbocompressors and magnetic bearings, as well as for researchers and graduate students in the field of applied control. Whatever their level of experience, engineers working in the fields of turbomachinery, magnetic bearings, rotordynamics and controls will find the material in this book absorbing as all these important aspects of engineering are integrated to create a multi-disciplinary solution to a real-life industrial problem and the book is a suitable introduction to the area for newcomers.

Rotating Machinery, Vibro-Acoustics & Laser Vibrometry, Volume 7

Rotating Machinery, Vibro-Acoustics & Laser Vibrometry, Volume 7 PDF Author: Dario Di Maio
Publisher: Springer
ISBN: 3319746936
Category : Technology & Engineering
Languages : en
Pages : 239

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Book Description
Rotating Machinery, Vibro-Acoustics & Laser Vibrometry, Volume 7: Proceedings of the 36th IMAC, A Conference and Exposition on Structural Dynamics, 2018, the seveth volume of nine from the Conference brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of Rotating Machinery, Hybrid Testing, Vibro-Acoustics & Laser Vibrometry, including papers on: Rotating Machinery Vibro-Acoustics Experimental Techniques Scanning Laser Doppler Vibrometry Methods

Control of Surge in Centrifugal Compressors by Active Magnetic Bearings

Control of Surge in Centrifugal Compressors by Active Magnetic Bearings PDF Author: Kin Tien Lim
Publisher:
ISBN: 9781788023443
Category :
Languages : en
Pages : 300

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Book Description


Rotating Machinery Research and Development Test Rigs

Rotating Machinery Research and Development Test Rigs PDF Author: Maurice L. Adams
Publisher: CRC Press
ISBN: 1138032425
Category : Technology & Engineering
Languages : en
Pages : 218

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Book Description
Rotating Machinery Research and Development Test Rigs presents the purpose and development processes for test apparatuses built for Research & Development in machinery technology and product development. Each R & D apparatus is the focus of an entire chapter, with fifteen detailed case studies included from mechanical, aerospace, chemical and biomedical engineering. Specific machinery components covered include bearings, seals, power plant pumps, rotors, turbines and compressors. Machinery condition monitoring and product development processes have been integrated. The specific purpose and results for each test rig are comprehensively presented and explained.

Magnetic Bearings

Magnetic Bearings PDF Author: Gerhard Schweitzer
Publisher: Springer Science & Business Media
ISBN: 3642004970
Category : Technology & Engineering
Languages : en
Pages : 541

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Book Description
Compiling the expertise of nine pioneers of the field, Magnetic Bearings - Theory, Design, and Application to Rotating Machinery offers an encyclopedic study of this rapidly emerging field with a balanced blend of commercial and academic perspectives. Every element of the technology is examined in detail, beginning at the component level and proceeding through a thorough exposition of the design and performance of these systems. The book is organized in a logical fashion, starting with an overview of the technology and a survey of the range of applications. A background chapter then explains the central concepts of active magnetic bearings while avoiding a morass of technical details. From here, the reader continues to a meticulous, state-of-the-art exposition of the component technologies and the manner in which they are assembled to form the AMB/rotor system. These system models and performance objectives are then tied together through extensive discussions of control methods for both rigid and flexible rotors, including consideration of the problem of system dynamics identification. Supporting this, the issues of system reliability and fault management are discussed from several useful and complementary perspectives. At the end of the book, numerous special concepts and systems, including micro-scale bearings, self-bearing motors, and self-sensing bearings, are put forth as promising directions for new research and development. Newcomers to the field will find the material highly accessible while veteran practitioners will be impressed by the level of technical detail that emerges from a combination of sophisticated analysis and insights gleaned from many collective years of practical experience. An exhaustive, self-contained text on active magnetic bearing technology, this book should be a core reference for anyone seeking to understand or develop systems using magnetic bearings.

Nonlinear Control Systems

Nonlinear Control Systems PDF Author: Horacio Márquez
Publisher: Wiley-Interscience
ISBN: 9780471427995
Category : Science
Languages : en
Pages : 376

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Book Description
Provides complete coverage of both the Lyapunov and Input-Output stability theories, ina readable, concise manner. * Supplies an introduction to the popular backstepping approach to nonlinear control design * Gives a thorough discussion of the concept of input-to-state stability * Includes a discussion of the fundamentals of feedback linearization and related results. * Details complete coverage of the fundamentals of dissipative system's theory and its application in the so-called L2gain control prooblem, for the first time in an introductory level textbook. * Contains a thorough discussion of nonlinear observers, a very important problem, not commonly encountered in textbooksat this level. *An Instructor's Manual presenting detailed solutions to all the problems in the book is available from the Wiley editorial department.

Compressor Surge and Rotating Stall

Compressor Surge and Rotating Stall PDF Author: Jan Tommy Gravdahl
Publisher: Springer Science & Business Media
ISBN: 1447108272
Category : Technology & Engineering
Languages : en
Pages : 233

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Book Description
The series Advances in Industrial Control aims to report and encourage technology transfer in control engineering. The rapid development of control technology impacts all areas of the control discipline. New theory, new controllers, actuators, sensors, new industrial processes, computer methods, new applications, new philosophies . . . , new challenges. Much of this development work resides in industrial reports, feasibility study papers and the reports of advanced collaborative projects. The series offers an opportunity for researchers to present an extended exposition of such new work in all aspects of industrial control for wider and rapid dissemination. Operating plant as close as possible to constraint boundaries so often brings economic benefits in industrial process control. This is the conundrum at the heart of this monograph by Tommy Gravdahl and Olav Egeland on stall control for compressors. Operation of the compressor closer to the surge line can increase operational efficiency and flexibility The approach taken by the authors follows the modern control system paradigm: -physical understanding, detailed modelling and simulation studies and finally control studies. The thoroughness of the presentation, bibliography and appendices indicates that the volume has all the hallmarks of being a classic for its subject. Despite the monograph's narrow technical content, the techniques and insights presented should appeal to the wider industrial control community as well as the gas turbine/compressor specialist. M. J. Grimble and M. A.

Radial Flow Turbocompressors

Radial Flow Turbocompressors PDF Author: Michael Casey
Publisher: Cambridge University Press
ISBN: 1108416675
Category : Science
Languages : en
Pages : 789

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Book Description
An introduction to the theory and engineering practice that underpins the component design and analysis of radial flow turbocompressors. Drawing upon an extensive theoretical background and years of practical experience, the authors provide descriptions of applications, concepts, component design, analysis tools, performance maps, flow stability, and structural integrity, with illustrative examples. Features wide coverage of all types of radial compressor over many applications unified by the consistent use of dimensional analysis. Discusses the methods needed to analyse the performance, flow, and mechanical integrity that underpin the design of efficient centrifugal compressors with good flow range and stability. Includes explanation of the design of all radial compressor components, including inlet guide vanes, impellers, diffusers, volutes, return channels, de-swirl vanes and side-streams. Suitable as a reference for advanced students of turbomachinery, and a perfect tool for practising mechanical and aerospace engineers already within the field and those just entering it.

Compressors

Compressors PDF Author: Royce N. Brown
Publisher: Elsevier
ISBN: 0080476651
Category : Technology & Engineering
Languages : en
Pages : 637

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Book Description
This practical reference provides in-depth information required to understand and properly estimate compressor capabilities and to select the proper designs. Engineers and students will gain a thorough understanding of compression principles, equipment, applications, selection, sizing, installation, and maintenance. The many examples clearly illustrate key aspects to help readers understand the "real world" of compressor technology.Compressors: Selection and Sizing, third edition is completely updated with new API standards. Additions requested by readers include a new section on diaphragm compressors in the reciprocating compressors chapter, and a new section on rotor dynamics stability in the chapter on diaphragm compressors.The latest technology is presented in the areas of efficiency, 3-D geometry, electronics, CAD, and the use of plant computers. The critical chapter on negotiating the purchase of a compressor now reflects current industry practices for preparing detailed specifications, bid evaluations, engineering reviews, and installation. A key chapter compares the reliability of various types of compressors.*Everything you need to select the right compressor for your specific application.*Practical information on compression principles, equipment, applications, selection, sizing, installation, and maintenance.*New sections on diaphragm compressors and an introduction to rotor dynamics stability.

1. Forsthoffer's Rotating Equipment Handbooks

1. Forsthoffer's Rotating Equipment Handbooks PDF Author: William E. Forsthoffer
Publisher: Elsevier
ISBN: 0080949320
Category : Technology & Engineering
Languages : en
Pages : 529

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Book Description
'Fundamentals of Rotating Equipment' is an overview of the main types of rotating machinery in industry, and covers such aspects as system dynamics, surge control, vibration and balancing, radial bearing design, performance parameters, rotor system design and operation, rotor axial (thrust) forces, performance objectives and mechanical restraints, auxiliary systems and seals. This book will enhance rotating equipment reliability and safety throughout the many industries where such equipment is vital to a successful business. Over recent years there have been substantial changes in those industries which are concerned with the design, purchase and use of special purpose (ie critical, high-revenue) rotating equipment. Key personnel have been the victims of early retirement or have moved to other industries: contractors and end-users have reduced their technical staff and consequently have to learn complex material ‘from scratch’. As a result, many companies are finding that they are devoting unnecessary man hours to the discovery and explanation of basic principles, and having to explain these to clients who should already be aware of them. In addition, the lack of understanding by contractors and users of equipment characteristics and operating systems often results in a ‘wrong fit’ and a costly reliability problem. The stakes can be high, and it against this background that this book has been published. It is the outcome of many years experience and is based on well-honed teaching material which is easily readable, understandable and actually enjoyable! This is a five volume set. The volumes are: 1. Fundamentals of Rotating Equipment 2. Pumps 3. Compressors 4. Auxiliary Systems 5. Reliability Optimization thru Component Condition Monitoring and Root Cause Analysis * A distillation of many years of on-site training by a well-known US Engineer who also operates in the Middle East. * A Practical book written in a succinct style and well illustrated throughout. * An overview of the main types of rotating machinery in industry.