Modeling and Bounded Feedback Stabilization of Centrifugal Compressor Surge PDF Download
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Author: Franciscus Petrus Thomas Willems
Publisher:
ISBN: 9789038629315
Category : Compressors
Languages : en
Pages : 106
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Book Description
Author: Franciscus Petrus Thomas Willems
Publisher:
ISBN: 9789038629315
Category : Compressors
Languages : en
Pages : 106
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Book Description
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.
Author: Jonathan Seth Simon
Publisher:
ISBN:
Category : Feedback control systems
Languages : en
Pages : 500
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Book Description
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.
Author:
Publisher:
ISBN:
Category : Automatic control
Languages : en
Pages : 936
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Book Description
Author: J. E. Pinsley
Publisher:
ISBN:
Category : Centrifugal compressors
Languages : en
Pages : 0
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Book Description
Active suppression of centrifugal compressor surge has been demonstrated on a centrifugal compressor equipped with a servo-actuated plenum exit throttle controller. The control scheme is fundamentally different from conventional surge control techniques in that it addresses directly the dynamic behavior of the compression system to displace the surge line to lower mass flows. The method used is to feedback perturbations in plenum pressure rise, in real time, to a fast-acting control valve. The increased aerodynamic damping of incipient oscillations due to the resulting valve motion allows stable operation past the normal surge line. For the compressor used, a 25% reduction in the surge point mass flow was achieved, over a range of speeds and pressure ratios. Time-resolved measurements during controlled operation revealed that the throttle required relatively little power to suppress the surge oscillations, because the disturbances are attacked in their initial stages. Although designed for operation with small disturbances, the controller was also able to eliminate existing, large amplitude, surge oscillations. Comparison of experimental results with theoretical predictions showed that a lumped parameter model appeared adequate to represent the behavior of the compression system with the throttle controller and, perhaps more importantly, to be used in the design of more sophisticated control strategies.
Author: Gregory K. McMillan
Publisher: Momentum Press
ISBN: 1606501739
Category : Technology & Engineering
Languages : en
Pages : 174
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Book Description
Control engineers, mechanical engineers and mechanical technicians will learn how to select the proper control systems for axial and centrifugal compressors for proper throughput and surge control, with a particular emphasis on surge control. Readers will learn to understand the importance of transmitter speed, digital controller sample time, and control valve stroking time in helping to prevent surge. Engineers and technicians will find this book to be a highly valuable guide on compressor control schemes and the importance of mitigating costly and sometimes catastrophic surge problems. It can be used as a self-tutorial guide or in the classroom with the book's helpful end-of-chapter questions and exercises and sections for keeping notes.
Author: Wenfei Li
Publisher:
ISBN:
Category : Axial flow compressors
Languages : en
Pages : 122
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Book Description
Abstract: This thesis discusses the stability and robustness of compressor surge control based on the three-state, nonlinear Moore-Greitzer model by applying the state feedback linearization method. There are two main types of instabilities that severely affect compressor overall performance: surge and rotating stall. The one-dimensional incompressible fluid surge model has been chosen for this study. The state-feedback linearized control input implicitly linearizes the dynamics between the system input (throttle opening), and the system output (the scaled mass-flow coefficient). A linear quadratic regulator was designed to stabilize the feedback linearized system, thus ensuring the stabilization of the surge dynamics in the original nonlinear model. Finally, the disturbance and uncertainty rejection for the closed-loop system was tested using simulation in MATLAB/Simulink.
Author: Rene Van den Braembussche
Publisher: John Wiley & Sons
ISBN: 1119424100
Category : Technology & Engineering
Languages : en
Pages : 606
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Book Description
A comprehensive overview of fluid dynamic models and experimental results that can help solve problems in centrifugal compressors and modern techniques for a more efficient aerodynamic design. Design and Analysis of Centrifugal Compressors isacomprehensive overview of the theoretical fluid dynamic models describing the flow in centrifugal compressors and the modern techniques for the design of more efficient centrifugal compressors. The author — a noted expert in the field, with over 40 years of experience — evaluates relevant numerical and analytical prediction models for centrifugal compressors with special attention to their accuracy and limitations. Relevant knowledge from the last century is linked with new insights obtained from modern CFD. Emphasis is to link the flow structure, performance and stability to the geometry of the different compressor components. Design and Analysis of Centrifugal Compressors is an accessible resource that combines theory with experimental data and previous research with recent developments in computational design and optimization. This important resource Covers the basic information concerning fluid dynamics that are specific for centrifugal compressors and clarifies the differences with axial compressors Provides an overview of performance prediction models previously developed in combination with extra results from research conducted by the author Describes helpful numerical and analytical models for the flow in the different components in relation to flow stability, operating range and performance Includes the fundamental information for the aerodynamic design of more efficient centrifugal compressors Explains the use of computational fluid dynamics (CFD) for the design and analysis of centrifugal compressors Written for engineers, researchers and designers in industry as well as for academics specializing in the field, Design and Analysis of Centrifugal Compressors offers an up to date overview of the information needed for the design of more effective centrifugal compressors.
Author:
Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages : 436
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Book Description
