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TECHNICAL BRIEFS

Modeling a Pneumatic Turbine Speed Control System

[+] Author and Article Information
Eric R. Upchurch

Drilling Engineering Department, Thums Long Beach Company, Long Beach, CA 90801

Hung V. Vu

Department of Mechanical Engineering, California State University, Long Beach, Long Beach, CA 90801

J. Dyn. Sys., Meas., Control 122(1), 222-225 (Jul 11, 1995) (4 pages) doi:10.1115/1.482467 History: Received July 11, 1995

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References

Swiecicki,  I., 1961, “Regulation of a Hydraulic Turbine Calculated by Step-By-Step Method,” ASME J. Basic Eng., 83, pp. 445–455.
Hutarew,  G., 1963, “Tests on Turbine Governing Systems,” Water Power, 15, pp. 243–248.
Parnaby,  J., 1964, “Dynamic and Steady-State Characteristics of a Centrifugal Speed Governor,” The Engineer, 218, pp. 879–881.
Schiott,  H., and Winther,  J., 1965, “Simulation of a Water Turbine on an Analogue Computer,” Water Power, 17, pp. 410–412.
Thorne,  D., and Hill,  E., 1975, “Extensions of Stability Boundaries of a Hydraulic Turbine Generating Unit,” IEEE Trans. Power Appar. Syst., PAS-94, pp. 1401–1409.
Hagihara,  S., Yokota,  H., Goda,  K., and Isobe,  K., 1979, “Stability of a Hydraulic Turbine Generating Unit Controlled by P.I.D. Governor,” IEEE Trans. Power Appar. Syst., PAS-98, pp. 2294–2298.
Sanathanan,  C., 1986, “Double Loop Control of a Hydro Turbine Unit,” Int. Water Power Dam Construction, 38, pp. 25–27.
Upchurch, E., 1994, “Determining the Stability of a Pneumatic Turbine Speed Control System Using a Mechanistic Model,” MS thesis, California State University, Long Beach, Long Beach, CA.
Deshpande, M., and Kar, S., 1981, “Theoretical Prediction of Characteristics of Certain Flow Control Valves Used in Hydraulic and Pneumatic Systems,” Proceedings of the IFAC Symposium on Pneumatic and Hydraulic Components and Instruments in Automatic Control, May 20–23, 1980, Warsaw, Poland, Pergamon Press, New York.
Benedict,  R., and Wyler,  J., 1974, “A Generalized Discharge Coefficient for Differential Pressure Type Fluid Meters,” ASME J. Eng. Power, 96, pp. 440–448.

Figures

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Schematic of speed control system-turbine-hydraulic pump network
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Governor at steady-state speed
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Acceleration controller
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Model performance curves when both the transient control orifice and the control valve orifice are installed (Design #1)
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Model performance curves when the control valve orifice is installed but the transient control orifice is not (Design #2)
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Model performance curves when neither the transient control orifice nor the control valve orifice is installed (Design #3)

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