Traditionally, speed control of hydrogenerators has been implemented by analog proportional-plus-integral control of speed error. With digital controllers, nonlinear, adaptive control strategies may be implemented to achieve improved systems response. This paper develops a control scheme which responds to perturbations by moving wicket gates at their maximum slew rate. For a simulated 10 percent load rejection, the new controller reduced settling time by over 50 percent as compared to the equal-root-case PI controller. This was achieved while maintaining the same peak overshoot and keeping pressure within design limits. The deadbeat nature of the transient response promises decreased wear on mechanical components while substantially improving overall performance of hydrogenerators.
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April 1987
Research Papers
Maximum-Slew-Rate Control for Hydrogenerators
J. Jaeger,
J. Jaeger
University of Illinois, Department of General Engineering, Urbana, IL 61801
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L. Wozniak, P.E.
L. Wozniak, P.E.
University of Illinois, Department of General Engineering, Urbana, IL 61801
Search for other works by this author on:
J. Jaeger
University of Illinois, Department of General Engineering, Urbana, IL 61801
L. Wozniak, P.E.
University of Illinois, Department of General Engineering, Urbana, IL 61801
J. Eng. Gas Turbines Power. Apr 1987, 109(2): 152-158 (7 pages)
Published Online: April 1, 1987
Article history
Received:
January 8, 1986
Online:
October 15, 2009
Citation
Jaeger, J., and Wozniak, L. (April 1, 1987). "Maximum-Slew-Rate Control for Hydrogenerators." ASME. J. Eng. Gas Turbines Power. April 1987; 109(2): 152–158. https://doi.org/10.1115/1.3240018
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