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A k-step predictive scheme for speed control of diesel driven power plants

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3 Author(s)
S. Roy ; Dept. of Electr. Eng., Indian Inst. of Technol., Bombay, India ; O. P. Malik ; G. S. Hope

An adaptive speed control scheme for diesel prime movers is presented. Diesel prime movers are characterized by nonlinear, time-varying parameters including a nonlinear input dead-time variation that introduces an unknown delay between the injection of fuel and the production of engine torque. Such plants are difficult to control by conventional proportional-integral (PI) controllers. It is shown that by assuming the existence of an additional system time constant, an explicit estimate of the plant parameters and dead-time may be obtained. The algorithm converges rapidly. The resulting predictor can be used to set up a k-step ahead predictive controller. Studies that compare the performance of the adaptive scheme to that of a fixed, tuned, PI controller are presented. The algorithm is shown to be flexible enough to operate under a wide range of droop settings and is equally applicable to various operating conditions

Published in:

IEEE Transactions on Industry Applications  (Volume:29 ,  Issue: 2 )