Active Power Control of the Francis Turbine System by Model-Free Adaptive Controller

Abstract

Velocity diagram based Francis turbine model has been utilized for studying the system dynamics. The nonlinear model has been customized for the dynamics of a hydropower installation. In the formulation of the design model, a loss model has been proposed with the existing theoretical practices. Turbine parameters have been used based on the identified data from the open-loop response of the existing experimental result. For controlling the runner speed, a numerical simulation with speed and power combined control has been carried out. Adaptive fuzzy-PID controller has been used for active power and speed control of the turbine system. Controller performance has been compared with the conventional PID controller for ramp power demand. Proposed controller’s performance is found quite satisfactory.