Modelling–based approach for digital control design for nonlinear WECS in the power system

摘要: The case has been established that the wind power plant must be treated as an integral part of electric system, thereby constituting energy conversion system. Recent advancement in size and technology turbines requires sophisticated control systems to effectively optimize enhance grid integration. As a first step toward controller design, modelling become prerequisite. This paper explores design based on speed stochastic process, turbine multi-mass system with soft shaft linking doubly fed induction generator. A strategy incorporating linear quadratic Gaussian (LQG) relies state estimation for full-state feedback is proposed augment generator torque control. objectives are reduce stresses drivetrain ensure operation geared optimal conversion. study focuses above-rated speeds, LQG's main purpose add damping drivetrain, minimizing cyclic fatigue, while pitch mechanism prevents rotor overspeed, maintaining rated power. Simulations show efficacy paradigm meeting objectives. Copyright © 2009 John Wiley & Sons, Ltd.