文档介绍：Journal of Wind Engineering
and Industrial Aerodynamics 85 (2000) 293}308
Variable speed control of wind turbines using
nonlinear and adaptive algorithms
. Song!*, B. Dhinakaran!, . Bao"
!Department of Electrical Engineering, North Carolina A&T State University, Greensboro, NC7411, USA
"Department of Electrical Engineering, University of Virginia, Charlottesville, VA 22903, USA
Abstract
Automatic control represents one of the most important factors responsible for the e$ciency
and reliability of wind power conversion systems. Thus far, only a few isolated applications of
conventional control to wind power systems have appeared in the literature. To make wind
power generation truly cost-e!ective and reliable, advanced control techniques are imperative.
In this paper we develop a control scheme for wind turbine using nonlinear and adaptive
control theory. Based on both mechanical and electrical dynamics, nonlinear and adaptive
control algorithms are derived to on-line adjust the excitation winding voltage of the generator.
This method is shown to be able to achieve smooth and asymptotic rotor speed tracking, as
justi"ed by both analysis puter simulation. ( 2000 Elsevier Science Ltd. All rights
reserved.
Keywords: Wind turbine; Variable speed control; Adaptive control; Nonlinear control; Stability
1. Introduction
Several key areas of research in control of wind turbines have been identi"ed during
the recent workshop held at Santa Clara University [1]. Of particular interest to wind
power industry is the development of innovative control algorithms for smoother and
more ezcient operation of wind power generation systems. Traditionally, most wind
turbines operate at "xed speeds except when starting and stopping [2]. Fixed-speed
operation means that the maximum coe$cient of performance is available only at
a particular wind speed. A low coe$cient of performance is observed for all other
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