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风力发电机叶片设计及启动分析(英文版)20.pdf

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文档介绍:Energy 24 (1999) 9–20
One-step-ahead adaptive control of a wind-driven,
synchronous generator system
L. Dambrosio*, B. Fortunato
Istituto di hine ed Energetica, ico di Bari, Via Re David 200, Bari 70125, Italy
Received 20 March 1998
Abstract
Control of a wind power plant as an isolated power source is analyzed. The plant consists of a wind
turbine (connected by means of a gear box to a three-phase synchronous electric generator) and a control
system. Mathematical models of the wind turbine and electrical generator have been proposed. The one-
step-ahead adaptive control technique has been adopted to govern the system. Results of a control test case
are shown in order to demonstrate the reliability of the proposed control technique.  1998 Elsevier Science
Ltd. All rights reserved.
1. Introduction
Wind power plants are generally used to convert wind energy into electrical energy. These
plants consist of a wind turbine, an electrical generator and a control system. The wind turbine
converts wind ic energy into mechanical energy and the latter into electrical energy by means
of an electrical generator.
The flow field around a wind turbine is unsteady and three-dimensional. Mathematical models
are available in the literature for solving the equations for such plex flow. These may be
divided into momentum, vortex, and finite-difference models. The momentum models use actuator
surfaces to approximate wind-turbine effects and subdivide the flow domain into finite numbers
of stream-tubes [1–8]. Vortex models simulate the wind-turbine blades and use bounded, distrib-
uted vortices [9–17]. Finally, finite difference models solve the fluid-dynamic governing equations
by means of finite-volume or finite-difference methods [18–21].
* Corresponding author. Fax: ϩ 39-80-5460411; E-mail: ******@
0360-5442/98/$ - see front matter  1998 Elsevier Science Ltd. All rights reserved.
PII: S0360-5442(98)00067-X
10 L. Dambrosio, B. Fortunato/Energy 24