文档介绍：Renewable Energy 36 (2011) 132e141
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Renewable Energy
journal homepage: ate/renene
A sensorless control for a variable speed wind turbine operating at partial load
Ronilson Rocha
School of Mines, Department of Engineering of Control and Automation, Federal University of Ouro Preto, Campus Morro do Cruzeiro, 35400-000 Ouro Preto, MG, Brazil
article info abstract
Article history: This paper presents a sensorless control for a variable speed wind turbine (WT) operating at partial load
Received 3 August 2009 in order to eliminate the direct measurement of the wind speed. In this proposal, the estimated aero-
Accepted 4 June 2010 dynamic torque is used to determine the optimal reference of the speed control for maximum energy
Available online 29 June 2010
conversion. The maximization of the efficiency on energy conversion and the minimization of detri-
mental dynamical loads are control trade-offs considered in the design of an optimal discrete-time
Keywords: feedback LQG/LTR controller for the Wind Energy Conversion System (WECS), which is based on the
Wind energy
optimization of a quadratic cost function. The performance of the proposed control when the WT is
Stall regulated wind turbine
Sensorless control submitted to a gust or step variation on wind speed is evaluated putational simulations. It is
LQG/LTR methodolog