A sensorless control for a variable speed wind turbine operating at partial load
| Autor: | Ronilson Rocha |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Electronic speed control
Engineering Wind power Renewable Energy Sustainability and the Environment business.industry Electric generator Sensorless control Linear-quadratic-Gaussian control Variable speed wind turbine Wind speed law.invention law Control theory Energy transformation Stall regulated wind turbine business Wind energy Physics::Atmospheric and Oceanic Physics |
| Zdroj: | Repositório Institucional da UFOP Universidade Federal de Ouro Preto (UFOP) instacron:UFOP |
| ISSN: | 0960-1481 |
| Popis: | This paper presents a sensorless control for a variable speed wind turbine (WT) operating at partial load in order to eliminate the direct measurement of the wind speed. In this proposal, the estimated aerodynamic torque is used to determine the optimal reference of the speed control for maximum energy conversion. The maximization of the efficiency on energy conversion and the minimization of detrimental dynamical loads are control trade-offs considered in the design of an optimal discrete-time feedback LQG/LTR controller for the Wind Energy Conversion System (WECS), which is based on the optimization of a quadratic cost function. The performance of the proposed control when the WT is submitted to a gust or step variation on wind speed is evaluated from computational simulations. It is also presented some proposals for sensorless control of the electrical generator. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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