The effects of controls on fatigue loads in two-bladed teetered rotor wind turbines
- Univ. of Texas, El Paso, TX (United States). Mechanical and Industrial Engineering Dept.
This paper presents a quantitative analysis of the fatigue loads in a yaw-controlled, passive pitch, 2-bladed teetered-rotor wind turbine using proportional-integral, full state optimal, and fuzzy logic controllers. Time domain simulation data is generated using the EASY5x/WT software developed at the University of Texas at El Paso. The simulation data reveal that the choice of controller type can play a very important role in the fatigue life of a wind turbine and should be considered early in the design process of the wind turbine. In summary, the fuzzy logic controller is the most robust controller under a wide regime of wind conditions. It provides the best overall performance in terms of power regulation capability and minimum fatigue loads. The optimal controller with a full state Kalman filter observer provides a satisfactory performance in terms of power regulation capability and loads when the operating condition is close to the design point at which the controller was optimized. It fails to regulate the power output when the actual operating point deviated too far, about 30% in the computer simulations, from the designed operating point. The PI controller provided satisfactory performance in power regulation. However, it produced the worst fatigue loads to the wind turbine among the three controllers.
- OSTI ID:
- 372122
- Report Number(s):
- CONF-960154-; ISBN 0-9648731-8-4; TRN: IM9641%%199
- Resource Relation:
- Conference: Energy Week `96: American Society of Mechanical Engineers and American Petroleum Institute energy week conference and exhibition, Houston, TX (United States), 21 Jan - 2 Feb 1996; Other Information: PBD: 1996; Related Information: Is Part Of Energy week `96: Conference papers. Book 8: Wind energy; PB: 218 p.
- Country of Publication:
- United States
- Language:
- English
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