Estimation of Wake Induced Power Loss in Wind Turbines Using Actuator Line Model

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Estimation of fracture relative permeabilities from unsteady state corefloods Akın, Serhat (2001-06-01) A methodology to test the possible deviations of fracture relative permeabilities from straight-line relationship with saturation is discussed. It is shown that with matrix relative permeability data known, it is possible to obtain fracture relative permeabilities by history matching experimental data with double porosity numerical models output. Rather than linear saturation dependence, fracture relative permeability is a power law function of the corresponding phase saturation. The impact of several impor...
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ESTIMATION OF STATOR RESISTANCE OF INDUCTION MOTOR USING INNOVATION BASED ADAPTIVE EXTENDED KALMAN FILTER Yırtar, Mehmet Zeki; Bostancı Özkan, Emine; Ertan, Hulusi Bülent; Department of Electrical and Electronics Engineering (2021-9-24) In the industry, induction motors are widely utilized due to their low cost and low maintenance requirements. To get better performance from the motor, vector control (FOC) is introduced in the last decades. In this thesis, the software and hardware parameters that affect the performance of the vector-controlled induction motor will be investigated by simulations and experiments. PI controller design, axis decoupling, dc-link compensation and stator resistor estimation are implemented and simulated in Simul...
Estimation of the height of surface breaking cracks using ultrasonic timing methods Öztürk, Emre; Doyum, Bülent; Department of Mechanical Engineering (2006) In this thesis, two ultrasonic timing methods are used in order to investigate the accuracy and reliability of measurements for surface breaking cracks having different orientations and heights. Also the best applicable measurement technique is searched by comparing the received test results. These methods are the Time of Flight Diffraction (TOFD) Method using diffraction of longitudinal waves and another method using the reflection of shear waves from the crack tips. In order to simulate and measure the he...

Citation Formats

H. C. Önel and İ. H. Tuncer, “Estimation of Wake Induced Power Loss in Wind Turbines Using Actuator Line Model,” 2020, Accessed: 00, 2021. [Online]. Available: http://dx.doi.org/10.2514/6.2020-3054.