نتایج جستجو برای: wind load

تعداد نتایج: 227639  

2013
N. Manikandan

It’s important to realize, optimized dispatching of generating units would be useless without a method of control. Frequency regulation in interconnected network is one of the main challenges posed by wind turbine in modern power system. Obviously the method of load frequency control (LFC) plays a vital role in large interconnected power system. However the modern LFC should be able to handle c...

2006
Matthias Fripp Ryan Wiser Michael Brower Michael Milligan Marc Schwartz Dennis Elliott Mark Bolinger

• How large of an effect can the temporal variation of wind power have on the value of wind in different wind resource areas? • Which locations are affected most positively or negatively by the seasonal and diurnal timing of wind speeds? • How compatible are wind resources in the Pacific Northwest and California with wholesale power prices and loads in either region? • Can modeled/estimated win...

2001
Yin Zhou Ahsan Kareem

Traditionally, wind analysis procedures based on the ‘‘gust loading factor’’ approach and experimental techniques involving the high frequency base balance and the ‘‘stick-type’’ aeroelastic model test have assumed ideal structural mode shapes, i.e., linear lateral modes and uniform torsional modes. The influence of nonideal mode shapes manifests itself through modifications in the generalized ...

2000
Xinzhong Chen Ahsan Kareem

This paper presents the formulation and application of stochastic decomposition of covariance and crosspower spectral density matrices in the analysis of wind load effects on structures. This technique not only enhances our understanding of the underlying physics of wind loads and their effects on structures, but also provides efficient means to estimate structural response under multi-correlat...

2011
M. Sasikumar S. Chenthur Pandian

This paper describes the simulation model and the harmonics analysis of multi level inverters fed RL load and induction motor load. The SEIG fed Hbridge multi level inverter (MLI) for variable speed wind energy conversion systems are considered for various stand alone applications. In this paper, the SEIG fed cascaded five levels inverter for induction motor load systems are clearly explained w...

2015
Jun-Feng Hu Wen-Xue Wang Frede Blaabjerg

In this paper, a self-adaptive flange is proposed for the wind turbine shrouded by a flanged diffuser to reduce the wind loads acting on the flanged diffuser at high wind velocities. The self-adaptive flange can maintain the advantages of the flanged diffuser at wind velocities lower than the rated velocity and reduce the wind loads acting on the diffuser and blades at higher wind velocities. N...

2013
M. Sathyakala M. Arutchelvi

For isolated applications, the 3self-excited induction generator driven by wind energy source is more suitable, where the minimum excitation capacitance required for self-excitation of 3induction generator is taken up in this work and the detailed analysis is carried out to determine the range of wind speed variation and consumer demand for the designed capacitance value. An electronic load con...

2014
Abrar Ahmad

Modeling of a wind diesel integrated system (WDIS) is done to perform under varied wind and load conditions on MATLAB Simulink platform. This hybrid system is design in such a way that uunder low wind conditions, a diesel generator feeds the required power to the load. A load flow controller is designed for WDIS to control the load flow depending on the load condition. The power controller redu...

2016
ABDELAZIZ SALAH SAIDI MOHAMMED IBRAHIM Y. AL-RAYIF

The increasing penetration of load model in distribution systems may significantly affect voltage stability of the systems, particularly during Low Voltage Ride-Through (LVRT) wind turbine. The main objective of this work is to present the impact of different static and dynamic load models, on the LVRT recovery after disturbances. A component and composite loading structures are considered, com...

2015
Mingwei Ge Le Fang De Tian Bing-Yang Cao

At present, the radius of wind turbine rotors ranges from several meters to one hundred meters, or even more, which extends Reynolds number of the airfoil profile from the order of 105 to 107. Taking the blade for 3MW wind turbines as an example, the influence of Reynolds number on the aerodynamic design of a wind turbine blade is studied. To make the study more general, two kinds of multi-obje...

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