The vertical axis wind turbines (VAWT) have been suffering an increased acceptance for urban wind turbines integration in the future smart grid for decentralized generation (DG). The VAWT have several advantages over the more conventional horizontal axis wind turbines (HAWT): the smaller number of components; low sound emissions; their insensitivity to fast changes in wind flow direction; a low...

In this using paper a method is presented for the aerodynamic and structural analysis of a horizontal axis wind turbine using simplified methods. In the first part of the program the optimum rotor configuration for twist and chord is determined using the momentum and blade element theories for a rotor without coning or tilting and assuming zero drag average wind velocity. Then coning angle and ...

The paper studies the results of mathematical modeling external flow Siemens 3D model SWT3.6120 (B52 air foil) horizontal axis wind turbine (HAWT), using NavierStokes equations averaged by Reynolds (RANS) closed byk,kShear Stress Transport (SST) and Eddy Viscosity (EVT) turbulence models. task correct determination speed vector deviation angle over nacelle HAWT is required operation yawing syst...

This paper presents a two loop optimal control structure for variable speed fixed pitch horizontal axis wind turbines (HAWT) having flexible drive trains. That structure, formed by a low frequency loop and a high frequency loop, is the result of the frequency separation principle adopted in the wind modelling. The optimality of the whole system is expressed by the trade-off between the energy c...

Wind energy is one of the renewable resources which clean and sustainable wind turbine used for harnessing from wind. The blades are key components a to convert into rotational energy. Recently, wingtip devices in horizontal axis (HAWT), decreases vortex drag, while increases lift thereby improve performance turbine. In present study, winglet at tip an NREL phase VI blade. Solidworks, Pointwise...

In this study, the feasibility of using micro-wind turbines to power wireless sensors on a cable-stayed bridge is comprehensively investigated. To this end, the wind environment around a bridge onto which a turbine is installed is examined, as is the power consumption of a wireless sensor. Feasible alternators and rotors are then carefully selected to make an effective small wind generator (kno...

This study concerned the dynamic behavior of the wind turbine rotor. Before all we have studied the loads applied to the rotor, which allows the knowledge their effect on the fatigue, also studied the rotor with longitudinal crack in order to determine stress, strain and displacement. Firstly we compared the first six modes shapes between cracking and uncracking of HAWT rotor. Secondly we show ...

Wind turbine conversion systems require feedback control to achieve reliable wind turbine operation and stable current supply. A robust linear parameter varying (LPV) controller is proposed to reduce the structural loads and improve the power extraction of a horizontal axis wind turbine operating in both the partial load and the full load regions. The LPV model is derived from the wind turbine ...

The wind is one of the most promising green energy resources that replenishes itselves in less than a human lifetime without depleting planet’s resources. According to disposition blade concerning shaft, turbine can be classified as horizontal axis (HAWT) and vertical (VAWT). In contrast VAWT, HAWT covers commercial installations around globe. However, VAWTs became alternative for areas far awa...