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Many islands are far away from areas where power-grid arrives at difficultly in our country. To solve the problems of using electric and of using freshwater, hybrid wind pumped-storage desalination system was brought forward. Intelligent control of hybrid system was studied. The hardware flat of control system was built. The intelligent control strategy was put forward. Using VC#2008 visual interactive...
Blade is the key component to capture wind energy. It plays a vital role in the whole wind turbine. In this paper, Ply design and intensity analysis are conducted with layered shell elements to treat a composite vertical axis wind turbine blade based on ANSYS. The results show that the ply design meets the requirements of intensity and stiffness. The methods applied in this paper can be used as a...
A vertical axis and lift type wind rotor with 900mm height and 900mm rotational diameter was built. Then the wind rotor was located in a low velocity wind tunnel with a 1000mm×1000mm test exit, to investigation the maintain braces influence to the performance of wind rotor. Three kinds of brace were used; these were 10mm diameter cylider, airfoil and 3mm lamina. The research result show that the brace...
A robust variable structure system control is utilized to design the fault ride-through supplementary control of a wind turbine with a doubly-fed induction generator. Two control objectives are considered: (1) maximization of the wind energy conversion, and (2) terminal voltage regulation of the wind turbine. The major advantage of the proposed FRT control is that this VSS control can regulate the...
Conventional Savonius rotor is a ldquoS-shapedrdquo cross-section rotor, the power performance coefficient (CP=0.15) is rather low. This study introduces a new type-helical Savonius rotor, applies calculation fluid dynamics (CFD) to analyze and improve the performance of the rotor from aspects ratio(H/D), number of blades, overlap distance and helical angle(thetas). The results show the performance...
Consider the parameter uncertainty of the wind power station, wind energy conservation systems state space model with uncertainty is modeled based on Takagi-Sugeno fuzzy models. The robust stability for the kind of wind energy conservation systems is analyzed based on fuzzy control theory. Parametric expression of fuzzy control controller is given based on feasible solution of linear matrix inequality...
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