Wind power generation overspeed control system

An overspeed protection system for a wind turbine having a hub and at least one rotor blade mounted to the hub includes a rotation sensor adapted for measuring a rotor speed of said wind turbine; a comparator connected to the rotation sensor and adapted for comparing the measured rotor speed with a predetermined threshold value of the rotor speed wherein the comparator outputs a signal indicative of the comparison; and an auxiliary pitch drive controller connected to the comparator and adapted to receive the signal indicative of the comparison, the auxiliary pitch drive controller being further adapted for controlling a pitch drive unit of the wind turbine independently of a main turbine controller and, if the threshold value is exceeded, to adjust a pitch angle of the rotor blade of the wind turbine so that aerodynamic braking of the wind turbine is effected. [pdf]

Qatar grid-connected wind power generation system

This study presents an analysis of the current electricity supply grid in Qatar and investigates the potential of integrating various renewable energy sources (RES) into the grid. The hourly demand profile for electri. [pdf]

Classification of wind power generation systems

According to the orientation of the axis of the rotor, wind turbines are classified into two types; 1. Horizontal axis 2. Vertical axis . A wind power plant is also known as a wind farm or wind turbine. A wind power plant is a renewable source of electrical energy. The wind. . To estimate the performance of wind turbines, we need to consider the below parameters; 1. Power co-efficient 2. Tip speed ratio 3. Solidity Power co-efficient The power co. . According to the speed and frequency, there are different schemes available for the electric generation by the wind turbine. These schemes are. . The power produced by the wind turbine depends on the available wind speed. Therefore, the wind turbines are located at a place where persistent and strong wind is available. The. There are basically two types of wind turbines — fixed-speed turbine and variable wind turbine. Out of these two types of wind turbines, the most commonly used is the fixed-speed turbine, where the induction generator is directly connected to the grid. [pdf]