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] Currently in Croatia there's a total of 364 wind turbines which generate total of 970.15 MW or electric energy, but with new turbines coming on-line all the time, it is expected that by mid 2020s total installed power will reach 3,200 MW, [5] As of early 2020 Croatia generates around 28.3% renewable energy, Government hopes Croatia could generate around 37.5% renewable energy from wind and solar by 2030 and has adopted new strategy to achieve that target. [6]
[pdf] Throughout Israel's history, securing the energy supply had been a major concern of Israeli policymakers. The , which traces its history to 1923, with the , is the main electricity generator and distributor in Israel. Petroleum exploration began in 1947 on a surface feature in the area in. On 8th September 2009, the PUA published the principles, regulations and tariffs for the generation of electricity from small wind turbines. Consumers will be able to generate their own electricity for self usage and sell the surplus to the national grid.
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