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anemómetro, m., +s
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anemometer, +s
def. Device that measures the wind speed and transmits wind speed data to the controller.
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ângulo de ataque das pás, m., ângulos de ataque das pás
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pitch |
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caixa de velocidades, caixas de velocidades
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gear box, gear boxes
def. Device that connects the low-speed shaft to the high-speed shaft and increases the rotational speeds from about 30 to 60 rotations per minute (rpm) to about 1200 to 1500 rpm, the rotational speed required by most generators to produce electricity.
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cata-vento, +s
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wind vane, wind vanes
def. Device that measures wind direction and communicates with the yaw drive to orient the turbine properly with respect to the wind. It is usually next to the anemometer at the tail of the wind turbine.
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eixo de alta velocidade, m., eixos de alta velocidade
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high-speed shaft, +s
def. Device that drives the generator.
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eixo de baixa velocidade, m., eixos de baixa velocidade
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low-speed shaft, +s |
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energia excedentária num volante de inércia
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excess energy in rotational form |
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engrenagem de posicionamento da nacela, f., engrenagens de posicionamento da nacela
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yaw drive, yaw drives
def. Device used to keep the rotor facing into the wind as the wind direction changes.
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flutuação de tensão, f, flutuações de tensão
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flicker, +s
def. An engineering expression for short lived voltage variations in the electrical grid which may cause light bulbs to flicker. This phenomenon may be relevant if a wind turbine is connected to a weak grid, since short-lived wind variations will cause variations in power output.
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gerador, m., +es
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generator, +s
def. Device that produces direct current from a rotating shaft.
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motor de posicionamento da nacela, motores de posicionamento da nacela
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yaw motor, yaw motors
def. Device that powers the yaw drive.
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nacela, f., +s
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nacelle, +s
def. Protective cover over the gear box, low- and high-speed shafts, generator, controller, and brake. The rotor attaches to the nacelle, which sits atop the tower. Some nacelles are large enough for a technician to stand inside while working.
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pá, f., +s
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blade, +s
def. Part of a wind generator rotor that catches the wind, lifting and rotating. most turbines have three blades.
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pico de vazio, m, picos de vazio
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lower peak loading |
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rajada passageira, rajadas passageiras
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transient gust, transient gusts |
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rolamento (das pás), m., +s
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bearing, +s
def. Device that transfers a force to structural supports. In a wind generator, bearings allow the shaft to rotate freely, and allow the machine to yaw into and out of the wind.
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rotor, +es
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rotor, +s
def. The blade and hub assembly of a wind generator.
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torre eólica, f., torres eólicas
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tower, +s
def. Structure that supports a wind generator, usually high in the air, made from tubular steel or steel lattice. Because wind speed increases with height, taller towers enable turbines to capture more energy and generate more electricity.
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travão de disco automático, travões de disco automáticos
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brake
def. Device to slow a wind turbine's shaft speed down to safe levels electrically or mechanically.
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vazio, m, +s
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↑
pico de vazio
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vento dominante, m., ventos dominantes
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prevailing wind, prevailing winds
def. Wind the direction of which, at a given place, has a clearly higher frequency than that of winds of other directions.
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