초록 ▼

A windmill is provided with a yawing device which includes two or more gear motors disposed about the periphery of a stationary tower toothed rim. Each gear motor has a driving wheel attached at an end thereof for engaging the toothed rim. By applying a suitable current to the gear motors, in equal

A windmill is provided with a yawing device which includes two or more gear motors disposed about the periphery of a stationary tower toothed rim. Each gear motor has a driving wheel attached at an end thereof for engaging the toothed rim. By applying a suitable current to the gear motors, in equal and opposite directions, the mill can be held at an optimum position, relative to the wind, at a low power consumption. The use of multiple motors also provides optimum reliability with smooth and even yawing action.

대표청구항 ▼

A yawing device for rotating a windmill about a yawing axis, the windmill rotatable on a stationary tower base, said yawing device comprising: a toothed rim fixedly attached to the stationary tower base; at least two motors, each motor disposed separately about the periphery of the toothed rim, a dr

A yawing device for rotating a windmill about a yawing axis, the windmill rotatable on a stationary tower base, said yawing device comprising: a toothed rim fixedly attached to the stationary tower base; at least two motors, each motor disposed separately about the periphery of the toothed rim, a driving wheel rotatably mounted to each gear motor, the driving wheels engaged with the toothed rim, each gear motor having a torque capacity which is applicable in an equal and opposite direction and amount to the torque applicable by the other gear motor such that the windmill is held in an operating position.