Wind turbine with damper

Patent · Tue Jun 23 04:00:00 EDT 1987

OSTI ID:6436235

Kenfield, J A.C.

This patent describes a horizontal axis wind turbine assembly comprising: a rotor assembly having delta wing blades; a head assembly secured at one end to the rotor assembly and being mountable on a tower so as to pivot about a vertical yaw axis; a tail assembly pivotally mounted on the other end of the head assembly, so as to pivot about a vertical axis, the assembly having one or more upstanding tail surfaces which cooperate with the wind to cause the assembly to track the wind; the central axis of the rotor assembly being offset from the vertical plane of the yaw axis; A wind force acting on the blades will generate a moment about the yaw axis; moment urges the rotor assembly to pivot from an operative position, transverse to the wind, toward a feathered position, edgeways to the wind flow; the tail assembly continues to track the wind; means, connected with the head assembly, for applying a counterbalancing counter-rotational moment to the head assembly to resist the wind moment; a container, mounted in the wind turbine assembly, for containing a reservoir of hydraulic fluid; a double-acting cylinder being pivotally connected with the head and tail assemblies so as to resist pivoting movement of the head assembly about the yaw axis; hydraulic fluid lines interconnecting the reservoir and the two ends of the cylinder chamber; and means for controlling the rate of fluid movement through each of the lines.

• Assignee: Minister of Energy and Natural Resources, Edmonton
• Patent Number(s): US 4674954
• OSTI ID: 6436235
• Country of Publication: United States
• Language: English

Related Subjects

17 WIND ENERGY
170602* -- Wind Energy Engineering-- Turbine Design & Operation
AERODYNAMICS
CONTAINERS
CONTROL EQUIPMENT
CYLINDERS
DAMPING
DESIGN
EQUIPMENT
FLOW RATE
FLUID MECHANICS
FLUIDS
HORIZONTAL AXIS TURBINES
HYDRAULIC CONTROL DEVICES
HYDRAULIC FLUIDS
MACHINERY
MECHANICAL STRUCTURES
MECHANICS
MOTION
OPERATION
POSITIONING
ROTATION
ROTORS
SURFACES
TOWERS
TURBINE BLADES
TURBINES
TURBOMACHINERY
WIND
WIND TURBINES
WORKING FLUIDS