Wind turbine rotor control system

Patent · Mon Mar 05 23:00:00 EST 1984

OSTI ID:6355377

Coleman, C; Currin, H D

In a pitch control system for a wind turbine, a mechanical control system changes pitch angle of the rotor blades collectively in response to blade pitch moment. The control system is designed to be used with a downwind constant speed two-bladed horizontal axis teetering hub wind turbine. Pitch placement controls torque for a synchronous alternator connected to the electrical power grid. The pitch control system is manually lockable from the ground in run or shutdown modes. An automatic shutdown mode provides fullfeathering for protection from large amplitude vibrations or loss of the electrical grid.

• Assignee: North Wind Power Co., Inc.
• Patent Number(s): US 4435646
• OSTI ID: 6355377
• Country of Publication: United States
• Language: English

Related Subjects

17 WIND ENERGY
170602* -- Wind Energy Engineering-- Turbine Design & Operation
ALTERNATORS
AMPLITUDES
DESIGN
ELECTRIC GENERATORS
ENERGY LOSSES
INCLINATION
LOSSES
MACHINERY
MECHANICAL VIBRATIONS
POWER LOSSES
ROTORS
TILT MECHANISMS
TORQUE
TURBINE BLADES
TURBINES
TURBOMACHINERY
VELOCITY
WIND TURBINES