Wind turbine generator with improved operating subassemblies

Patent · Tue Jan 01 00:00:00 EST 1985

OSTI ID:865622

Cheney, Jr., Marvin C. ^[1]

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1. (24 Stonepost Rd., Glastonbury, CT 06033)

A wind turbine includes a yaw spring return assembly to return the nacelle from a position to which it has been rotated by yawing forces, thus preventing excessive twisting of the power cables and control cables. It also includes negative coning restrainers to limit the bending of the flexible arms of the rotor towards the tower, and stop means on the rotor shaft to orient the blades in a vertical position during periods when the unit is upwind when the wind commences. A pendulum pitch control mechanism is improved by orienting the pivot axis for the pendulum arm at an angle to the longitudinal axis of its support arm, and excessive creep is of the synthetic resin flexible beam support for the blades is prevented by a restraining cable which limits the extent of pivoting of the pendulum during normal operation but which will permit further pivoting under abnormal conditions to cause the rotor to stall.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• DOE Contract Number: AC04-76
• Assignee: Cheney, Jr., Marvin C. (24 Stonepost Rd., Glastonbury, CT 06033)
• Patent Number(s): US 4545728
• OSTI ID: 865622
• Country of Publication: United States
• Language: English

Related Subjects

wind
turbine
generator
improved
operating
subassemblies
yaw
spring
return
assembly
nacelle
position
rotated
yawing
forces
preventing
excessive
twisting
power
cables
control
negative
coning
restrainers
limit
bending
flexible
arms
rotor
towards
tower
stop
means
shaft
orient
blades
vertical
periods
unit
upwind
commences
pendulum
pitch
mechanism
orienting
pivot
axis
arm
angle
longitudinal
support
creep
synthetic
resin
beam
prevented
restraining
cable
limits
extent
pivoting
normal
operation
permit
abnormal
conditions
stall
preventing excessive
improved operating
stop means
wind turbine
normal operation
longitudinal axis
turbine generator
vertical position
control mechanism
rotor shaft
power cable
abnormal condition
normal conditions
flexible beam
spring return
normal condition
support arm
power cables
pivot axis
/416/