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Reduction of wind powered generator cost by use of a one bladed rotor

Abstract

Cost analysis supported by preliminary design studies of one and two bladed wind powered generator units shows that a 30% reduction in acquisition cost can be achieved with a one bladed design. Designs studied were sized for an output power of 1000 kilowatts. The one bladed design has the potential for reducing acquisition cost to $680 per available kilowatt if the unit is located in a region with mean surface winds of 15 mph. Vibratory loads of the one bladed design are significant and will require considerable design attention. The one per rev Coriolis torque caused by blade flapping is the most significant problem. The major source of blade flapping will be the velocity gradient of the ground boundary layer. A torsional vibration isolating coupling may be required in the generator drive to reduce the loads due to this vibratory torque. An inclined flapping hinge also is desirable to cause pitch-flap coupling that will suppress blade flap motions.
Authors:
Pruyn, R R; Wiesner, W; Ljungstroem, O [1] 
  1. ed.
Publication Date:
Jan 01, 1976
Product Type:
Conference
Report Number:
CONF-740855-P1
Reference Number:
ERA-03-047294; EDB-78-095115
Resource Relation:
Conference: Conference on wind energy, Stockholm, Sweden, 29 Aug 1974; Related Information: In: Advanced wind energy systems. Volume I. Workshop proceedings.
Subject:
17 WIND ENERGY; WIND TURBINES; COST; PERFORMANCE; AERODYNAMICS; CONFIGURATION; MECHANICAL VIBRATIONS; FLUID MECHANICS; MECHANICS; 170400* - Wind Energy- Economic, Industrial, & Business Aspects; 170602 - Wind Energy Engineering- Turbine Design & Operation
OSTI ID:
8547534
Research Organizations:
Boeing Vertol Co., Philadelphia
Country of Origin:
Sweden
Language:
English
Submitting Site:
TIC
Size:
Pages: 2.101-2.131
Announcement Date:
Mar 15, 2013

Citation Formats

Pruyn, R R, Wiesner, W, and Ljungstroem, O. Reduction of wind powered generator cost by use of a one bladed rotor. Sweden: N. p., 1976. Web.
Pruyn, R R, Wiesner, W, & Ljungstroem, O. Reduction of wind powered generator cost by use of a one bladed rotor. Sweden.
Pruyn, R R, Wiesner, W, and Ljungstroem, O. 1976. "Reduction of wind powered generator cost by use of a one bladed rotor." Sweden.
@misc{etde_8547534,
title = {Reduction of wind powered generator cost by use of a one bladed rotor}
author = {Pruyn, R R, Wiesner, W, and Ljungstroem, O}
abstractNote = {Cost analysis supported by preliminary design studies of one and two bladed wind powered generator units shows that a 30% reduction in acquisition cost can be achieved with a one bladed design. Designs studied were sized for an output power of 1000 kilowatts. The one bladed design has the potential for reducing acquisition cost to $680 per available kilowatt if the unit is located in a region with mean surface winds of 15 mph. Vibratory loads of the one bladed design are significant and will require considerable design attention. The one per rev Coriolis torque caused by blade flapping is the most significant problem. The major source of blade flapping will be the velocity gradient of the ground boundary layer. A torsional vibration isolating coupling may be required in the generator drive to reduce the loads due to this vibratory torque. An inclined flapping hinge also is desirable to cause pitch-flap coupling that will suppress blade flap motions.}
place = {Sweden}
year = {1976}
month = {Jan}
}