| The Dead 4/15/09 John Paul Jones Arena, Charlottesville, VA Click below to preview tracks from this show DOWNLOAD THIS SHOW |
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Worcester tonight, woohoo!
"Backwards I see in my own days where I sweated through fog with linguists and contenders, I have no mockings or arguments, I witness and wait."{Walt Whitman}... Bob Dylan said, "I'll let you be in my dream if I can be in yours".....{okay, maybe I do have a few mockings and arguments}. (this blog is best viewed with firefox on a mac)
| The Dead 4/15/09 John Paul Jones Arena, Charlottesville, VA Click below to preview tracks from this show DOWNLOAD THIS SHOW |
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At 340 feet this wind turbine will stand 100 feet taller than the 240 foot turbine at Portsmouth Abbey, with a blade length of 123 feet compared to 77 feet. (corrected)
AAER wind energy- The A-1500 turbine is a three-blade, horizontal-axis turbine, designed for optimal use of wind resources in all types of sites.
It has a variable rotational speed and full span pitch control, which means that it can be operated at optimum aerodynamic efficiency throughout the operational range. The A-1500 reaches its rated output at a wind speed of 11 m/s.
The combination of electrical torque control and pitch control allows the wind turbine to be operated at a wind speed of 4 m/s, with a virtually constant power output from 11 through 20 m/s.
Rotor Diameter, m 70 / 77
Swept area, m2 3.848 / 4.657
Rotational speed, rpm 11.0-22.0 / 9.7-19.0
Wind class I-II / II-III
Number of rotor blades 3
Power regulation Pitch
Pitch system type Gearbox & servo motor
Brake System
Primary braking system - Full span blade feathering
Service / Emergency brake Disk brake
Tower
Hub Height - m 65, 80
Type of generator - Wound rotor induction generator
Rated power, kW 1500
Rated voltage, V 690
Frequency, Hz 50 or 60
Rated power Output, kVA 1670
Type of inverter IGBT, 4-quadrant
Power factor (cos ΓΈ) Controllable
Grid soft start connection Converter controlled
Harmonic Distorsion Imperceptible
Gearbox
Type of gearbox Planetary & Helical
Control System
Type of construction PLC, free programmable
Yaw System
Type of bearing Sliding bearing
Type of drive Gear motor
Number of drive units 4
more details and pictures - AAER wind energy and Portsmouth Economic Development Committee (PEDC)
also the details on Portsmouth Abbey's turbine which has been operating since March of 2006 supplying more than 40% of the Abbey's needs can be found at portsmouthabbey.org