A Novel Vertical-Axis Wind Turbine for Distributed & Utility ...
Document source : www.ontario-sea.org
Table 1 1kW KR VAWT Specifications
Nominal Power (1 kW)
Type
Vertical axis type
Blade number
7
Diameter
2.44 m
Height
1.26 m
Rotor hub material
SS400
Blade structure
2-Dimensional, arc-type blade
Swept area
3.07
Rotational speed range
12.0 ~ 48.9 rpm
Rotor
Rotor speed control
I.G.V. & S.G.V. position control
# of blades
7
Blade
Material
PVDF Membrane
Main thrust bearing
Taper Roller
Main radial bearing
Self-adjusting
Bearing
Guide vane bearing
Taper Roller
Cut-in wind speed
3.0 m/s
Rated wind speed
12.5 m/s
Furling wind speed
17 m/s
Operating
Conditions
Survival speed
50 m/s
Gear type/Overall gear ratio
Girth Gear/6.35:1
Power Transmission
Lubrication
No lubrication
Type
PMG
Rated power
1.8 kW
Rotational speed range
0 ~ 310 rpm
Rated voltage
500 Vdc
Generator
Protection level
IP 54
Control mechanism
Passive control by stabilizer and rudder
I.G.V. + S.G.V.
Control
Extreme wind control
Furling tail & spring back
around the turbine. Figure 2(a) shows the observation locations in front of the
turbines and velocity vectors at one cross-section of the turbine. The average wind
speed is observed to decrease to 0.7 times of free-stream one in front of the turbine
according to Fig. 2(b), in which x/D represents the normalized distance from the
center of the turbine. Measurements with the downsized model of 580mm in
Summary :
position control # of blades 7 Blade Material PVDF Membrane Main thrust bearing Taper Roller Main radial bearing Self-adjusting Bearing Guide vane bearing Taper Roller Cut-in wind speed 3.0 m/s Rated wind speed 12.5 m/s Furling wind speed 17 m/s Operating Conditions Survival speed 50 m/s Gear type/Overall gear ratio Girth Gear/6.35:1 Power Transmission Lubrication No lubrication Type PMG Rated power 1.8 kW Rotational speed range 0 ~ 310 rpm Rated voltage 500 Vdc Generator Protection level IP 54 Control mechanism Passive control by stabilizer and rudder I.G.V.
Tags :
speed,control,wind,turbine,blade,bearing,power,rotor,type,rated,rpm,front,material