Desert wind turbines

Desert wind turbines
1) No iron core, non-resistance (bearing loss only)
2) Generating efficiency:91%
3) Small and light
Desert wind turbines
1) A good combination of modern technique and Chinese art
2) No iron core, non-resistance (bearing loss only)
3) Generating efficiency: 91%
4) Small and light

No
Parameter
Symbol
unit

1
Rated voltage
E
V
28
2
Output voltage


three phase AC
3
Rotor


permanet magnet (inner rotor)
4
Stator


drag cup (no iron core)
5
Rated speed
N
rpm
750
6
Rated output power
P
W
200
7
Maximum output power
PMAX
W
350
8
Constant speed
KE
V/krpm
75
9
Resistance between terminals
RT
Ω
0.071
10
Maximum temperature of winding
CMAX
°C
150
11
Generator efficiency
η
-
91%
12
Starting torque
T0
N*m
tiny (bearing loss only)
13
Number of phases
-
-
3
14
Wiring method
-
-
Y-type
15
Material of magnet
-
-
neodymium iron boron
16
Total weight
WM
Kg
2.5
17
External diameter of generator
MD
mm
138
18
Total length
ML
mm
90 (98 including axial length)
19
Diameter of axis
-
mm
15
20
Material of axis
-
-
steel
21
Bearing
-
-
deep groove ball bearing