u4 platform - unison · u4 platform u136–4.2mw u151–4.3mw. 2. technical specifications...
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U4 PlatformU136–4.2MWU151–4.3MW
2
Technical Specifications
Operational data
Rated power
Cut-in wind speed
Cut-out wind speed
Wind class
Operating temperature range
Max. sound power
Rotor diameter
Swept area
Nacelle (for transportation)
Hub (for transportation)
Blade
Tower
Frequency
Generator
Converter
Pitch system
50 / 60 Hz
Permanent magnet, Synchronous
Full capacity
Electric motor drive
50 / 60 Hz
Permanent magnet, Synchronous
Full capacity
Electric motor drive
136 m
14,470 m
L14.7 m x W4.5 m x H4.2 m
L4.5 m x W3.9 m x H4.2 m
66.5 m
95 / 117 mhh
2 2
151 m
17,908 m
L14.7 m x W4.5 m x H4.2 m
L4.5 m x W3.9 m x H4.2 m
74.0 m
95 / 117 mhh
4,200 kW
3 m/s
22 m/s
IEC IA
-15 °C ~ 40 °C
105.9 dB(A)
4,300 kW
3 m/s
22 m/s
IEC S(IIIA+)
-15 °C ~ 40 °C
107.9 dB(A)
U136
Dimensions
Electrical
Main bearing
Gearbox
Dual, cylindrical and tapered roller
2 planetary + 1 helical stages
Dual, cylindrical and tapered roller
2 planetary + 1 helical stages
Drivetrain
Max. weight (for transportation) 78 ton 78 ton
Module
U151
IEC III IEC I
0
00
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
25000
20000
15000
10000
5000
3 4 5 6 7 8 9 10 11 125 10 15 20 25
Power curve AEP
U151
U136
Power [kW] Power Production [MWh]
Wind Speed [m/s]Wind Speed [m/s]
U151
U136
Blades
Outstanding aerodynamic performance
Vortex generator and T-spoiler applied
Low noise through trailing edge serrations
Robust lightning protection system (IEC level 1)
Near maintenance free electrical pitch
Dual independent blade angle detection
Ultra capacitor back-up
Pitch System
Main Bearing System Gearbox
Yaw System
Tower
Dual, cylindrical and tapered roller bearings
Zero-play rigid structure
Minimal non-torque bending moment
Wet-sump lubrication
Active oil cooler
Hydraulic damper support
Electric inching drive for rotor maintenance
Pressure accumulator for fail safe function
Lubricant leakage protection
Tubular steel construction
High corrosion protection level (C5-M)
Stiff and soft towers
Electrical SystemFull AC/DC/AC conversion decoupled from grid
Compliant to various international grid code requirements
Optimal grid integration through support features
LVRT and droop control available
Cooling System
Main Transformer
External passive cooling
No noise emission
Near maintenance free
No oil leakage (dry type)
Up-tower location to minimize electrical losses
GeneratorPermanent magnet, synchronous
Air to water cooling system
High efficiency at rated power (98%)
Fully encapsulated (IP54)