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WIND ENERGY SOLUTIONS
Synchronous and asynchronous generators
Azimuth and pitch drives
VEM WIND ENERGY 1
VEM drive solutions for any application
We at VEM are expert partners for drive engineering, products and services with services ranging from highly sophisticated
system solutions on special drives to individual components from 60 watts to 42 megawatts output. Our manufacturing
depth ensures solutions tailored to specification as well as with short delivery times. Our products, drive solutions and
services secure maximum productivity, reliability and efficiency.
Machines for wind turbines
We build asynchronous and synchronous generators at up to 8 MW as well as brake motors for azimuth and pitch drives
for the wind energy industry. Our supply range for wind turbines extends to low-voltage equipment for hydraulic, lubrication
and cooling units.
Our engineers work closely with our partners from science and research in developing machines centred on individual
user requirements, machines among the most technologically advanced on the market that play a major role in setting the
standards for the product generation in wind power.
Product range
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Asynchronous squirrel-cage machines
Double-fed asynchronous machines
Synchronous machines (electric and permanent-magnet)
Synchronous machines in multi-pole design for gearless or single-stage gearbox solutions (on request)
Output range: 1 – 8 MW
Voltage range: 690 – 13,800 V
Frequencies: 50/60 Hz or converter operation
Cooling methods: air-to-air, air-to-water, water jacket
VEM WIND ENERGY 2
VEM – the first choice for offshore wind generators
© Hans Hillewaert / CC-BY-SA-3.0
A vision taking shape – offshore wind turbines will play a prominent role in the energy supply of the future, and operating
these massive installations at sea reliably and profitably requires outstanding engineering achievement. This applies especially to developing high-output wind generators. We at VEM have first-class expertise in this discipline, as our customers
will testify – you will find our generators in most of the world’s high-performance offshore wind turbines. We have taken a
leading role in the 1.5 to 8 MW output range, and our generators for direct grid coupling – double-fed asynchronous and
high-speed synchronous machines – are also available in high-voltage versions up to 13.8 kV.
The Thornton Bank offshore wind farms off the Belgian coast (left) as well as Ormonde in the Irish Sea (right)
run with VEM generators
VEM WIND ENERGY 3
Quality testing at VEM
We at VEM place utmost priority on product quality and customer satisfaction – we use in-house test beds and testing
facilities to make sure that our machines meet the quality standards required, and our high-quality engineering and qualified,
experienced staff ensure that test procedures are carried out according to industry standards. We are certified according
to DIN EN ISO 9001 and have extensive experience in testing requirements for a variety of certification organisations in
Germany and across the world.
Testing facilities with up to 6 MW testing power for large machines at our Dresden VEM location
VEM WIND ENERGY 4
Technical benefits
Our VPI (vacuum pressure impregnation) technology ensures consistently high insulation resistance in our preformed coils.
Rotor windings in double-fed generators are always designed as medium-voltage coils for high voltage gradients in converter operation, and we only use stainless-steel slip rings for grounding systems to ensure that our VEM wind power
generators will easily meet the specifications for operation in harsh coastal or offshore environments. Redundant grounding
systems and specifically designed bearing insulation ensure safe converter operation. We have a high level of vertical integration to give us the agility and flexibility to respond quickly to customer requirements.
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High level of production depth – a prerequisite for rapid and flexible fulfilment of customer
requirements
Solutions tailored to specification for special site conditions
Designed for load capacity and bearing lifetime according to Germanischer Lloyd and TÜV
Optimum efficiency even at partial load, noise-reduced machines
Dimensional adjustments for nacelle design specifications using 3D CAD
Continuous high insulation resistance on preformed coils
Slip rings in stainless steel
Rotor winding designed for high voltage gradients in converter operation
Tried and trusted VEMoDUR-VPI-155 insulation system
VEM WIND ENERGY 5
Asynchronous generators
Double-fed induction generators (DFIGs)
Technical specifications
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Output range: 1.5 – 8 MW
Voltage: 575 V, 690 V, 950 V, 3,300 V, 6,600 V, 11,000 V, 13,800 V
Speed: 650 – 2,200 rpm (additional speed ranges available on request)
Cooling methods: air-to-air (IC 611 – IC 666), air-to-water (IC 81 W7, IC 86 W7)
Features: Design according to DIN EN 60034 (IEC 72), generators for variable speed and fixed stator frequency; IM B3 designs according to DIN/IEC, robust, low-vibration design; IP 23, IP 54, IP 55
protection type, insulation class F, VEMoDUR-VPI-155 vacuum-pressure impregnation (VPI) insulation system; energy-efficient and environmentally friendly, highly modifiable
VEM WIND ENERGY 6
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Product examples
1.5 MW (type DASAA 5023-4U)
Air-to-air cooling
■ Voltage: 690 V, speed: 1,800 rpm, frequency: 50 Hz
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1.5 MW (type DASAB 5027-6U)
■ Air-to-air cooling
■ Voltage: 690 V, speed: 1,440 rpm, frequency: 60 Hz
2.0 MW (type DASAA 5025-4U)
■ Air-to-air cooling
■ Voltage: 690 V, speed: 1,780 rpm, frequency: 50 Hz
2.5 MW (type DASAA 6328-6U)
■ Air-to-water cooling
■ Voltage: 660 V, speed: 1,150 rpm, frequency: 50 Hz
3.6 MW (type DASAA 6329-6U)
■ Air-to-air cooling
■ Voltage: 950 V, speed: 1,200 rpm, frequency: 50 Hz
5.4 MW (type DASAA 8030-6UA)
■ Air-to-air cooling
■ Voltage: 950 V, speed: 1,170 rpm,
frequency: 50 Hz
6.5 MW (type DAMAK 8032-6WF)
■ Air-to-water cooling
■ Voltage: 6,600 V, speed: 1,170 rpm,
frequency: 50 Hz
VEM WIND ENERGY 7
Synchronous generators
Technical specifications
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Output range: 1.5 – 8 MW
Voltage: 690 V – 6,600 V (converter) or up to 13.8 kV (grid)
Speed: 800 – 2,200 rpm (additional speed ranges available on request)
Cooling methods: air-to-air (IC 611 – IC 666), air-to-water (IC 81 W7, IC 86 W7)
Features: Design according to DIN EN 60034 (IEG 72), generators for variable speed and variable
stator frequency; IM B3 designs according to DIN/IEC, robust, low-vibration design; IP 23, IP 54,
IP 55 protection type, insulation class F, VEMoDUR-VPI-155 vacuum-pressure impregnation (VPI)
insulation system; energy-efficient and environmentally friendly, highly modifiable
VEM WIND ENERGY 8
Product examples
2.2 MW (type DRSYZ 5025-6US)
Synchronous generator, brushless excitation
■ Air-to-air cooling
■ Voltage: 800 V, speed: 1,650 rpm, frequency: 82.5 Hz
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2.5 MW (type DRSYZ 5623-6USW)
■ Synchronous generator, brushless excitation
■ Air-to-air cooling
■ Voltage: 690 V, speed: 1,650 rpm, frequency: 82.5 Hz
2.5 MW (type DPSPZ 5625-6U)
■ Synchronous generator, permanent magnet
■ Air-to-air cooling
■ Voltage: 690 V, speed: 1,650 rpm, frequency: 82.5 Hz
3.5 MW (type DRSYZ 6325-6US)
■ Synchronous generator, brushless excitation
■ Air-to-air cooling
■ Voltage: 800 V, speed: 1,392 rpm, frequency: 68.1 Hz
1.5 MW/2.5 MW
■ Synchronous generator, permanent magnet
■ Gearless
■ Joint services
VEM WIND ENERGY 9
Brake motors for azimuth and pitch drives
We at VEM also supply low voltage drives for wind turbines in a full line of three-phase machines. Our three-phase asynchronous brake motors feature exceptional reliability, durability and effectiveness, and are highly modifiable for universal
application. We also provide powerful solutions for high-reduction precision gearboxes as used in applications that place
heavy demands on torque and speed, and we have years of experience in manufacturing brake motors for high-reduction
gearboxes to act as actuators in azimuth drives. You will find wind farms fitted with our low-voltage machines – including
offshore designs – across the world.
Motors for azimuth drives
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Output range up to 7.5 kW
Design according to DIN EN 60034 (IEC 72)
Robust, low-vibration design
Mounted twin-face brake
IP 55 protection type, insulation class F
Product examples
Azimuth drive mounting
3.7 kW
■ Voltage: 690 V Y, speed: 1,200/1,800 rpm, frequency: 50/60 Hz
■ Self-cooled brake motor, IC 411 cooling method
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VEM WIND ENERGY 10
Motors for pitch drive
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Output range up to 7.5 kW
Incl. transmitter, special coil, condensation drainage and mounted twin-face brake
Design according to DIN EN 60034 (IEC 72)
Available in special coating for offshore application (KTL)
Product examples
Pitch drive mounting
5.3 kW
■ Voltage: 360 V D, speed: 2,300 rpm, frequency: 78 Hz
■ Self-cooled brake motor, IC 411 cooling method
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Motors in cooling systems
We also deliver motors for cooling gearboxes, generators, transformers and other electrical components:
Output range up to 7.5 kW
■ Corrosion resistance available for offshore cooling systems
■ Cold start at temperatures down to -30°C (Ex: -20°C)
■ Special voltage
■ Pole-changing
■ Special design for explosion protection
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VEM WIND ENERGY 11
© 2014 VEM
SENSE EXPERIENCE
EXPERIENCE VISION www.vem-group.com
VEM WIND ENERGY 12
VEM/01-013 E/0914 Printed in Germany. Subject to change.
Detailed information
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