VENSYS ENERGY is a leading manufacturer of gearless wind turbines in the megawatt and multi-megawatt class. More than 50,600 MW installed power already has been connected to the grid worldwide.
A wide range of platforms featuring variable tower heights, rotor diameters and generators with different power outputs ensure configurations that are perfectly adapted to local requirements and provide the maximum energy yields for all wind classes even in areas where wind conditions are poor.
VENSYS also erects all kinds of tower systems and has extensive experience with 165-meter hybrid towers as well as single-blade assembly in a demanding construction environment. Low sound emissions are another reason why our turbines are perfect for virtually any location.
VENSYS Energy AG with its head office in Neunkirchen/Germany develops and manufactures gearless wind turbines
We have made a name for ourselves with high-performance turbines that feature a permanently magnet-excited multi-polar generator, a low-maintenance toothed-belt drive for the blade pitch system, a simple generator cooling and the full-power converter system that allows for a wide range of grid requirements to be met.
The special turbine design relies on a minimum number of high-quality and long-lasting components. High efficiency, low maintenance as well as the compact design and the advantages of systems that are virtually free of wear ensure consistently higher yields.
All the core components of VENSYS wind turbines are designed by our experienced engineers and manufactured in different production facilities of the VENSYS Group.
While the full-power converter and the special electrical pitch system are produced at Vensys Elektrotechnik in Diepholz, the multi-polar generatoris assembled in Neunkirchen. Production of our rotor blades for different power classes is carried out by E-Blades, our subsidiary in Spain.
It is this interaction of perfectly-coordinated key components paired with our own turbine control system which guarantees reliable engine technology – made by VENSYS.
Rated power: 4,1 MW
Cut-in wind speed: 3 m/s
Cut-out wind speed: 25 m/s
Rotor diameter: 114,95 m
Swept area: 10,378 m2
Hub height: 72,5m, 92,5m Steel tube/hybrid (concrete/steel)
Wind Class: IEC IIA
Based on the VENSYS 3.0 MW platform, the VENSYS 136 with an output of 3.5 MW is the logical upgrade of our proven bestseller.
Rated power: 1.5 MW
Cut-in wind speed: 3 m/s
Cut-out wind speed: 25 m/s
Rotor diameter: 70.3 m
Swept area: 3882 m2
Rated Speed: 19 rpm
Gearbox: no gears
Power control: pitch
Brakes: single-blade adjustment, triple redundant
Grid Connection: frequency converter
Yaw System: geared electric motors
Tower: 65m, 85m steel tube
Wherever reliability, operating safety and low maintenance requirements are needed, VENSYS wind turbines show what they are capable of. Not only do we deliberately dispense with a gearbox, our turbines also make do with a minimum number of high-quality components.
VENSYS has optimized wind turbines to the smallest detail. The simple setup of the system combines high durability and operating safety, which aims at high energy yields while minimizing losses. All of this is guaranteed by the five distinctive features of VENSYS technology: direct drive, permanent magnet technology, full-power converter system, the VENSYS blade pitch system and air cooling.
Wind turbines designed by VENSYS operate without high-maintenance gearboxes that are prone to wear. They save on elaborate technology and require fewer environmentally hazardous lubricants and consumables than conventional transmission systems. Safe and efficient operation thus go hand in hand.
VENSYS combines the advantages of gearless technology with the generator concept of a synchronous machine with permanent magnet excitation. The rotor speed is transferred directly to the multi-polar generator – completely without any excitation losses. The gearless technology design concept used by VENSYS thus leads to high wind yields and high returns.
VENSYS wind turbines are equipped with a directly driven, permanently magnet-excited synchronous generator. The high-quality permanent magnets are fitted to the outer cover of the rotor, reducing heat losses in the generator and providing for simple and efficient cooling.
The shape of the external rotor supports a compact design, making the best possible use of the tower head volume. A maximum generator diameter can be achieved on a reduced surface – yet another aspect why VENSYS is synonymous with enhanced efficiency.
VENSYS utilizes permanent magnet technology known from electric drives in navigation and electric vehicles with a tailor-made turbine design concept for wind energy purposes.
The robust VENSYS generators bring together three decades´ worth of know-how in independent research work on permanent magnet technology. The generators of the 2.5/3.0 platform are performance-optimized enhancements with an even larger diameter and greater length yet lower speed.
Unlike electrical excitation, permanent magnet technology does not have the disadvantage of excitation losses. The savings in excitation power are thus fully available as additional energy yield in VENSYS wind turbines.
This leads to improved efficiency, in particular in the low or partial-load range. In addition, there is no need to transfer the excitation power by means of slip rings, which saves on complex turbine components and reduces production and operation costs.
A special feature of VENSYS wind turbines is the lubrication-free toothed belt for transmitting the force between the pitch drive and the rotor blade. Our extremely durable drive system thus prevents wear as a result of corrosion or pitting which can be found in conventional rotor blade adjustment systems using gearing and drive pinions.
The pitch system requires virtually no maintenance. Due to integrated special fibers, the toothed belt is also impervious to shock load and can easily be exchanged if the need arises. The variable-speed rotor blade drive ensures very good incident flow even in the partial-load range.
Our patented toothed-belt drive for the blade pitch system has stood the test of time in the most diverse locations: impervious to moisture, dirt and temperature changes as well as constant exposure in areas with strong and turbulent winds.
In addition, triple redundancy further enhances safety. The drive of each rotor blade comes with an energy storage device (capacitor), making sure that in the event of power failure the rotor blades can safely be driven into braking position. The long-life capacitors deliver the required power even in low temperatures.
Feeding in short-circuit current, quick separation from the grid or bridging short-term voltage drops and sudden voltage rises in the grid: all these are power plant properties that distinguish VENSYS converter systems, making them suitable for universal grid connections.
The total power produced is directed via the VENSYS converter, which allows for the generator to be decoupled effectively from the grid. Power network disturbances and voltage fluctuations thus do not affect the control behavior of VENSYS wind turbines. The converter can even support weak grids.
The generator is one of the core elements in the nacelle of any wind turbine. Generating electricity always entails heat losses, causing the copper windings to heat up. To prevent damage to the generator, the heat must be dissipated.
To do so, VENSYS relies on a simple yet efficient air cooling method. The generators of the 1.5 MW platform are cooled using a passive, maintenance-free air circulation system without any moving parts. The ambient air is directed through special cooling channels on the generator housing