Lagerwey (wind turbine manufacturer)

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Lagerwey Wind BV

logo
legal form BV
founding 1979 (Lagerwey vd Loenhorst BV)
1986 (Lagerwey Windturbine BV )
2006 (Lagerwey Wind BV)
Seat Barneveld , the NetherlandsNetherlandsNetherlands 
management Henk Lagerweij
Branch Wind turbines
Website www.lagerweywind.nl

Lagerwey Wind BV is a Dutch manufacturer of wind turbines . The company's roots go back to 1979 when Henk Lagerweij first founded the company. It is one of the world's oldest manufacturers of modern wind turbines. In 2018 the company was taken over by the German wind turbine manufacturer Enercon .

Company history

Started as Lagerwey van der Loenhorst BV and first types of systems

In the course of the first oil crisis in 1973 , Henk Lagerweij, as an 18-year-old HTS student (Hogere technical school) in Kootwijk, experimented on a first wind turbine with an output of 2.2 kW. The decisive factor was a confrontation with a strong storm on November 13, 1972 in the nearby Veluwe , which gave Lagerweij the idea of ​​using wind as an alternative energy source to crude oil. This first system essentially consisted of an old tree trunk as a mast to which a generator was attached, which was driven by two rotor blades made of wooden planks. He connected the generator to a meter box to prove that the wind-powered generator could actually feed electricity into the public grid.

Only in the wake of the second oil crisis in 1979/1980 , which caused electricity prices to rise sharply, did renewable energies, especially wind energy, come back into focus again. Together with his brother-in-law Gijs van de Loenhorst, Henk Lagerweij founded the company Lagerwey van der Loenhorst BV in 1979 and developed a system with a nominal output of 10 kW. This was followed by increases in output, initially to 20 kW, and finally a system with a nominal output of 35 kW was brought onto the market under the model name LW 10/35 . The number 10 stands for the rotor diameter of 10.6 m.

The turbine had three rotor blades and was delivered on an 18 to 24 m high, guyed mast and was sold and installed over 60 times in the Netherlands. In 1982 Lagerweij van der Loenhorst also sold a system to neighboring European countries - in Mettingen near Osnabrück , the first German wind power system was built that fed electricity into the public grid. It was initiated by Dietrich Koch. Since the licensing authorities in North Rhine-Westphalia were still very restrictive in dealing with electricity generation from wind power at that time, which was largely attributed to the operation of the energy supplier RWE , the authorities were told that they wanted to operate the system to power a bunker . The system was delivered in the 20 kW version and operated at the site until 2001. Since then it has been exhibited as an exhibit in the German Wind Power Museum in Stemwede .

In 1985 the prototype of a new type of wind turbine was installed on the island of Texel . The LW18 / 80 pointed in a rotor diameter of 18 m at a power rating of 80 kW. The problem here was the use of metal sheets that caused interference with the nearby television transmitter. The system was therefore only operated during the day.

First bankruptcy

As a result of falling oil prices, the price of electricity per kilowatt hour fell again, causing the demand for wind turbines to drop sharply. Lagerwey Van der Loenhorst BV therefore had to file for bankruptcy in 1985, the year the new system type was introduced.

New start as Lagerwey Windturbine BV

One year after the bankruptcy, Henk Lagerweij dared to start again in 1986, this time without Van der Loenhorst, which is why the newly founded company was run under the name Lagerwey Windturbine BV . He was able to repay a loan of 160,000 guilders that was granted to him by the bank after numerous customers of the predecessor company (Lagerwey Van der Loenhorst) participated in a crowdfunding scheme .

In addition to the already established system types LW10 / 35 and LW18 / 80, Lagerwey Windturbine BV launched a new system of the type LW15 / 75 with either 50 kW or 75 kW nominal output. In contrast to the two previous models, this turbine had only two rotor blades instead of three, which - as the world's first wind turbines - had passive pitch control and variable speed . The LW15 / 75 in particular proved to be a best seller in the years after the Chernobyl nuclear disaster and was sold in large numbers. In addition to individual systems on farms, some wind farms with this system model were also built in the Netherlands. In northern Germany, too, many of these systems were built on farms and sewage treatment plants.

A special system was built in 1988 on the Maasvlakte in the port of Rotterdam with the Multirotor . Six units of the LW15 / 75 system were mounted on a mast with cantilevers, which together provided a nominal output of 450 kW. Due to the amount of built-in material and the increased maintenance effort compared to a single system with the same nominal output, the concept did not prevail in the following years, it stayed with this prototype system.

In 1990 the LW18 / 80 was reissued as a two- wing model, analogous to the LW15 / 75. Like the previous model, this system was also available with a 50 kW generator (as LW18 / 50). It has been installed over 600 times, mainly in the Netherlands and Germany. Two years later, the LW30 / 250, a larger system with a rated output of 250 kW, was introduced, which was installed around 300 times in the following years.

In the mid-1990s, Lagerwey switched the development of its systems to gearless models with three rotor blades. In contrast to its competitor Enercon , which also switched to the production of gearless wind turbines in the 1990s, Lagerwey used permanent magnets . The first such system model was introduced in 1995 with the LW50 / 750 . This system had a rotor diameter of 50 m and a nominal output of 750 kW. In addition to the traditional markets of the Netherlands and Germany, these systems were also sold to India and Japan . Such a system was erected in the spring of 2002 on the Gütsch near Andermatt in Switzerland at an altitude of 2332 m and at that time it was the highest wind turbine in Europe. Due to technical problems with the rotor blades and the renewed bankruptcy of Lagerwey in 2003, the system was dismantled again in 2004 and replaced by a model from the manufacturer Enercon.

In early 1998, the insolvent Dutch competitor WindMaster BV was taken over by Lagerwey, with which the company traded as Lagerwey the Windmaster BV . After the Dutch manufacturer NedWind was taken over by the Danish NEG Micon A / S in the same year, Lagerwey remained as the only Dutch manufacturer of wind turbines.

In the course of the Expo 2000 in Hanover , Lagerwey was commissioned to work on the design of the Dutch pavilion . For this purpose, Lagerwey developed a small wind turbine with a nominal output of 2.5 kW and a rotor diameter of 5 m. Six units of this type of system were installed on the roof of the pavilion.

With the Zephyros project, a larger system model followed in 2002, with which Lagerwey produced systems in the MW range for the first time. The LW72 / 2000 had with a rotor diameter of 72 m, a rated capacity of 2 MW. A prototype was erected on the Maasvlakte near Rotterdam. Also because of the insolvency in the following year, the development of this system was stopped again.

  • Early two-blade rotor turbine from Lagerwey near Hohendorf (Wolgast)

  • Lagerwey systems type LW50 / 750 at Bosseborn

  • Lagerwey small systems on the roof of the Dutch pavilion at Expo 2000 in Hanover

Lagerwey on the German market

The distribution of Lagerwey wind turbines in Germany was taken over by WISTRA GmbH from Ibbenbüren . After the systems were initially imported from the Netherlands, a production facility was also set up in Pritzwalk in Brandenburg in the 1990s , which also supplied the Polish market. The company's 500th wind turbine was produced there and installed in Frechen , North Rhine-Westphalia, in 1995 .

Second bankruptcy

Despite the economic success that Lagerwey the Windmaster BV achieved, especially with its gearless turbine types, Henk Lagerwey had to file for bankruptcy again in 2003. The reasons were increasing competitive pressure in the developing market, technical problems with some of the new plants and a lack of funding due to changes in the law in the Netherlands.

As a result, the intellectual property of the insolvent Lagerwey the Windmaster BV was sold to various Dutch companies. Wind Energy Solutions BV (WES), founded in 2003, took over the rights to the development and production of the two-wing Lagerwey systems from the 1980s in the following year. The systems, which are still successful in their segment, have been built by WES to this day, since 2013 in a different design. The 750 kW system was continued by Emergya Wind Technologies BV and later expanded to include a 900 kW model. In addition to the Netherlands, many of these systems have been installed in the United Kingdom since 2011 after the British government initiated a subsidy program for the feed-in of wind power.

New establishment as Lagerwey Wind BV

In November 2006, Henk Lagerweij founded a new company together with three partners Aart van der Pol, Albert Waaijenberg and Andre Pubanz, all of whom were previously employees of Lagerwey Windturbine BV . The Lagerwey Wind BV , supplies now also wind turbines in addition to the licenses.

Enercon bought shares in Lagerwey at the end of 2017 . A few weeks later in January 2018, however, it became public that Enercon had taken over 100% of the company's shares. Lagerwey should nevertheless continue to exist as an independent company. In the run-up to the Hanover Fair 2019, Enercon announced that it would sell the wind turbine types developed jointly with Lagerwey since 2017 under its own E series designation. The systems will be called E-147 EP5 and E-160 EP5 in future.

technology

Drawing of a L136-4.5MW
Lagerwey climbing crane

Developed by Lagerwey direct drive ( English Direct Drive ) dispensed over conventional technology of wind turbines to the transmission. The necessary magnetic excitation are permanent magnets used in the rotor. The technology is comparable to the gearless concepts from Siemens Gamesa , Vensys and Goldwind . The German Lagerwey cooperation partner Enercon , on the other hand, relies on electrical excitation power for direct drive.

Lagerwey's newest platform is the LP4 platform. The L136-4.5MW has already been implemented. This type of turbine is designed for medium wind speeds and has a nominal output of 4 to 4.5 MW with a rotor diameter of 136 m. The system is available in hub heights of 120, 132 and 166 m. The available hub heights can be achieved using modular steel towers, which are put together from individual steel segments to form a tower and bring advantages in transport logistics. The towers can be erected using conventional mobile cranes as well as a self- climbing tower crane , which was presented by Lagerwey in June 2016. The main advantage of this crane system is the reduced space requirement. While conventional crawler cranes need around 3000 m² to set up a wind turbine, the tower crane manages with 350 m² and is therefore particularly advantageous in locations where there is little space available, e.g. B. on uneven terrain or in the forest.

Plant types

Onshore wind turbines

Source: Lagerwey

Plant type L100-2.5MW L136-4.5MW L147-4.3MW L160-4.0MW
IEC wind class IIIA IS IIA IIIA
Nominal power (kW) 2,000 4,500 4,300 4,000
Rotor diameter (m) 100 136 147 160
Hub height (m) 75, 99, 135 120, 132, 155 126, 155 120, 166

Earlier plant types

Plant type Nominal power (kW) Rotor diameter (m) Remarks Production time
L93 LP2 1500-2600 93 gearless 2006-2018
L82 LP2 2000 82 gearless 2005-2018
L72 LP2 1500-2000 72 gearless 2001-2018
LW52 / 750 750 52 gearless 1997-?
LW50 / 750 750 50 gearless 1996-?
LW30 / 250 250 30th Two-bladed rotor 1994-1999
LW18 / 80 80 18th Two-bladed rotor 1992-1998
LW15 / 75 75 15th Two-bladed rotor 1991-1996
LW10 / 35 35 15th First Lagerwey facility

L82 LP2: This system was the most frequently built system on the former LP2 platform. The prototype was erected in the Grevenbroich wind test field . Like all Lagerwey LP2 systems, the L82 LP2 was gearless.

See also

Web links

Commons : Lagerwey  - collection of images, videos and audio files

Individual evidence

  1. ↑ De Ondernemer: In de rij voor een Lagerwey. February 22, 2016, accessed August 18, 2020 .
  2. ↑ a b c Lagerwey Wind BV: Geschiedenis. Retrieved August 18, 2020 .
  3. ↑ Mario Neukirch: The international pioneering phase of wind energy use, p. 193. February 22, 2016, accessed on August 18, 2020 .
  4. ↑ D. Ohlorst: Wind Energy in Germany: Constellations, Dynamics and Regulatory Potential in the Innovation Process . Dissertation, Free University Berlin 2008, VS Verlag für Sozialwissenschaften, ISBN 978-3-531-16841-8 , p. 100.
  5. ↑ Westfalen-Blatt: Mühlheider want more public. September 12, 2018, accessed August 18, 2020 .
  6. ↑ a b c d Achmed Khammas: The book of synergy. Retrieved August 18, 2020 .
  7. ^ Windpower Monthly: Lagerwey mountain turbine replaced with Enercon. September 1, 2004, accessed August 18, 2020 .
  8. ↑ IG Windkraft Österreich: Windenergie No. 26 - September 2002. Accessed on August 18, 2020 .
  9. ↑ Windpower Monthly: Lagerwey at Pritzwalk expands. June 1, 1997, accessed August 18, 2020 .
  10. ^ Windpower Monthly: Turbine 500 from Lagerwey. June 1, 1995, accessed August 18, 2020 .
  11. ↑ innov.nl: Afstammelingen van Lagerweij. Retrieved August 18, 2020 .
  12. ↑ Enercon buys shares in Lagerwey . In: Windpower Monthly , December 21, 2017. Retrieved December 21, 2017.
  13. ↑ German company takes over windmill manufacturer Lagerwey ( Dutch ) Omroep Gelderland. December 22, 2017. Retrieved April 12, 2019.
  14. ↑ Enercon buys shares in Lagerwey . In: Windpower Monthly , December 21, 2017. Retrieved December 21, 2017.
  15. ↑ Tilman Weber: Enercon: German market leader jumps onto five MW platform. In: Renewable Energies. The magazine . Retrieved April 3, 2019 .
  16. ↑ L136 4.5 MW. (PDF) Retrieved April 10, 2019 .
  17. ↑ From multi-rotor to large gearless turbine with climbing crane. In: Renewable Energies. The magazine . December 9, 2016, accessed September 23, 2018 .
  18. ↑ Lagerwey is testing a new climbing crane. In: vertical.net. September 14, 2017. Retrieved September 23, 2018 .
  19. ^ Lagerwey / Products. In: lagerwey.de. Retrieved April 10, 2019 .