Enercon

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Enercon GmbH
GmbH
IndustryWind power industry
Founded1984 (1984)
FounderAloys Wobben
Headquarters,
Key people
Hans-Dieter Kettwig (Managing Director)
ProductsWind turbines
Number of employees
~18,000
Websitewww.enercon.de

Enercon GmbH, based in Aurich, Lower Saxony, Germany, is the fourth-largest wind turbine manufacturer in the world and has been the market leader in Germany since the mid-nineties.[1] Enercon has production facilities in Germany (Aurich, Emden and Magdeburg), Sweden, Brazil, India, Canada, Turkey and Portugal. In June 2010, Enercon announced that they would be setting up Irish headquarters in Tralee.[2]

As of December 2017, Enercon had installed more than 26,300 wind turbines, with a power generating capacity exceeding 43 GW.[3] The most-often installed model is the E-40, which pioneered the gearbox-less design in 1993.[4] As of July 2011, Enercon has a market share of 7.2% world-wide (fifth-highest) and 59.2% in Germany.[5]

Currently Enercon supplies wind turbines to the British electricity company Ecotricity, including one billed as the UK's most visible turbine, an E-70 at Green Park Business Park.[6][7]

Enercon Headquarter in Aurich

Technologies[edit]

Enercon wind turbines have some special technical features compared to turbines of most other wind turbine manufacturers . Characteristic is the gearless propulsion concept, on which Enercon has pioneered this technology since 1993. The E-40/500 kW series was the first gearless generation of turbines. Earlier Enercon facilities had a transmission train. The hub with the rotor blades is gearless directly connected to the rotor of the ring generator (direct drive). The rotor unit rotates about a front and rear main bearing about a fixed axis (bearings). Thus, the speed of the rotor is transmitted directly to the high-pole synchronous generator, wherein the rotor rotates in the stator (inner rotor), differently. The Enercon generator is installed without permanent magnets, thus allowing the company to not rely on rare-earth metals. However, grid losses accompany the provision of electrical excitation power. Compared to transmission systems, both the speed of the rotating components and the mechanical load changes over the service life are lower. Depending on the wind speed, the speed is variable between 18-45 RPM for the E-33 and 5-11.7 RPM for the E-126, while for a gearbox a generator speed of about 1500 / min is at Rated power is achieved. The large Enercon generators in turn lead to high tower head masses, constructive and logistical challenges.

The Enercon systems are visually easy to distinguish from the systems of other manufacturers. The nacelles of the plants have been drop-shaped since 1995/96. The design of this unique gondola/teardrop was developed by the British architect Norman Foster , whom is also notable for designing the dome of the Berlin Reichstag . In Germany and many other countries, the tower carries coloured green rings above the foundation, which are getting brighter from bottom to top. On islands, the manufacturer alternatively offers a gradation in blue, as it was implemented on the island of Borkum . The NCS grading is intended to better integrate the plant towers into the horizon. The rotor blades were the only ones on the market with blade tips similar to the winglets on aircraft, the technical term for this being "Tips".[8][9]

[10] [4]

In 2008, the first E-126 turbines (successor of the E-112) were installed at various sites throughout Germany and Belgium, including the Estinnes wind farm (consisting of eleven E-126 turbines) in Belgium.[11] Although the E-126 turbine was initially developed with a power rating of 6 MW, it has since been upgraded to 7.5 MW. The E-82 turbine was also upgraded and is available in 2, 2.3, and 3 MW versions.[12]

Currently Enercon does not offer or supply wind turbines to offshore projects and has at times expressed skepticism about offshore wind parks.[13][14] Enercon was rumored to have been ready to supply turbines to Germany's Alpha Ventus offshore wind farm and to a near-shore park near Wilhelmshaven but did not do so.[15]

Turbines[edit]

Note: wind turbine designations in brackets mean the turbine either temporarily unavailable. or has been taken off sale permanently.

Model Number Rated Power Output Rotor Diameter (meters) Hub Height (meters) Notes Source(s) Number installed
(E-10/E-12) 30 kW 10 Developed in 2007, but unknown whether it's still being produced. 3
(E-15/16) 55 kW 15/16 Developed 1984, no longer available [4][16][17] 46
(E-17/E-18) 80 kW 17/18 Developed and installed 1988, no longer available [4][18] 158
(E-32) 100 - 300 kW 32 Developed and installed 1988, no longer available [4][19] Unknown
E-33 330 kW 33.4 37, 44, 50 [4][20] 84
(E-40) 500 kW (OG.), 600 kW (Rev.) 40 First gearless drive, no longer available [4][21][22] 5879 total (1887 original, 3992 revised)
E-44 900 kW 44 45, 55 [4][20] 563
E-48 800 kW 48 50, 55, 56, 60, 65, 76 [4][20] 1878
E-53 800 kW 52.9 60, 73 Prototype developed 2006 [4][20] 1240
(E-58) 1 MW 58 Prototype installed in 1998 - replaced by E-48, henceforth no longer available 225
(E-66) 1.5 MW - 2.0 MW 66 & 70 Prototype developed 1995, no longer available 2486
E-70 2.3 MW 71 57, 58, 64, 70, 74.5, 84, 98, 113 Direct drive [4][20] 4360
E-82 2 MW, 2.3 MW, 3MW 82 78, 84, 98, 108 Direct drive [4][20] 3146
E-92 2.3 MW 92 84, 98, 108, 138 Direct drive
[23] ~ 250[citation needed]
E-101 3 MW 101 99, 124, 135, 149 Direct drive
Prototype installed June 2011
[4][20] ~1500[citation needed]
E-103 EP2 2.35 MW 103 98 or 138 Direct drive - two prototypes installed in France in 2017 2[citation needed]
(E-112) 4.5 - 6 MW 112 & 114 108, 124 Replaced by E-126, no longer available [4][24][25] 9
E-115 3.0 MW 115 92.5-149 Direct drive [26] ?[citation needed]
E-126 7.56 MW (first version 6.0 MW) 126 135 Prototype developed October 2007 [4][20] 95 as of autumn 2016
E-126 EP3 4.0MW 4.0 MW 126 86, 116, or 135 Based on a different platform to other Enercon turbines [27] 1 near Kirch Muslow
E-138 EP3 3.5MW 139 81, 111, 131, or 160 Based on a different platform to other Enercon turbines [28] Yet to be installed
E-126 EP4 4.2MW 4.2 MW 126 135 Designed for low-wind sites [29] 1 prototype installed near Lelystad[citation needed]
E-141 EP4 4.2MW 4.2 MW 141 129 or 159 Prototype prepared for late 2016, based on E-126 EP4. 30-year design life [30] TBA[citation needed]

Patent dispute[edit]

Enercon was prohibited from exporting their wind turbines to the US until 2010 due to alleged infringement of U.S. Patent 5,083,039 .[31][32] In a dispute before the United States International Trade Commission, Enercon did not challenge the validity of the US patent but argued that their technology was not affected. The ITC decided that the patent covered the technology in question and banned Enercon turbines from the US market until 2010.[33] Later on, a cross patent agreement was made with the competitor General Electric, the successor of Kenetech, after similar claims of Enercon against GE. According to a NSA employee detailed information concerning Enercon was passed on to Kenetech via ECHELON.[34] The aim of the alleged industrial espionage against Enercon was the forwarding of details of Wobben's generator technology to a US firm.[35]

Gallery[edit]

Estinnes windfarm[edit]

The 11 turbine Estinnes Wind Farm in July 2011 before completion...
...and in October of 2011, two months right after completion. With each turbine producing 7.58MW, the total energy output of Estinnes Windpark is 83.4MW.

See also[edit]

References[edit]

  1. ^ Simon, Hermann: Hidden Champions of the 21st Century : Success Strategies of unknown World Market Leaders. London: Springer, 2009.- ISBN 978-0-387-98147-5
  2. ^ "55 IT and wind jobs created in Tralee". June 2010. Archived from the original on 28 March 2012. Retrieved 15 July 2011.
  3. ^ "Enercon at a Glance". 2011. Retrieved 15 July 2011.
  4. ^ a b c d e f g h i j k l m n o "Enercon Chronology". 2011. Retrieved 15 July 2011.
  5. ^ "Market Shares". 2011. Retrieved 15 July 2011.
  6. ^ "Ecotricity: Our Partners". Retrieved 15 July 2011.
  7. ^ "Green Park, Reading: The UK's Most Visible Wind Turbine". Retrieved 15 July 2011.
  8. ^ |url = http://www.enercon.de/en-en/753.htm |title = Annular generator |author = Enercon |date=July 2002 |language = English |accessdate = 15 July 2011}}
  9. ^ |url = http://www.verivox.de/nachrichten/enercon-errichtet-groesstes-windrad-der-welt-bei-magdeburg-3027.aspx |title = Enercon errichtet grösstes Windrad der Welt bei Magdeburg |author = dpa (Deutsche Presse-Agentur) |date=July 2002 |language = German |accessdate = 15 July 2011}}
  10. ^ "REpower Systems SE: 5M" (in German). Archived from the original on 28 September 2011. Retrieved 15 July 2011.
  11. ^ "The Wind Power Database: Estinnes Wind Farm". 2011. Retrieved 15 July 2011.
  12. ^ "ENERCON Wind Energy Converters, Product Overview" (PDF). 2011. Retrieved 15 July 2011.
  13. ^ "Windblatt" (PDF). March 2009. Retrieved 15 July 2011.
  14. ^ "'We're not afraid of offshore, but we decided to put 150% into onshore'". Recharge. 2016 [2015]. Retrieved 23 February 2017.
  15. ^ "More MW/t, the offshore imperative.(megawatt thermal)(Enercon (Germany))". March 2011. Retrieved 15 July 2011.
  16. ^ "The Wind Power: Database (Enercon E-15)". September 2010. Retrieved 15 July 2011.
  17. ^ "The Wind Power: Database (Enercon E-16)". September 2010. Retrieved 15 July 2011.
  18. ^ "The Wind Power: Database (Enercon E-17)". September 2010. Retrieved 15 July 2011.
  19. ^ "The Wind Power: Database (Enercon E-32)". September 2010. Retrieved 15 July 2011.
  20. ^ a b c d e f g h "Enercon Wind Energy Converters: Technology and Service" (PDF). Retrieved 15 July 2011.
  21. ^ "The Wind Power: Database (Enercon E-40, 500 kW)". September 2010. Retrieved 15 July 2011.
  22. ^ "The Wind Power: Database (Enercon E-40, 600 kW)". September 2010. Retrieved 15 July 2011.
  23. ^ http://www.enercon.de/p/downloads/WB_01-2012_en_web.pdf
  24. ^ "The Wind Power: Database (Enercon E-112, 4500 kW)". September 2010. Retrieved 15 July 2011.
  25. ^ "The Wind Power: Database (Enercon E-112, 6000 kW)". September 2010. Retrieved 15 July 2011.
  26. ^ E-115 / 2,500 kW
  27. ^ https://www.enercon.de/en/products/ep-3/e-126-ep3/
  28. ^ https://www.enercon.de/en/products/ep-3/e-138-ep3/
  29. ^ https://www.enercon.de/en/products/ep-4/e-126-ep4/
  30. ^ "Enercon raises the bar". 2017-04-14. Retrieved 2017-12-22. (Subscription required (help)).
  31. ^ "Enercon vs. International Trade Commission and Zond Energy Systems". Retrieved 15 July 2011.
  32. ^ Space Daily Staff Writers (April 2008). "The Greening of Patent Litigation". Retrieved 15 July 2011.
  33. ^ "In the matter of certain variable speed wind turbines and components thereof" (PDF). U.S. International Trade Commission. November 1996. Retrieved 8 May 2017.
  34. ^ Schröm, Oliver (30 October 1999). "Verrat unter Freunden" [Treachery among friends] (in German). Die Zeit (Zeit Online). Archived from the original on 20 April 2010.
  35. ^ Echelon Rapport, EU Parliament

External links[edit]