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Experiences and results from Elkraft 1 MW wind turbine

Abstract

The Elkraft 1 MW Demonstration wind turbine was at the time of installation in 1993 the largest stall controlled wind turbine in the world. It was constructed to allow accurate comparison of two different forms of operation: pitch control and stall control. A comprehensive programme for the investigation of the two operation modes was established. This paper presents the main experiences from five years of operation and measurements. For a three-year period the wind turbine was in operation in stall controlled mode. During this period the turbine faced problems of various significance. Especially lightning strikes and unusually poor wind conditions caused delays of the project. In early 1997, the wind turbine was modified to enable pitch controlled operation. The gearbox ratio was changed in order to allow higher rotor speed, the hydraulic system was altered and new control software was installed. Tests were carried out successfully during the spring of 1997 and the wind turbine has since been operating as a pitch controlled wind turbine. The most significant events and problems are presented and commented in this paper along with results from the measurement programme. The results cover both stall and pitch controlled operation and include power curves, annual energy  More>>
Authors:
Raben, N; Jensen, F V; [1]  Oeye, S; [2]  Markkilde Petersen, S; Antoniou, I [3] 
  1. SEAS Distribution A.m.b.A., Wind Power Dept., Haslev (Denmark)
  2. DTU, Inst. for Energiteknik, Lyngby (Denmark)
  3. Risoe National Lab., Wind Energy and Atmospheric Physics Dept., Roskilde (Denmark)
Publication Date:
Mar 01, 1999
Product Type:
Conference
Report Number:
RISO-R-1114(EN); CONF-990314-
Reference Number:
SCA: 170602; PA: DK-99:001432; EDB-99:087320; SN: 99002098338
Resource Relation:
Conference: EWEC`99. European wind energy conference, Nice (France), 1-5 Mar 1999; Other Information: PBD: Mar 1999; Related Information: Is Part Of Contributions from the Department of Wind Energy and Atmospheric Physics to EWEC `99 in Nice, France; Larsen, Gunnar C.; Westermann, Kirsten; Noergaard, Per [eds.]; PB: 256 p.
Subject:
17 WIND ENERGY; DEMONSTRATION PLANTS; HORIZONTAL AXIS TURBINES; POWER RANGE 01-10 MW; CONTROL; PERFORMANCE; INCLINATION; POWER COEFFICIENT; MECHANICAL PROPERTIES; PRODUCTION; WIND POWER; STALL
OSTI ID:
679650
Research Organizations:
Risoe National Lab., Roskilde (Denmark). Wind Energy and Atmospheric Physics Dept.
Country of Origin:
Denmark
Language:
English
Other Identifying Numbers:
Other: ON: DE99747779; ISBN 87-550-2542-0; TRN: DK9901432
Availability:
OSTI as DE99747779
Submitting Site:
DK
Size:
pp. 237-242
Announcement Date:

Citation Formats

Raben, N, Jensen, F V, Oeye, S, Markkilde Petersen, S, and Antoniou, I. Experiences and results from Elkraft 1 MW wind turbine. Denmark: N. p., 1999. Web.
Raben, N, Jensen, F V, Oeye, S, Markkilde Petersen, S, & Antoniou, I. Experiences and results from Elkraft 1 MW wind turbine. Denmark.
Raben, N, Jensen, F V, Oeye, S, Markkilde Petersen, S, and Antoniou, I. 1999. "Experiences and results from Elkraft 1 MW wind turbine." Denmark.
@misc{etde_679650,
title = {Experiences and results from Elkraft 1 MW wind turbine}
author = {Raben, N, Jensen, F V, Oeye, S, Markkilde Petersen, S, and Antoniou, I}
abstractNote = {The Elkraft 1 MW Demonstration wind turbine was at the time of installation in 1993 the largest stall controlled wind turbine in the world. It was constructed to allow accurate comparison of two different forms of operation: pitch control and stall control. A comprehensive programme for the investigation of the two operation modes was established. This paper presents the main experiences from five years of operation and measurements. For a three-year period the wind turbine was in operation in stall controlled mode. During this period the turbine faced problems of various significance. Especially lightning strikes and unusually poor wind conditions caused delays of the project. In early 1997, the wind turbine was modified to enable pitch controlled operation. The gearbox ratio was changed in order to allow higher rotor speed, the hydraulic system was altered and new control software was installed. Tests were carried out successfully during the spring of 1997 and the wind turbine has since been operating as a pitch controlled wind turbine. The most significant events and problems are presented and commented in this paper along with results from the measurement programme. The results cover both stall and pitch controlled operation and include power curves, annual energy production, structural loads, fatigue loads etc. (au) 10 refs.}
place = {Denmark}
year = {1999}
month = {Mar}
}