Validating the 3E FLiDAR

Mike Courtney and Rozenn Wagner,

DTU Wind Energy

VindKraftNet Meeting

Lyngby, May 2012.

The 3E FLiDAR

• Leosphere V2 Windcube with modified software

• Standard buoy

• Mechanical lidar

DTU Wind Energy, Technical University of Denmark

• Mechanical lidar stabilising system

• Solar and wind power system

2 15 May 2012

Our role

• The initial results seemed too good to be true.

• DTU Wind Energy hired to make an independant validation of the test results.

DTU Wind Energy, Technical University of Denmark3 15 May 2012

The test

• Compare the FLiDAR with a fixed Windcube lidar on a nearby radar platform

DTU Wind Energy, Technical University of Denmark4 15 May 2012

Where: Off the Belgium coast

DTU Wind Energy, Technical University of Denmark5 15 May 2012

20 km from the coast, 1.2km from each other

DTU Wind Energy, Technical University of Denmark6 15 May 2012

When and the test conditions

• September – October 2011

Wind speeds Directions Wave heights

DTU Wind Energy, Technical University of Denmark7 15 May 2012

�

�

�

�

�

�

�

��

�

�

�

��

�

�

�

�

�

�

���

�

�

��

�

�

��

�

�

�

�

�

�

�

�

���

�

�

�����������������

0 5 10 15 20 25 300

1

2

3

4

spd150 �100m �m�s�

occ�bin

���

���������������

���

�

�

��

����

���

��

�

�

�

��

��

���

��

�

�

�

�

�

�

�

�

��

�

�

�

����

��

�

�

�

�������

�����������������

����

���

����������������������

��

�

��

��

�

�

������

�

��

�

�

���

�

��

�

�

����������

���

�

��

�

�

��

�

�

���

��

��������

�

�

�

�

�

�

�

�

��

�

�

�

�

�

�

��

���

��

�

�

�

�

�����

�

�����

0 50 100 150 200 250 300 3500

2

4

6

8

���

occ�bin

���Wind speeds Directions Wave heights

20 m/s 250 deg 300 cm

Speed comparisons

DTU Wind Energy, Technical University of Denmark8 15 May 2012

Zoom at 120m

DTU Wind Energy, Technical University of Denmark9 15 May 2012

Direction comparisons

DTU Wind Energy, Technical University of Denmark10 15 May 2012

Direction: Zoomed at 120m

DTU Wind Energy, Technical University of Denmark11 15 May 2012

Conclusions

• FLiDAR measures wind speed very well.

• FLiDAR measures wind direction less well – work in progress.

• As long as the engineering holds, the wind ressource can now be measured at any water depth.

DTU Wind Energy, Technical University of Denmark

• Finaly something useful for a lidar !?

12 15 May 2012

For more information

Contact Rory.Donnelly@3e.eu

DTU Wind Energy, Technical University of Denmark13 15 May 2012

Acknoweldgements

• 3E FLiDAR team:

– Rory Donnelly

– Thomas Duffey

– Thanos Kyriazis

DTU Wind Energy, Technical University of Denmark14 15 May 2012