Patent · US Active

Wind turbine blade having a shaped stall fence or flow diverter

US9945352B2 · kind B2 · utility

1Cited by

6References

18Claims

0Family size

Assignee

LM WP PATENT HOLDING A/S · DK

Inventors

Arun Kumar · Farmington Hills, US
Ashish Singh · Munich, DE

Key dates

Filing date	Jul 24, 2013
Grant date	Apr 17, 2018
Priority date	—
Expiry date	Jul 20, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E10/72
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A wind turbine blade is described wherein at least on planar member is provided on the blade surface, where the planar member is arranged such that it extends at an angle to the chord of the blade. The planar member acts to re-direct airflow over the blade, to improve wind turbine performance. The planar member may be a stall fence provided towards the blade root end, further acting to divert airflow towards the root end of the blade to prevent separation of attached airflow. Additionally or alternatively, the planar member may be a flow diverter provided towards the blade tip end, to increase airflow in the tip region for increased performance and/or to disrupt the formation of tip vortices.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.