Scientific advances and innovation

  • Wireless pressure sensors
  • E-penon sensors for the detection of flow separation
  • Actif actuators instead of passives
  • Innovative actif sensor/actuator add-on system
  • Post-testing of  the add-on on the wind tunnel with aeraulic perturbations (low cost)

Expected technical and economic impact

  • Improve the existing blade aerodynamic with the help of an active add-on (envelop that includes a sensor/actuator dynamic couple adjusted on the surface of the blade).
  • First validation of the add-on which includes a dynamic fluidic actuator developed in the LHEEA laboratory and an Epenon sensor developed by MerAgitée, in the LHEEA wind tunnel (intermediate scale)
  • First validation of wireless unsteady pressure measurements that can be integrated in a full scale add-on in degraded weather conditions at the climatic CSTB wind tunnel.
  • Development of a dynamic perturbation system at the inlet of the LHEEA laboratory wind tunnel for realistic atmospheric conditions.
  • Parts of the equipment can have a short-term exploitation for EMR operators (flow separation E-penon type sensors, wireless wall pressure sensors, wind tunnel facility with aeraulic perturbations for sensors and actuators tests).
  • The complete add-on system will have a short-term exploitation mainly in research activities. Then, this system will be integrated in a research/innovation project for attaining a new level of technology readiness level (TRL).

Key project milestones

  • January 2018 - Start of the project
  • January 2019 - Tests of the add-on in the LHEEA wind tunnel without perturbations
  • First semester 2019 - Tests of the wireless unsteady pressure sensors and the transmission system in the climatic wind tunnel of CSTB
  • January 2020 - Tests of the add-on in the LHEEA wind tunnel with perturbations

Demonstrator

  • add-on system used in closed-loop at the intermediate scale (LHEEA aerodynamic wind tunnel)
  • Full scale wireless unsteady pressure sensors system (CSTB climatic wind tunnel)

Results

NEW PERTURBATION SYSTEM – « CHOPPER »

Pertubation system at the inlet of LHEEA wind tunnel

 

CAMPAIGN OF MEASUREMENTS HIGH SPEED PIV

LHEEA wind tunnel

Vector field from High Speed PIV
(LHEEA wind tunnel)

 

CAPTEUR E-PENON :

Static sensor response

Evaluation e-TellTale dynamic response

 

JETS PULSES :

Aero load oscillation control

Add-ons from MerAgitée

 

Publications and papers published

  • Jaunet V. , Braud C., Guilmineau E. and D. Paucelle (2017) « Dynamics of lift controlled
    wind turbine blade » Wind Energy Science Conference, June, DTU (Danemark).
  • Jaunet V. and Braud C. (2017) «Dynamics of a pre-stalled windturbine blade using control of circulation at the trailing-edge ». CFM, Lille, France.
  • Danbon F., Voisin, D. Desjoyeaux, M. (2015) « Aerodynamics optimization study on a rigid 2D wing sail in a wind tunnel» The 5 rd High Performance Yacht Design Conference, March 9 th -11 th , Auckland, New-Zeland.
  • Soulier A., D. Voisin, F. Danbon, C. Braud (2017) « Electronic TellTale (E – penon) sensor to detect flow separation on wind-turbine’s blades » Wind Energy Science Conference, June , DTU (Danemark).
  • Examples of wind-turbineoriented aerodynamic challenges, Sandrine AUBRUN, Caroline BRAUD, Boris CONAN, Benyamin SCHLIFFKE (Centrale Nantes), French American Innovation Day 2019, March 18-19, Boston – Download the presentation

Prospects

  • Equipment prior to a future Weamec project → towards TRL 4-5.
  • Wind turbine prototypes with add-on tests on the Bouin field test site.
  • First full scale tests on an onshore wind turbine of VALOREM, instrumented by the group of scientific interest LiRGeC (IFSTTAR, CSTB, GEM).
  • In dedicated programs (Europe, CPER …) full scale off-shore tests on the floating wind turbine from SEMREV (European project FLOATGEN).
  • First market : off-shore wind parks in the Pays-de-Loire/Bretagne region at he time horizon 2021 (off-shore park of Saint-Nazaire, two islands or the floating experimental park of Groix island…).