FLEHAP device-EHLab srl

EHLab srl



Principle of the FLEHAP device.

The main solution proposed by EHLab is the FLEHAP device (Fluttering Energy Harvester for Autonomous Powering, patent pending). It exploits the Fluttering effect: when a moving fluid invests an elastic structure, a part of the kinetic energy is transferred to the structure that, under appropriate conditions, is able to perform oscillations even of large entities.These oscillations can be converted into electrical energy by an electromagnetic coupling.

EH_t2fig2Airflow device.

A centimetric device can produce several mW of power at low wind speed (more than 20 mw at 5.5 m/s). It is able to work in a wide range of wind speed, while it can be configurated to limit its oscillation amplitude in case of storms in order to overcame its failure.
Shape, dimensions and configurations can be tailored depending on the customer requirements.

FLEHAP advantages

  • low cost
  • robust
  • customizable
  • stackable


"Technology for Human beings", funded by Prysmian Italy and Human Foundation 2014 - 3 prize

Smart Cup Liguria 2015 - 1 prize

Start Cup UNIGE 2015 - 1 prize

Smart Cup Italy 2015 - finalist


Boccalero, G.; Boragno, C.; Olivieri, S.; Mazzino, A. 
Power harvesting by electromagnetic coupling from wind-induced limit cycle oscillations 
SMART MATERIALS AND STRUCTURES (2017), 26, 095031 doi.org/10.1088/1361-665X/aa78e2

Olivieri, S.; Boccalero, G.; Mazzino, A.; Boragno, C.
Fluttering conditions of an energy harvester for autonomous powering
RENEWABLE ENERGY (2017) 105, 530 doi: 10.1016/j.renene.2016.12.067

Boccalero, G.; Boragno, C.; Caviglia, D. D.; Morasso, R.
FLEHAP: A Wind Powered Supply for Autonomous Sensor Nodes
JOURNAL OF SENSOR AND ACTUATOR NETWORKS (2016) 5, 4 doi: 10.3390/jsan5040015

Boragno, C.; Boccalero, G.
A new energy harvester for fluids in motion
Proceedings of SPIE - Conference on Active and Passive Smart Structures and Integrated Systems
MAR 09-12, 2015 San Diego, CA (2015) 9431 , 94310G doi: 10.1117/12.2084591

Orchini, A.; Mazzino, A.; Guerrero, J.; Festa, R.; Boragno, C.
Flapping states of an elastically anchored plate in a uniform flow with applications to energy harvesting by fluid-structure interaction
PHYSICS OF FLUIDS (2013) 25 , 9 , 097105 doi: 10.1063/1.4821808

Boragno, C.; Festa, R.; Mazzino, A.
Elastically bounded flapping wing for energy harvesting
APPLIED PHYSICS LETTERS (2012) 100, 25 , 253906 doi: 10.1063/1.4729936