Solid state battery for wind turbine blade monitor

September 24, 2021 // By Nick Flaherty
Solid state battery for wind turbine blade monitor
The smart vortex generator enables perpetual remote monitoring of wind turbine blades using solid state batteries from Ilika in the UK

Ilika and WindTak are collaborating to design a second generation Smart Vortex Generator (VG) for Wind Turbine Blades.

WindTak’s first generation VG can, when placed on the blade, increase the efficiency of turbine operation by 1-3 percent equating to a saving to the operator of up to $20,000/year.

The second generation design combines a vibration sensor, Bluetooth BLE communication and an autonomous power circuit including a 2 mAh rechargeable solid state battery and vibration energy harvesting from the vibrations of the blade.

The smart VG can sense changes in the vibration frequency spectrum of the blade using a Battery 3.5V accelerometer from Analog Devices and provide a signature related to potential cracks, delamination and erosion. Using energy harvesting from the blade and the 2 mAh Stereax solid state battery from Ilika provides perpetual wireless monitoring through a nRF52840 BLE 5.2 chip from Nordic Semiconductor.

The data from the sensor can be used for preventive maintenance to avoid loss of operation until the next scheduled maintenance stop.

www.ilika.com

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