Solid state battery for wind turbine blade monitor

Solid state battery for wind turbine blade monitor

Technology News |
By Nick Flaherty

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.

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