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Sensor Development for a Wind Turbine Bearing Cage. David Arseneau Research Assistant. Outline. Motivation Schematic of a Wireless Strain Telemeter Circuit Diagram Placement of Wireless Strain Telemeter on a Wind Turbine Bearing Cage Future Work. Motivation.
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Sensor Development for a Wind Turbine Bearing Cage David Arseneau Research Assistant
Outline • Motivation • Schematic of a Wireless Strain Telemeter Circuit Diagram • Placement of Wireless Strain Telemeter on a Wind Turbine Bearing Cage • Future Work
Motivation • Costs ~$500,000 to replace each bearing in a wind turbine • Current wind turbine bearing cage under investigation deforms 74mm
Abaqus Results Undeformed cage Deformed cage (74mm at max point) Deformed shape plotted with the undeformed shape
Placement of Wireless Strain Telemeters • Wireless strain telemeters will be mounted on the bearing cage • Strain gauge in the axial direction • Strain gauge in the tangential direction • Printed Circuit Board (PCB) or Kapton will be used to populate the sensor
Schematic of Wireless Strain Telemeter Circuit Diagram R3= 5.0kΩ R2= 1.5kΩ C2= 8.2pF Transistors Strain Gauge Antenna C=8.2pF R4= 1.5kΩ R5= 1.0kΩ R6= 1.0kΩ Battery
Strain Telemeter on a Wind Turbine Bearing Cage Circuit components on PCB or Kapton Tangential Strain Gauge Axial Strain Gauge Battery
Future Work • Develop new custom wireless strain telemeter • Install on wind turbine bearing cage • Test under static condition • Evaluate in actual wind turbine