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Test Bench

Test specification

  • Fatigue Test: consists on a static test to simulate the life of the different parts of the brakes including seals, pistons and brake housing. This function is controlled by the PLC providing different cycles at high pressure (180 bar) and low pressure (20-40 bar) simulating a real application on a wind turbine.
  • Friction Material Wear Rate: consists in a dynamic test where hydraulic pressure is applied into the brake(20-40 bar) and the cylinder provides a movement to the plate/disc simulating the real Yaw movement in the wind turbine, after XXX cycles wear rate of different friction materials can be verified.
  • Friction Material Coefficient: consists of a dynamic test and static test:
    • i. Static test, high pressure is applied into the brake (standard parking position in a wind turbine) and gradually the pressure is increased in the cylinder, when the plate/disc starts the movement PLC will calculate the static friction coefficient.
    • ii. Dynamic test: Hydraulic pressure is applied into the brake (20-40 bar) and the cylinder provides a movement to the plate/disc simulating the real Yaw movement in the wind turbine, PLC will calculate dynamic friction coefficient.
  • Noise/Vibration Test: consists on the application of hydraulic pressure into the brake (20-40 bar) and the cylinder provides a movement to the plate/disc simulating the real Yaw movement in the wind turbine, during such movement noise/vibration appears and it’s measured by a vibration control device.