The requirements for pitch and yaw brakes include high reliability, long maintenance cycles, resistance to environmental influences, and a tight braking-torque tolerance. For pitch drives, one brake manufacturer has developed spring loaded devices as holding brakes that have to perform in a particular way in emergencies, even after a failure. The brake casing is encapsulated.…
Brakes for pitch and yaw drives
Emergency braking requirements of today’s large wind turbines under maximum wind conditions are comparable to those of a 40-ton mining truck driving down a 25% grade at 87 mph with a cliff just ahead. To meet these demanding requirements, Warner Electric , South Beloit, Wisc., an Altra Industrial Motion company, modified its ERS series of…