Is over-speed control effective in fixed pitch wind turbines?
Over-speed control in fixed pitch turbines is always a challenge, and it comes at a price. Since their blades lack pitch adjustment, fixed pitch turbines must employ stall, furling, or electronic braking methods to achieve over-speed control. These are adequate solutions, but they also give up on virtually all the energy contained in winds above the design speed and a significant amount of energy in winds below it.