... and has stable control; 3-25m/s wind speed, wind turbine can run smoothly.3. Direct drive permanent magnet generator, low startup ... wind turbine rotating speed slow down. Close loop control, reliable regulation.Pitch control mechanism is sensitive, reliable, and can be used ... has stable control; 3-25m/s wind speed, wind turbine can run smoothly.3. Direct drive permanent magnet generator, low startup ...