User manual

5.1.2 Wind Turbine Insensitive to Adjust Rotor Direction
1) HYE wind turbine mainly adopts tail yawing to adjust the blades direction, if it is not sensitive to adjust blades direction, reasons may be: the turbine alternator shaft is
damaged, or the tower is out of plumb.
2) The tower flange is not matching with the flange on turbine, which cause the interference to adjust the wind turbine facing direction. ① check if the flange is provided by HYE
or in accordance with HYE flange drawing; ② check if the flange on turbine is loose, and if the axis of rotation fall into the tower.
3) The wind turbine is in a swinging or seeking status: ① the wind turbulence caused by natural factors is normal; ② improperly located, if turbulence is caused by buildings,
wind turbine should re-locate another good position.
5.1.3 Rotation seed Dramatically Decreases
Wind turbine rotation speed dramatically decreases under heavy wind condition, which can be mainly divided into normal deceleration and abnormal deceleration:
1) Turbine normal deceleration is due to wind turbine over-speed protection, for example, dump load, electromagnetic braking and blades aerodynamic braking. These are regular
protection ways to protect the wind turbine and the whole system in high wind.
2) Turbine abnormal deceleration is mainly due to friction between rotor and stator, bearing damaged, generator burned, blades deformation or damaged, turbine or pole shake
heavily, in case of these situations, please disconnect wind turbine from controller and put three-phase in short circuit mode, then contact supplier to solve the problem.
5.1.4 Generator Abnormal AC Output
1) Generator abnormal which is due to long connecting wire or small wire size which results in high pressure drop, therefore, selection of wire size should refer to 6.5 regulations
and requirements.
2）Check if the wind turbine three-phrase output performs well, check the voltage of each two of the output phases are balanced.
3) Generator three-phase output voltage is imbalanced. Voltage unbalanced rate shall not exceed 10% (same wind speed or rotational speed) in accordance with related national
standards, if exceeded, the generator fails, please contact supplier to solve the problem.
4) Generator has no output voltage under heavy wind condition, check whether generator is under short-circuit mode or not (reference: 5.2) and three-phase resistance values is
balanced or not (uncharged operation), if imbalanced, the generator fails, please contact supplier to solve problems.
WARNING: Never check the wind turbine while the blades are spinning or on a windy day.
27