rotary encoder in wind turbine design ！

rotary encoder in wind turbine design     

Encoder technology is the key to get wind
Rotary encoder plays a very important role in the wind energy industry, which provides for the use of the current turbine is very dynamic and flexible control systems essential for high-resolution feedback. Select the appropriate encoder will be able to greatly enhance the ability of the system to the best power output operation, and maximize return on investment.


US Lawrence Berkeley National Laboratory data show that in 2008, the US wind energy production surged 51 percent, the new capacity of 8545MW, new investment over 16 billion US dollars. New off-grid turbines 7800 units and 1292 units turbine grid. The average yield of each turbine is capable of approximately 1.7MW. Wind can increase yields up by about 46% compared to 2007.


Sectional view of a wind turbine figure shows a common control system shown in Figure 1. Such systems typically use five encoder, which provides feedback to maintain the generator performance under different wind conditions and different load requirements.

1 wind turbine control system used in the figure up to 5 Encoder


● With the change in wind conditions, the blade pitch control system maintains the speed of the rotor.


● yaw control system (azimuth) according to the wind to control the rotation of the entire generator.


● generator speed by tracking generator shaft revolutions per minute (rpm) of the monitoring carried out

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