Wind Generator Output Power Smoothing by Using Pitch Controller

S. M. Muyeen; Mohd. Hasan Ali; Rion Takahashi; Toshiaki Murata; Junji Tamura

doi:10.15866/irecon.v10i5.23405

Wind Generator Output Power Smoothing by Using Pitch Controller

S. M. Muyeen^(1*), Mohd. Hasan Ali⁽²⁾, Rion Takahashi⁽³⁾, Toshiaki Murata⁽⁴⁾, Junji Tamura⁽⁵⁾

^(*) Corresponding author

Authors' affiliations

DOI: https://doi.org/10.15866/irecon.v10i5.23405

Abstract

It is well known that pitch controller can maintain output power of wind generator at rated level when wind speed is above the rated speed. Moreover, it can also enhance the transient stability of wind generator when severe network disturbance occurs in power system. In this paper, another new feature of pitch controller is analyzed. As wind speed varies randomly the output power of wind generator fluctuates continuously. This fluctuation can be minimized significantly by changing the blade pitch angle of wind turbine. Our proposed pitch controller can do this well. The wind generator output power loss and smoothness level are analyzed when the proposed pitch controller is used with wind turbine. Comparative studies are carried on using three types of input command power of the controller. Some technical points of mechanical servo system of wind turbine are emphasized to reduce the load of wind turbine. Moreover, different types of wind speed patterns are used to validate the effectiveness of the proposed controller. Simulation results show that the wind power fluctuation can be reduced significantly by using the proposed fuzzy logic based pitch controller.
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Keywords

Exponential Moving Average; Fuzzy Logic Controller; Mechanical Dead Zone; Simple Moving Average; Pitch Controller; Wind Generator; Power Smoothing

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References

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