Open AccessDesign of a Pitch Controller for a Wind Turbine Using Hybrid Mean-Variance Mapping Optimization
Author(s) -
Sasmita Behera,
Subham Sahoo
Publication year - 2021
Publication title -
ecti transactions on electrical eng. / electronics and communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.148
H-Index - 7
ISSN - 1685-9545
DOI - 10.37936/ecti-eec.2021193.222600
Subject(s) - control theory (sociology) , particle swarm optimization , controller (irrigation) , wind power , turbine , wind speed , pitch angle , pitch control , power (physics) , computer science , engineering , algorithm , control (management) , physics , mechanical engineering , electrical engineering , quantum mechanics , artificial intelligence , geophysics , meteorology , agronomy , biology
A variable-speed wind energy conversion system (WECS) has the advantage of extracting more power from the time-varying wind. To achieve this, the pitch angle is controlled to maintain the speed of the turbine and hence the generated power at a constant level, while reducing mechanical stress on the turbines. In this work, a proportional-integral (PI) controller is used for pitch angle control. The optimal PI control gains and are tuned by the hybrid mean-variance mapping optimization (MVMO-SH) technique, particle swarm optimization (PSO), and a genetic algorithm (GA). Different fitness evaluation criteria and optimization techniques are compared, and the performances of optimal controllers presented in the time domain. The results reveal that MVMO-SH achieves the minimum error criteria within a shorter time. The optimal controller design gives an error of less than in the region for which it is tuned. The performance of the optimal PI controller is designed for one operating condition in different cases of wind gust, random variation of wind, and disturbance from the grid side to mitigate line to ground fault. The performance of the controller is shown to be satisfactory in all the cases studied.