Open AccessImproving power smoothing and performance of pitch angle system for above rated speed range in wind power systems
Author(s) -
Gholami Mehrdad,
Fathi Seyed Hamid,
Milimonfared Jafar,
Chen Zhe
Publication year - 2019
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2018.5216
Subject(s) - wind speed , smoothing , wind power , control theory (sociology) , power (physics) , turbine , range (aeronautics) , permanent magnet synchronous generator , computer science , pitch angle , simulation , engineering , electrical engineering , physics , meteorology , control (management) , aerospace engineering , quantum mechanics , artificial intelligence , geophysics , computer vision
This study presents a new simple control strategy for direct driven permanent magnet synchronous generator wind turbines, using no wind speed sensor. It is shown that the fluctuation in output power, not only exists at below the rated wind speed, but also appears in above the rated speed region. Therefore, it employs power‐smoothing strategies within a wide range of wind speeds and provides soft performance of the pitch angle system for above the rated speed range. In previous studies, power smoothing is mainly limited to the wind speeds below the rated value, whereas, in this study, all operating speed ranges of the turbine, including wind speeds above the rated value, are considered. Fluctuation in the output power for above the rated speed is analysed and it is shown that there is a significant level of fluctuation in the output power. Therefore, a new strategy is proposed to have more power smoothing as well as having soft performance of pitch angle system for above the rated speed region. The performance of the proposed strategy is evaluated by MATLAB/ Simulink simulation and its validity and effectiveness are verified.