大型風力發電機組之葉片變螺距控制之研究

Research on Variable Pitch Control System for Wind Turbine Blades

林哲民(Che-Ming Lin)

指導教授 ： 江茂雄

國立臺灣大學/工學院/工程科學及海洋工程學研究所/碩士(2009年)

https://doi.org/10.6342/NTU.2009.02942

摘要

本文旨在建立大型風力發電機變螺距控制實驗系統，設計創新之葉片可變螺距機構，結合創新變轉速泵控系統驅動液壓螺距控制系統，建立實驗系統，並結合現代控制理論-具自調式模糊滑動補償之適應性模糊控制器，在無擾動和有擾動的情況下進行風力發電機葉片螺距角閉迴路控制，使風力發電機在高於額定風速時，發電量可以維持額定功率的輸出。由於變轉速泵控液壓系統具有高響應、高效率及高強健性、體積小、不易發熱等優點，相當適合應用於大型風力發電機，特別是離岸型風力發電機液壓伺服控制系統，故本研究發展變轉速泵控系統驅動液壓變螺距控制系統應用於大型風力發電機。本研究同時結合變轉速泵控液壓系統驅動變螺距控制之實驗系統與風力發電機子系統如葉片空氣動力、行星齒輪增速系統、永磁式發電機系統以及轉向系統等之動態模擬程式，以硬體迴路方式進行變動風速下實際之液壓變螺距角度控制以及風力發電機全系統之動態特性分析。

關鍵字

風力發電機 ； 變轉速泵控液壓伺服 ； 變螺距控制 ； 模糊滑動控制 ； 硬體迴路

並列摘要

This paper aims to develop a novel variable pitch control system of a large wind turbine which contains a novel mechanism design of the variable pitch control system, a variable rotational speed pump-controlled hydraulic driving system and a PC-based control system with a pitch controller designed by the adaptive fuzzy controller with self-tuning fuzzy sliding-mode compensation (AFC-STFSMC). The blade pitch control of the wind turbine is implemented under different disturbance conditions for maintaining the constant rated power output of the generator as the wind speed is larger than the rated wind speed. The variable rotational speed pump-controlled hydraulic driving system has the advantages of high response, high energy efficiency, small dimension and high robustness such that it is very suitable for driving the blade pitch control of an off-shore wind turbine. Besides, hardware-in-the-loop which combines the dynamic simulation of the main subsystems, including the aero-dynamics of blades, gear box and permanent magnet synchronous generator, and the experiment system of the novel variable pitch control system, is implemented for realize the practical pitch control and analyze the dynamic characteristics of the overall wind turbine system under variable wind speed.

並列關鍵字

wind turbine ； variable rotational speed hydraulic pump-controlled servo systems ； pitch control ； adaptive fuzzy controller with self-tuning fuzzy sliding-mode compensation ； hardware-in-the-loop

參考文獻

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