風力發電系統之調變型擾動觀察法

近年來風力發電系統日益受到重視，如何更有效率的運用風能已成為一個重要的議題。在本論文提出調變型擾動觀察法，可改善傳統擾動與觀察法的缺點。此方法僅需量測風力發電機之輸出電壓與電流。藉由感測這些風力發電機的狀態條件，調整擾動間距與擾動時間，不但可以降低在最大功率點的震盪，同時也可以提升系統的追蹤速度。最後，系統採用數位信號處理器dsPIC30F4011實現並驗證所提出的最大功率追蹤。

關鍵字

風力發電系統；擾動觀察法；最大功率追蹤；數位訊號處理器

並列摘要

In recent years, how to more effectively extract wind energy form wind power system has become a significantly research issue. The thesis proposes modulated perturb and observe algorithm, this algorithm can improve the disadvantages, such as power loss and longer tracking time. Only the output voltage and current of wind turbine are required in proposed modulated perturb and observe algorithm. By sensing those conditions to adjust the perturb step and perturb time, so that it not only can reduce the oscillation around the maximum power point, but also increase the system tracking speed. Finally, the system is controlled with a digital signal processor, dsPIC3F011, to realize and prove the proposed maximum power point tracking.