小型風電系統(tǒng)最大功率跟蹤的研究

小型風電系統(tǒng)最大功率跟蹤的研究:通過對由新型無刷直流發(fā)電機構(gòu)成的小型風力發(fā)電系統(tǒng)的分析,提出了一種最大限度獲取風能的控制方法,該方法通過控制新型無刷直流發(fā)電機的電磁轉(zhuǎn)矩- 轉(zhuǎn)速特性間接地控制了風力機的機械轉(zhuǎn)矩- 轉(zhuǎn)速特性,使風力機在額定風速以下以最佳尖速比運行,自動跟蹤其最大功率點. 詳細闡述了運用此控制策略的功率調(diào)節(jié)器的設計方法,并實際制作了100 W的功率調(diào)節(jié)裝置. 系統(tǒng)實驗結(jié)果表明,新型控制方法在最大功率跟蹤上取得了很好的效果,對提高小型風電系統(tǒng)年發(fā)電量有參考和應用價值.
關鍵詞: 風力機;最大功率跟蹤;最佳葉尖速比;直流變換器

Abstract : A control method to maximizing the system output , for a small wind energy conversion system composed of a new type of brushless DC generator , is put forward. With the aid of the method , the wind turbine torque vs. rotate speed characters can be indirectly controlled via adjusting the machine electromagnetic torque vs. rotate speed characters ,and the wind turbine operation with the optimum tip2speed ratio (TSR) and the maximum power point (MPP) is automatically tracked.A method for designing the power conditioner using this control strategy is presented in detail . A 100 W power conditioner prototype is designed and constructed. The experimental results confirm the effectiveness of this method during maximum power tracking.
Keywords : wind turbine ; maximum power tracking ; optimum tip2speed ratio ; DC2DC converter