風力發電系統之T-S模糊功率控制

T-S Fuzzy Power Control for Wind Energy Conversion Systems

李宗翰(Zong-Han Li)

指導教授 ： 邱謙松

中原大學/工學院/電機工程研究所/碩士(2011年)

https://doi.org/10.6840/cycu201100694

摘要

本論文針對永磁同步發電機(PMSG)為主體之風力發電系統(WECS)，發展風力發電最大功率控制器。為使風力發電機輸出最大功率，採用降壓轉換器作為調節電路，並根據風力發電機之特性，設計T-S模糊控制器進行功率追蹤。首先，將風力發電系統以模糊線性子系統的方式來表示，藉由平行分佈補償(PDC)的方式設計控制器或狀態估測器，並透過Lyapunov method找出閉迴路系統的穩定條件，將此穩定性分析轉換成線性矩陣不等式(LMI)可行性問題，最後透過Matlab求解控制與估測增益。
為驗證所提控制器的可行性，本論文先以模擬方式驗證最大功率追蹤性能，並進一步比較PI控制器的差異性，最後以dSPACE DS1103數位訊號處理器進行實驗。經由實驗結果可發現，T-S模糊控制器可保證快速收斂至追蹤目標，且對系統較具有強健性。

關鍵字

T-S Fuzzy ； 永磁同步發電機 ； 風力發電 ； 最大功率控制 ； 降壓轉換器

並列摘要

This thesis focuses on the maximum power tracking for permanent magnetic synchronous generating (PMSG) based wind power energy conversion system (WECS). To achieve the control objective, a DC/DC buck converter is used as the power regulation circuit. Then, the T-S fuzzy tracking controller is designed to drive the operating system to the maximum power point. In the controller design process, the nonlinear model is initially represented into a T-S fuzzy form such that both controller and observer can be obtained via Lyapunov stability analysis and Matlab LMI toolbox.
Both simulations and experiments are established to verify the controller’s performances. Moreover, a PI controller is used in comparisons with the proposed controller. In the experiment environments, a real time DSP card dSPACE DS1103 digital processor is used to realize the proposed controller. Finally, the results show good performances in robustness and maximum power tracking for the proposed approach.

並列關鍵字

DC/DC buck ； MPPT ； WECS ； T-S Fuzzy ； PMSG

參考文獻

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