由於風力發電機輸出功率的非線性與不確定性，其最大功率運轉點會隨平均風速之不同而有所變化。為尋找風力發電系統在任何風速下皆能操作在最大功率點上，本論文模擬擾動觀察法、比較斜率法、三點權位法與功率差量乘積法於獨立型100 W風力發電系統之最大功率追蹤的比較，進而分析其追蹤時間與輸出平均功率之差異。由四種最大功率追蹤法之模擬結果得知，其皆可適用於風力發電之最大功率點的追蹤，但因以追蹤時間與輸出平均功率為指標，吾人選擇比較斜率法與三點權位法，以進一步模擬12 kW風力發電系統的最大功率追蹤，並驗證模擬程式的準確性。在負載與風速不同之切換下，比較其相關電壓、電流、輸出功率以及追蹤效率之差異，所得結果期能作為未來設計風力發電系統之參考。

Due to nonlinear and uncertain characteristics of wind turbine model in nature, the maximum power operating point will vary with the average wind speed. In order to search the maximum power operating point for the given wind speed, this research simulates four techniques including perturb and observe algorithm, slope-comparing method, three-point weighting comparison scheme, power-difference-product method for tracking the maximum power point on a stand-alone wind power system with a rated power 100 W by comparing the tracking time and the average wind power generation. According to the simulated results, the mentioned four approaches can all be used to track the peak output power of the wind energy system. However, slope-comparing method and three-point weighting comparison scheme associated with indices of tracking time and average wind power generation are chosen to further simulate the maximum power point tracking on a stand-alone wind power system with a rated power 12 kW for comfirming the accuracy of the simulation. The voltages, currents, output powers and tracing efficiencies using both approaches to track the peak output power in different wind speed are studied for a change in the load. Hopefully, the results can be used as a reference for engineers to design a wind power generation system in the future.

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