雙饋式感應發電機之直流電容電壓的控制與模擬

Abstract

本論文針對電網電壓驟降對雙饋式感應發電機（DFIG）中的直流電容電壓的影響作分析。在傳統控制策略、補償式控制策略、以及內模式控制策略(Internal Model Control)下，探討並比較直流電容電壓在各種策略下的優劣。在了解各控策略的特性後，本論文結合各控制策略的優點，改善直流電容電壓暫態與穩態響應，最後透過Matlab / Simulink模擬軟體建立所需之感應發電機模型，在三相電壓驟降對各控制策略進行測試與模擬，以觀察在故障時系統的響應，並且在最後分析其結果。

In this thesis, we analyze the impact of grid voltage sags on the DC-link of Doubly-Fed Induction Generator (DFIG). We discuss and compare the advantages and the disadvantages of the various strategies which include the traditional control strategy, the compensation control strategy, and the internal model control strategy. The understanding of the characteristics of the control strategy is to combine the advantages of various control strategies to improve transient and steady state response of the DC capacitor voltage. The strategies are treated via Matlab / Simulink simulations with an DFIG in three-phase voltage sags. The results are analyzed.