本論文針對三相感應發電機工作在獨立供電模式與市電併聯模式兩種運轉條件來做分析，並以瞬時虛功理論完成模擬控制。本論文以實驗室直流電動機驅動之1.1 kW三相感應電機參數來完成整體穩態及動態的模擬研究。
　　在獨立供電模式下，當感應發電機在變動轉速及負載時，除了由自激電容組提供不可控的虛功量外，其餘可藉由換流器補償所不足的或多餘的虛功電流以調節感應發電機的輸出電壓。在市電併聯模式下，當感應發電機在轉速變動之下針對市電端功因的改善提出兩種控制方法，分別達到提供特定的虛功量以及市電端單位功因的功能。

　　This thesis analyzes the characteristics of a three-phase induction generator with a reactive-power compensated inverter under both autonomous mode and grid-connected mode of operation using instantaneous reactive power theory. The parameters of studied system are obtained from a laboratory 1.1 kW induction machine driven by a DC motor to perform both dynamic and steady-state simulations.
　　In autonomous mode of operation, the capacitor bank is used as a bulk uncontrolled source of reactive current and the proposed inverter provides reactive current to regulate the stator-winding voltage of the studied induction generator under variable rotor speeds. In grid-connected mode of operation, two control strategies to achieve unity power factor at grid side are proposed for the studied induction generator under variable rotor speeds.

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