本論文探討一部三相繞線型轉子感應電機在定子端連接三相自激電容做自激發電下，其兩種不同運轉模式之交互切換特性，一種運轉模式為感應發電機，其轉子Y連接繞組端點直接短路；另一種運轉模式為串接同步發電機，其轉子Y連接繞組直接以異相序方式與定子繞組做串聯連接。文中以三相a-b-c軸模型推導微分方程式，以分析一機-兩運轉模式發電機下之三相平衡與不平衡電氣特性。本論文亦將這兩種發電機的運轉模式改變為電動機模式來運轉，完成起動及加載之特性比較分析。本論文之模擬結果並與實驗室一部容量為1.1 kW之繞線型轉子感應電機之實測結果相互比較，完成穩態及暫態的交互分析，以驗證所提出模型及分析結果的正確性。由模擬及實驗結果得知，本論文所提出的模型可適用於感應電機在發電機及馬達運轉下的雙切換模式工作條件。

This thesis investigates the performance of a wound-rotor induction machine under two different operating modes by means of switching conditions. One operating mode is a self-excited induction generator with short-circuited Y-connected rotor terminals while the other is a series connected self-excited synchronous generator with Y-connected rotor windings in series with the stator windings in different phase sequence. The three-phase a-b-c induction-machine model is employed to analyze the performance of the studied machine under two different operating modes. The studied induction machine is also operated as a motor under these two different modes to analyze the startup and loading performance.
To validate the proposed mathematical model under different operating modes and loading conditions, the simulated steady-state and transient results are compared with the experimental results obtained from a laboratory 1.1kW wound-rotor induction machine. It can be concluded from the simulated and experimental results that the proposed model is adequate to simulate the performance of the induction machine operated as generator and motor modes under switching conditions.

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