本文旨在研製一個軌道牽引變流器相位模組測試系統，此測試系統之目的在於不須將相位模組裝至實際系統的前提下，提供一測試平台以測試相位模組之耐壓、耐流等性能。系統是由單相升壓式功率因數修正器與雙向直流/直流轉換器所構成，前級的單相升壓式功率因數修正器提供了可調式的直流鏈電壓，並改善電源側功率因數。後級的雙向直流/直流轉換器是由升壓式與降壓式轉換器所串聯而成，此二轉換器係直接由待測相位模組上之開關元件配合測試系統上之濾波元件組成，目的為產生一組測試用交流電流源給予待測相位模組做測試。此測試系統最大的優點為提供相似的操作環境，且只有少量的功率消耗。本文首先利用MATALB/Simulink軟體建立模擬系統，包含了功率級電路及控制方塊圖，實作上透過數位訊號處理器 (TMS320F2812)作為硬體數位化控制器，處理回授信號並提供適當的脈波寬度調變信號觸發開關元件及待測相位模組。模擬與實作結果相互驗證，證明本文所提出的測試系統之可行性。

The purpose of this thesis is to implement a testing system for the phase modules which are used in railway traction inverters. The testing system provides a testing platform which tests maximum voltage and current rating without installing the phase modules on real system. The proposed testing system is composed of a single-phase boost power factor corrector and a bidirectional dc-dc converter. The single-phase power factor corrector at the front stage supplies a regulated dc link voltage and improves the power factor of the ac source. The bidirectional dc-dc converter is composed of cascading buck and boost converters. These two converters are composed of switch elements of the under-tested phase modules and filter components of the testing system. The purpose of the second stage is to provide a controllable ac testing current for the under-tested phase modules. The major advantage of the proposed testing system is that the testing system provides a similar operating condition for the under-tested modules with only few power consumption. This thesis uses MATALB/Simulink to build a simulation system which includes the power stage and the control blocks. A digital signal processor (TMS320F2812) is employed as a digital controller, which processes the feedback signals and provides the pulse width modulation signals for the switches and the under-tested phase modules. Both simulation and experimental results are shown in this thesis to verify the validity of the proposed testing system.

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