| Summary: | 碩士 === 明新科技大學 === 電機工程研究所 === 101 === In this thesis, the current situation in the domestic Electric Multiple Units (EMU) of the railway track of high power devices usage is discussed. Because of the existing EMU’s inverter using high-power device characteristics compared with a low efficiency and high loss of GTO (Gate Turn-off Thyristor), it has been difficult to obtain materials and the price is quite expensive in recent years. There are few companies that are willing to continue production and sell, so GTO has gradually reduced to use it. Using high power devices of the GTO domestic EMU is face to have no materials for repair or preparation which seriously affects the operation of the train.
This thesis will discuss GTO inverter on EMU and redesign it. Improvement of low efficiency and high losses of GTO and solving the existing materials shortage problem will also be discussed.
The use of the inverter module (IGBT: Insulated gate bipolar transistor) is relatively new and available materials in the market. The designed IGBT inverter module will solve the material lacking problem of high-power devices and also provide new spare products to facilitate the maintenance of vehicles and enhance the quality of the EMU. Thus new EMU system will extend the operating time, reduce vehicle operating cost, and improve the railway track industrial technology. This thesis will focus on high-power devices on EMU to improve its usage and research. Finally, the designed IGBT inverter module is realized in EMU 35 kVA system.
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