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The GTOs are important device in Korean 8200 series electric locomotive because GTOs which are switches of converter and inverter in main conversion power system frequently fail. Also the price of GTOs are very high. So maintenance cost of GTOs has increasing. In this paper, LCC analysis was conducted for GTOs of the main conversion system in 8200 series electric locomotive. In order to LCC analysis,...
The maintenance cost of 8200 series electric locomotive operating in Korea is rising due to aging and lack of original technology. 8200 series electric locomotive have two auxiliary power systems. The auxiliary power system supplies power to the passenger cars. So it is related to the safety and reliability. There are many parts of the auxiliary power system. Among that, The PWM modules are very important...
Rigid bar and pantographs are used to power electric railway vehicles. When operating an electric railway vehicle, Rigid bar and pantographs are unstable in contact and occurs Arc. It is the cause of breakdown and accident. In this paper, a contact loss simulator for a rigid bar system was designed and the characteristic of arc is analyzed. Especially, occurrence of arc due to the excitation frequency...
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