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National Repository of Grey Literature

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	EMI Generated by Trolley-Bus with IGCT-Based Drive Budek, P. ; Doležel, Ivo ; Jehlička, Vladimír ; Škramlík, Jiří ; Valouch, Viktor The paper describes the employment of a new IGCT element in a dc chopper designed for feeding a dc trolley-bus traction motor. The discussed radiated EMI noise generated during the chopper operation was measured and calculated on a simplified model. The preliminary slow moving tests within the range 150 kHz - 30 MHz were performed. The results of the measurements of magnetic field exhibit the compliance with the European Standards EN 50121-2, EN 50121-3-1. Detailed record
	IGCT-Based Traction Drives for City Mass Transport Bartoš, Stanislav ; Jehlička, Vladimír ; Valouch, Viktor ; Večerka, Tomáš ; Bureš, J. ; Kalčík, K. ; Venhoda, E. The paper introduces a sunrise power semiconductor switching device called IGCT. Converters based on IGCTs might contribute in near future to the quality of electric drives. Detailed record
	Transfer of the Noise and Vibration from the Motor to the Passenger Space Budek, P. ; Chmelíček, M. ; Hejman, M. ; Jehlička, Vladimír Development of the new trolley-bus or change of its structure requires the noise and vibration measurements. the goals of the manufacturer is to reduce the noise level in space of passengers in the trolley-bus. The paper describes the process of identification of the noise sources, investigation of the vibration transfer and simulation of the structural behaviour by FEM program COSMOS/M. The computation-based structural changes are suggested. Detailed record
	Modern Switching Devices Will Improve Electric Vehicles in City Mass Transportation Bartoš, Stanislav First, the lecture outlines the prospective trends in city mass transportation. In further sections, principles of electric traction drives are discussed. As the lecture is intended for broad technical audience not specialized in power electronics, only the most elementary principles of converters are explained. Their improvement is based on the employment of IGBTs and IGCTs, which are the state-of-the-art semiconductor power switching devices. Detailed record

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