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Thin film capacitors with alumina dielectrics were formed on glass substrates. The dielectrics was prepared by reactive magnetron sputtering under following conditions: the power of the RF generator was 70 W and 150 W, the pressure of argon was 1.5 and 2.5 Pa and the flow of oxygen was 10 and 20 ml/min. The time of sputtering was 20 min. Mathematical models of the sputtering process for the capacitance...
This paper presents the development of the SNCF's HIL plateform whose purpose is testing, evaluation and validation of Energy Management Systems (EMS) for hybrid railway systems. In this way, The real EMS of the SNCF's hybrid locomotive PLATHEE has been coupled with modeling of the hybrid traction chain through a real Controller Area Network protocol (CAB) and signal HIL simulation has been performed‥...
In order obtain the chemical energy of the explosive charges sufficiently and increase the transfer efficiency of the electromagnetic energy, this paper proposes that the max capacitor discharge current moment should be chosen as the detonation time of the radio frequency explosive magnetic flux compression generator. By comparing two radio frequency explosive magnetic flux compression generator detonations...
A DC-powered, compact source capable of delivering in excess of 300 kV into a matched load is realized driving a 16-stage Marx generator with a 10 kJ/s rapid capacitor charger. The system is capable of delivering 100 J per pulse at a maximum pulse repetition frequency of 100 Hz. The Marx generator and capacitor charger are housed in a cylindrical package with approximate dimensions of 12?? ?? 60??...
This paper describes a square-wave generator based on positive second generation current conveyors (CCII+-s). The circuit uses three positive second generation current conveyors, six resistors and one capacitor. The square-wave generator frequency can be adjusted independently with either resistor R or capacitor C. The circuit was built with commercially available current feedback operational amplifiers...
The nature of the industrial plasma load requires power electronics topologies with high switching frequencies and tailored output impedance. Depending on the method of coupling to the plasma, the power circuit topology should be selected to provide these characteristics as an inherent property of the circuit. Two design examples of practical interest are given, one for a magnetically coupled toroidal...
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