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In high-voltage systems such as in pulse power, commonly used semiconductor devices cannot be applied to the generation part of high-voltage pulse. However, unlike semiconductor, the magnetic switch cannot control its own ON and OFF operation. Moreover, with the magnetic switch the system efficiency goes down with load variation, and arcs caused by saturation of the energy in reactor have a negative effect on the whole system. This letter presents the way to effectively control the magnetic switch applied to high-voltage pulse power supplies such as plasma generators. The efficiency of the system is optimized by automatically controlling the magnetic switch based on the load variation. Then, the energy the load requires is supplied to the system, which leads to the stability of the system. The proposed method is confirmed by experiments on a designed system. [ABSTRACT FROM AUTHOR]

In pulsed power system, mechanical characteristic means the structure of the plasma reactor, and impedance matching between the pulse generator and the plasma reactor means the electrical characteristics. It is a very important issue in the industry because impedance matching is closely related to the efficiency and reliability of the pulsed power system. In this paper, the design and implementation for improving the energy density of the wire-plate plasma reactor are presented. The system configuration, impedance characteristics and structures of the plasma reactor are described, and the output characteristic of the plasma reactor according to the structure of the wires and plates is analyzed. The plasma reactor model is realized on the simulation tool, and the simulation results are compared with the experiment data. Based on the theoretical analysis and the simulated model, impedance matching between the wire-plate plasma reactor and the pulsed power generator can be more fully achieved. [ABSTRACT FROM AUTHOR]

Capacitor charging power supply (CCPS) is a developed technology that utilizes resonant converters topology for high power applications. This paper proposes new a capacitor charging power supply using leg-rotation control method within a phase-shifted PWM full-bridge dc/dc converter. The capacitor charging power supply was connected in series to increase output voltage. Also, the proposed system is designed with soft switching techniques in order to achieve high efficiency, and a leg-rotation control method was used to reduce the heat generated from the IGBTs. The operation of the converter and design methodology will be described. A simplified model of a high-voltage high-frequency transformer is given and the structure is designed to decrease high-voltage stress. The validity of the proposed system is then verified by experimental results. The performance test of the capacitor charging power supply was carried out with a 2 μF capacitive load with a 20 kV output voltage. [ABSTRACT FROM AUTHOR]