II. PRINCIPLE OF THE MULTIPLE-SWITCH CIRCUIT This paper discusses a novel multiple-switch pulsed power technology. By using transmission lines, multiple Figure 1 shows the schematic diagram of a multipleswitches can be synchronized like in a MARX generator. switch circuit with two spark-gap switches S1 and S2 and a To gain insight into this technology, an equivalent circuit two-stage transmission line transformer (TLT). The model was developed, a two-switch experimental setup identical capacitors C1 and C2 are charged in parallel and and a prototype pulsed power source with four gas spark-are connected to the transmission line via switches at the gap switches have been constructed. The four-switch input side. At the output side, the transmission lines are setup includes 16 coaxial cables, four in parallel in each connected in series, and the output impedance is 2ZO. ZO is stage. This setup has been operated at a repetition rate of the impedance of the transmission line. Magnetic cores 50 pps with over 1.4 kA switching current. The principle, are placed around the transmission line to increase the experimental setup and experiment results will be given in impedance Zs, which is defined as the wave impedance this paper.between the two adjacent stages of the TLT as seen from the input side.
In this paper, the matching between the a pulsed power modulator and a corona plasma reactor is discussed. The matching is expressed as the energy transfer efficiency between the modulator and the reactor. The criterion for optimal matching between a source and a load is that the output impedance of the source is equal to the load impedance. When trying to match a pulsed power modulator to a plasma reactor this criterion is difficult to obey since the load impedance changes rapidly before, during and after plasma generation. To simulate the response of the load as function of the voltage pulse, an equivalent circuit is used. Measurements will be presented to verify the derived model. Guidelines to optimize the matching between the modulator and reactor are derived.
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