Abstract
The scientific objective was to investigate the cooperation of three-electrode plasma reactors with gliding arc discharge powered from multi-phase AC/DC/AC converters. In order to achieve the scientific and practical goal of the project, a test stand was designed and built, which included: a multi-electrode GlidArc type plasma reactor; a power-electronic AC/DC/AC converter, working as a source of voltage or current with regulated parameters of energy transferred to the discharge space; reactor operation diagnostics systems; and a process gas feeding and flow control system. The GlidArc Plasma Reactor has shown high sensitivity to changes in many electrical as well as gas chemical, gas-dynamic and mechanical parameters. The AC/DC/AC converter turned out to be a system sensitive to interference generated by the plasma reactor. It can be noticed that the operation of the reactor in certain conditions causes bigger interferences of the converter. However, it is difficult to systematise the influence of particular parameters of the reactor’s operation on the operation of the AC/DC/AC converter and vice versa due to mutual correlations of many parameters. The correct operation of a plasma reactor depends on the characteristics of the power supply system; on the other hand, the power supply system reacts to such an untypical receiver as a plasma reactor.
Highlights
The power supply system is an integral part of the plasma generation system, determining the possibility of using the plasma process on an industrial scale and requiring special design and construction methods
Observing the discharge parameters and analysing the level of current and voltage deformation and the level of conducted and radiated electromagnetic interferences emitted by the plasma reactor, it is concluded that appropriately selected transformer power supply systems provide better conditions for plasma generation, but without the possibility of smooth regulation of its parameters, which is a big disadvantage
The interaction of an AC/DC/AC converter with an arc plasma reactor is a multithreaded and complex issue, difficult to analyse due to mutual correlations of a few parameters in many devices
Summary
The power supply system is an integral part of the plasma generation system, determining the possibility of using the plasma process on an industrial scale and requiring special design and construction methods. A plasma reactor power supply system is usually designed and constructed together with a plasma reactor and the required plasma process geometry, at a specific composition of process gas, its flow velocity and pressure. A good power supply system power system should be able toofcontrol the parameters of the generated depending should supply be able to control the parameters the generated plasma depending on the plasma type of process gas, on the type of process gas, its flow velocity, pressure, chemicalofpurity and requirements of its flow velocity, pressure, humidity, chemical purity humidity, and requirements the plasma process. AC/DC/AC conditions can be provided by specialised power electronic AC/DC/AC converters designed to work with converters designed an arc plasma reactor.to work with an arc plasma reactor
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