MASTER CONTROLLER OF A HIGH-VOLTAGE POWER UNIT SOURCE OF AN ELECTRON BEAM WELDING DEVICE
D. V. Senkov1,2, A. S. Medvedko1
a:2:{s:4:"TYPE";s:4:"HTML";s:4:"TEXT";s:238:"1Budker Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 11 Novosibirsk, 630090 Russia
2Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090 Russia";}
Keywords: электронно-лучевая сварка, источник высокого напряжения, переходной процесс, стабилизация напряжения, адаптивная обратная связь, electron beam welding, high-voltage source, transient process, voltage stabilization, adaptive feedback
Subsection: AUTOMATION SYSTEMS IN SCIENTIFIC RESEARCH AND INDUSTRY
Abstract
This paper describes the structure and control algorithms of a controller of a high-voltage source with an output voltage of 60 kV and a power of up to 30 kW. The source is designed to be used as part of a power unit of an electron-beam welding device developed at the Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences (BINP SB RAS). High-quality welds require a stable electron beam energy. Herewith, a standard operation mode is quick and deep modulation of the electron current. The problem of achieving high-quality control and limiting the transient distortions of output voltage of the source is solved. The error of establishing and stabilizing the output voltage is 0.1%, which allows obtaining high-quality welding. Transient distortions at 100% modulation of the load current do not exceed the value of ±1%, which, along with fast reaction of the source to a load breakdown (energy released during breakdown is smaller than 15 J), protects the welded parts and elements of the gun from being damaged by an electron beam.
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