Master controller of a high-voltage power unit source of an electron beam welding device

Autor: A. S. Medvedko, D. V. Senkov
Rok vydání: 2015
Předmět:
Zdroj: Optoelectronics, Instrumentation and Data Processing. 51:632-637
ISSN: 1934-7944
8756-6990
DOI: 10.3103/s8756699015060163
Popis: 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.
Databáze: OpenAIRE
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