Automation of the Use of False Components in the Information System
Year: 2024
Type: article
Abstract: The design of a small-sized high-efficiency welding inverter with high-frequency alternating currentoutput for semi-automatic welding is considered. The inverter is distinguished by good power density andlowered power losses due to absence of output power rectifier. It is shown that when high-frequency alternatingcurrent is supplied to the welding arc, several problems arise: the non-constant inductance of thewelding circuit presents a significant reactance at conversion frequencies of tens of kHz, limiting the arccurrent; at high frequency, a surface effect (skin effect) begins to manifest itself. To solve the problem ofcurrent limitation, a scheme with reactance compensation is proposed by connecting a capacitor in serieswith the welding circuit and introducing frequency control of the current in the resulting series-resonantcircuit. The aim of the work is to develop a welding inverter for semi-automatic welding with highfrequencyalternating current, ensuring high-quality process flow. As a result of the research, a smallsizedwelding inverter for semi-automatic arc welding with high-frequency alternating current was developedand prototyped. Laboratory tests of the designed inverter have shown steady arc burning and stableprocess flow. The developed inverter can be easily modified to increase the welding current. The structureof the power section of the developed welding power supply also allows it to be used for induction heatingtasks by connecting an inductor with an inductance of 2...7 μH to the output terminals and introducingminor adjustments into the microcontroller control program to implement inductor current control.Thanks to the increased power factor, the developed inverter current drawn from the supply grid is25...40% lower than that of the widespread welding inverters without a power factor corrector. This reducesthe load on the distribution supply grid and allows welding operations to be carried out when poweredfrom a "weak" grid or with a long power cable
Authors: S.A. Smirnov, N.Y. Parotkin, V.V. Zolotarev
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4406765037