Study of High-Voltage Power Supply for Electronic Beam Welder Based on Soft-switching Technology

[摘要] Due to the lower frequency of traditional high-voltage power supply for Electronic Beam Welder(EBW) and larger volume and weight of transformer, the working frequency of the inverter circuit is improved to reduce the volume and weight of transformer. The soft switch of power tube is implemented using the LC resonant converter. Soft switch technology is also utilized to avoid the harmonic and to reduce the switching loss when the power tube opens and shuts off under high speed. The working principle of LC resonant converter is also analyzed. The fault that the voltage is hard to change by FM in lighter load is avoided using BUCK circuit to adjust busbar voltages. The rationality of design is demonstrated by debugging the high-voltage power supply for EBW, and analyzing the test parameters.

[发布机构] School of Mechatronic Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu; 730070, China^1;Graduate Department, China Academy of Railway Sciences, Beijing; 100081, China^2

[效力级别] 无线电电子学

[关键词] Busbar voltages;Electronic beams;High voltage power supply;Inverter circuit;Lower frequencies;Resonant converters;Switch technologies;Working frequency