Abstract
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.
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