Electron gun filament power supply, electron accelerator and control method thereof

Abstract

The invention discloses an electron gun filament power supply, an electron accelerator and a control method thereof, belonging to the field of radiation processing. Including: three-phase bridge type uncontrolled rectification circuit, which is used to rectify the three-phase input AC voltage to obtain DC voltage; inverter circuit, including LLC inverter, which is used to output the DC voltage output by the three-phase bridge type uncontrolled rectification circuit Converted into AC voltage with a frequency above 150kHz, the high-frequency transformer is used to reduce the AC voltage amplitude output by the LLC inverter, and the reduced AC voltage is used for power supply of the electron gun filament; the sampling circuit is used to sample the three-phase bridge Control the input voltage and output voltage of the rectifier circuit and the output power of the inverter circuit; the control circuit is used to dynamically adjust the operating frequency of the inverter to change its output power according to the sampled output power value of the inverter circuit, which solves the problem of the electron gun filament The problem of low power control precision and slow response speed, combined with the proposed electron accelerator and its control method, realizes the stable output of the accelerator beam.

Description

technical field [0001] The invention belongs to the field of electron accelerators in irradiation processing equipment, and more specifically relates to an electron gun filament power supply, an electron accelerator and a control method thereof. Background technique [0002] Electron irradiation accelerators are widely used in the field of irradiation industry, such as the production of irradiation cross-linked wires and cables, heat shrinkable tubes, rubber vulcanization treatment, treatment of factory "three wastes" pollutants, etc., and have good economic benefits. At present, the scale of the domestic irradiation industry is expanding day by day, and the demand for the quantity and quality of electron accelerators is increasing year by year. Insulated core transformer, as a stable and reliable accelerator model with an energy utilization rate of over 80%, is especially welcomed by irradiation processing applications in low-energy areas. [0003] The irradiation effect o...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of low control precision, slow response speed, and low stability of accelerator beam current output in the prior art, the present invention provides an electron gun filament power supply, an electron accelerator and a control method thereof, the purpose of which is to realize the electronic gun filament power supply The precise control of the output power improves the response speed of the electron gun filament power supply, reduces the load adjustment rate of the electron gun filament power supply, reduces the volume of the electron gun filament power supply and improves the integration level, reduces the difficulty of troubleshooting and processing of the electron gun filament power supply; improves the compactness of the electron accelerator device stability; to achieve a stable output of the electron accelerator beam

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