Program-control pulse generator used for repetition frequency high-voltage pulse power supply

Abstract

A program-control pulse generator used for a repetition frequency high-voltage pulse power supply comprises an ARM (advanced RISC machine) microprocessor (3), a main power supply (5), an auxiliary power supply (4) and a power amplifying circuit (6). Functions of inputting 220V-voltage alternating current and outputting 1V to 15V voltage after rectifying, filtering and pulse transforming and transforming adjustment are realized by a main structure of the main supply (5). Functions of power factor correction and voltage stabilizing control of the main power supply are realized by a main power supply voltage control circuit of the main power supply (5). A 5V voltage output end and a 1V to 15V voltage output end of the main power supply (5) are connected to a power supply pin and a data receiving pin of the ARM microprocessor (3) through leads and are connected to an input end of the power amplifying circuit (6) from an I / O (input / output) output pin of the ARM microprocessor. The auxiliary power supply (4) stabilizes the 5V voltage and the 15V voltage and provides power for driving the ARM microprocessor (3) and an IGBT (insulated gate bipolar translator), and the power amplifying circuit (6) provides trigger signals for a driver of a switch device.

Description

technical field [0001] The invention relates to a pulse generator. Background technique [0002] High-voltage pulse power supply is a power supply device through low-speed storage and high-speed release of energy, and outputs high-voltage pulses with a certain width, amplitude and frequency through the opening and closing of various forms of switches. At present, high-voltage pulse power supplies are mainly used in basic research fields such as gas discharge, dielectric insulation aging, and pulse jet mechanism, as well as industrial application fields such as material surface modification, wastewater / gas treatment, and sterilization. In experimental research, parameters such as pulse width, frequency, and amplitude need to be changed to analyze the impact of various power supply parameters on different discharge forms. In industrial applications, parameters such as pulse width, frequency, and amplitude need to be changed to deal with different processing objects. However, ...

AI Technical Summary

Problems solved by technology

[0003] Pulse generators have been developed for many years, among which the method of controlling circuits based on frequency dividers and crystal oscillators and using LC oscillator circuits to generate pulses was the first to be developed. The disadvantage is that it is not easy to generate narrower and better-shaped pulse signals. These The pulse generated by the generator will also have a tail or recoil, which directly affects the safe and reliable triggering of the power switching element; and the pulse generator that directly relies on a simple combination of discrete components to generate pulse signals, pulse frequency and pulse amplitude, etc. Difficult to adjust, such as the "programmable synchronous pulse generator" of the patent CN200510089523.9, which can run in a clock synchronizer, using phase detection and verification circuit system to ensure the pulse edge; relying on programmable embedded chips to generate high-demand pulses Signals have become the best choice - FPGA-based generators for programming devices

Representatives such as Masahiro Akiyama of Kumamoto University in Japan have successfully applied magnetic pulse compression power supplies to provide high-frequency trigger signals for IGBTs (Masahiro Akiyama, et al., High-performance pulsed-power generator controlled by FPGA, IEEE Transaction on plasma science, 2010,38(10):2588-2592); Generator based on CPLD programming device, represented by Lin Wenfu of Sun Yat-sen University, successfully realized nanosecond-level pulse signal generator by using programmable logic device (Lin Wenfu, PLD-based nanosecond Level pulse generator, Modern Electronic Technology, 2007 (13): 58-59+62); The generator based on DSP programming device is mostly used as a control system for motor operation, but it needs a drive circuit when connecting peripheral devices such as LCD screens , such as the "DSP-based liquid crystal display control circuit" of Chinese patent 200620028188.1, provides a stable and reliable liquid crystal display control circuit solution, but the additional drive circuit makes the whole machine larger

CN101383566A is based on the generator of ARM chip, utilizes the embedded controller that ARM micro-controller and embedded operating system forms to control ultrasonic motor, but this controller can only output two-phase four-way pulse signal

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