酸洗过程高频双极脉冲电源数字控制系统

Yang Kai, Yang Guang, Cao Biao, Huang Zenghao
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引用次数: 0

摘要

酸洗是一种用于去除水垢的工业方法。为了克服腐蚀酸对金属基体的腐蚀和氢脆现象等严重问题,设计了一种高频双极脉冲电源数字控制系统。分析了酸洗系统的负载特性,提出了相应的输出电流波形方案。介绍了基于两级逆变器结构的主电路拓扑结构及其工作原理。提出了一种基于数字信号处理器(DSP)的数字控制系统。详细阐述了逆变电路的控制方案和控制算法。一个峰值输出功率高达15千瓦的样机已经建成并进行了测试。该电源可输出阳极直流(DC)、高频双极脉冲和阴极直流波形。脉冲的重复频率高达10千赫,电流脉冲受回路电气参数的影响。实验结果表明,高频双极脉冲对钢的酸洗是非常有效的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Digital control system of high frequency bipolar pulse power supply for acid pickling process
Acid pickling is one of the industrial processes used for removal of scales. To overcome some severe problems when using aggressive acids, such as corrosion of metallic substrates and hydrogen embrittlement phenomenon, a digital control system of high frequency bipolar pulse power supply has been designed. The load characteristic of the acid pickling system is analyzed and the corresponding output current waveform scheme has been put forward. The main circuit topology, which is on the basis of two-stage inverter structure, and its working principle are described. A digital control system based on digital signal processor (DSP) is proposed. Control schemes of inverter circuits and control algorithm are also explained in detail. A prototype with a peak output power up to 15 kW has been constructed and tested. The power source can output anodic direct current (DC), high frequency bipolar pulse and cathodic DC waveforms. The pulses have a repetition rate up to 10 kHz, and the current pulse is influenced by loop electrical parameters. The experimental results demonstrate that the high frequency bipolar pulses are very effective for acid pickling of steel.
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