36kV电子束轰击炉高压直流开关电源设计

发布时间：2018-05-29 11:04

本文选题：高压直流开关电源 + 电子束轰击炉　；参考：《西安交通大学学报》2017年08期

【摘要】：针对高压直流开关电源变压器绝缘易被击穿和输入并联输出串联电源拓扑输出电压纹波大、精度低的问题,提出了改变变压器绕组布局结构的分段式绕制方法和一种数字化错相控制策略。首先,详细给出了分段式变压器的绕制结构和设计方法;其次,基于所建立的占空比与输出电压的数学模型,给出了错相控制策略中最小纹波因数下的占空比设计原则,并对纹波因数进行了定量分析;最后,绕制了分段式高频高压变压器样品,研制了36kV/10A电子束轰击炉电源的样机。实验结果表明:变压器分段式绕制方法降低了副边绕组的层间电场强度,进而可降低变压器绝缘等级,防止变压器绝缘击穿;所提出的错相控制策略可把输出电压纹波由23.2%降低到3.5%。总体来说,所提出的方法和策略提高了36kV电子束轰击炉高压直流开关电源的功率密度和稳定性。
[Abstract]:In order to solve the problem of high voltage ripple and low precision in the topology of transformer insulation of high voltage direct current switching power transformer, the topology of transformer winding layout structure and a kind of digital error control strategy are proposed. First, the winding structure of the sectional transformer is given in detail. Secondly, based on the mathematical model of the duty cycle and the output voltage, the design principle of the duty ratio under the minimum ripple factor is given, and the quantitative analysis of the ripple factor is carried out. Finally, a prototype of the 36kV/10A electron beam bombardment power supply is developed by winding a segmented high frequency and high voltage transformer sample. The experimental results show that the sectional winding of the transformer reduces the interlayer electric field intensity of the auxiliary side winding, then reduces the insulation level of the transformer and prevents the insulation breakdown of the transformer. The proposed fault phase control strategy can reduce the output voltage ripple from 23.2% to 3.5%., and the proposed method and strategy can improve the 36kV electron beam bombardment. Power density and stability of high voltage DC switching power supply for blast furnace.
【作者单位】：西安交通大学电气工程学院;西安理工大学电气工程系;
【基金】：陕西省重点学科建设专项基金资助项目(105-5X1201) 陕西省教育厅专项科研计划资助项目(16JK1559) 2015西安市碑林区科技计划资助项目(GX1508)
【分类号】：TN86

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