基于高频逆变技术的X射线灯丝电源  

X-ray Filament Power Supply Based on High Frequency Invert Technology

作　　者：刘艳玲[1] 丁言镁[1] 邓玉福[1] 于桂英[2] 

机构地区：[1]沈阳师范大学物理科学与技术学院,辽宁沈阳110034 [2]沈阳师范大学实验中心,辽宁沈阳110034

出　　处：《沈阳师范大学学报（自然科学版）》2010年第1期34-37,共4页Journal of Shenyang Normal University:Natural Science Edition

基　　金：辽宁省自然科学基金资助项目(20092069);辽宁省高等学校科学研究计划项目(20060844);沈阳师范大学实验中心主任基金项目(SYZX01)

摘　　要：X射线机是一种重要的检测设备。随着它在医疗、工业检测、食品安全等方面的广泛应用,对它的制造技术和检测精度不断提出更高的要求,相应的配套电源也成了该领域研究的重点。传统的配套电源采用工频技术,体积笨重,效率低,能耗高,稳定性不好,缺乏保护措施,使得设备输出的X射线稳定性、重复性差,导致成像质量低,分析难度增加,使用起来很不方便。随着科学技术的发展,变频技术逐渐被人们所重视,介绍了一种以脉宽调制(PMW)技术为基础的X射线灯丝加热电源,该电源不是传统的变压器供电模式,采用可控硅调压供电方式,半桥式功率转换,经测试各项性能指标均满足X射线分析设备的要求,进一步提高了X射线机的稳定性。X-ray machine is a kind of important inspection equipment. Along with its widely use in medical treatment, industrial inspection and food security, there comes higher requirement in manufacturing technology and inspection precision. Then the power supply has become the focus of the research in this field. The traditional power supply adopts low-frequency technology, it is volume bulky, low efficiency, heavy energy consumption, low stability and lack of protective measures, which makes the X-ray unstable, poor repeatability and of low quality in imaging. Analysis difficulty rises under this condition. This paper introduces a kind of X-ray filament heating power supply based on pulse width modulation （PMW） technology. Instead of traditional transformer power supply, SCR technology is used in this design, with half bridge power conversion. The various indicators can meet the requirements of X-ray analysis equipment after testing and the stability of X-ray machines increases further.

关 键 词：X射线机 灯丝电源 半桥 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]