基于软开关的X射线电源系统及电磁兼容问题  

Basd on ZCS-PWM Power Supply for X-ray Generator and Ii’s EMC Discussion

作　　者：王昌[1] 邱瑞昌[1] 李虹[1] 

机构地区：[1]北京交通大学电气工程学院,北京100044

出　　处：《电子质量》2006年第9期75-78,共4页Electronics Quality

摘　　要：本文主要介绍一种最新研制的可调直流高压电源以及调试过程中的电磁兼容问题。创新的主电路的拓扑结构由PFC(功率因数校正)模块、BUCK模块、逆变电路、高频变压器和倍压电路组成。电源利用变压器的寄生参数谐振工作,利用软开关技术实现了ZCS低损耗。PFC模块能使此电源系统使用与国内和国外市场并且减小对电网的谐波污染。各个模块在调试种出现了各种各样的干扰问题,文章从接地,布局,布线,滤波等方面介绍了问题的解决方法。This paper mainly introduces a new-developed adjustable high-voltage DC power supply and it＇s EMC. The supply has a novel topology comprised a PFC module,a BUCK circuit and a series-parallel transformer, multiplier voltage. A constant on-time/fixed frequency control scheme inverter using the parasitic parameter of special-designed high-frequency high-voltage transformer implements ZCS. At the same time introducing the PEG module can greatly cuts down the harmonic current and adapt to various line voltage ratings even the unsteadily voltage. These modules occur many interference questions, this paper gives the solution from connecting ground, placement, routing, filter and so on.

关 键 词：AXI 软开关 EMC PFC 谐振 倍压 

分 类 号：TN86[电子电信—信息与通信工程]