一种高频电磁隔离的驱动方法研究  

A Study on High-frequency Electromagnetic Isolated Driving Method

作　　者：孙刚[1] 郑金燕[2] 方宇[2] 

机构地区：[1]南京信息职业技术学院科技处,南京210023 [2]扬州大学信息工程学院自动化系,江苏扬州225100

出　　处：《现代雷达》2016年第12期87-90,共4页Modern Radar

基　　金：国家自然科学基金资助项目(51377112);江苏省"六大人才高峰"高层次人才选拔对象C类基金资助项目(2014-ZNDW-003);江苏省自然科学基金项目资助项目(BK20151574)

摘　　要：针对电力电子电路高频化应用趋势,提出了一种高频电磁隔离驱动方法。文中分析了基于数字控制芯片和模拟电路实现电磁隔离驱动的工作原理,具体给出了硬件电路的设计和软件的配置方法。该电磁隔离驱动方法,能为脉宽连续变化的控制脉冲提供隔离放大,且脉冲占空比能在0-1.0的范围内进行调节,除了具有绝缘强度高,抑制共模干扰能力强等优点之外,还具有成本低、动态响应速度快的优点,适用于高功率密度要求下电力电子变换器中开关管的驱动。实验结果表明：研究的驱动方法是行之有效的,具有很好的实际应用价值。In view of the high frequency power electronic circuit application trend, a novel driving method implemented with high frequency electromagnetic isolation is proposed in this paper. And the hardware designing schematic diagram and the software con-figuration method are presented. Then the corresponding operating principle is analyzed in detail based on digital control chip and analog circuits. The proposed driving method can be applied to real-time varying pulse width of the control signal and the duty-cy-cle ratio of this control pulse can be regulated in the range of 0 to 1.0. This novel driving method can achieve not only the advanta-ges of high insulation and high common-mode suppression, but also the merits of low cost and fast dynamic response speed, and it is suitable for the isolation and amplification of high frequency switching control pulse signal. Finally, the experimental results show that the proposed driving method in this paper is effective.

关 键 词：电磁隔离 驱动电路 占空比 数字控制 

分 类 号：TM46[电气工程—电器]