基于双闭环控制技术的开关直流稳流电源  

A DC stabilized current supply based on double closed-loop control technique with PS-FB converter

作　　者：赵涛[1] 王相綦[1] 张海燕[1] 王琳[1] 李为民[1] 

机构地区：[1]中国科学技术大学国家同步辐射实验室,安徽合肥230029

出　　处：《中国科学技术大学学报》2007年第1期104-108,共5页JUSTC

基　　金：国家自然科学基金(10175062)资助

摘　　要：应用双闭环反馈控制技术,改善系统的动态性能,提高输出精度,设计了一台120A/95V的直流稳流电源,它由UC3875管理,工作频率为25 kHz.电源的输出电流精度好于1×10-5,且稳定性好、瞬态响应快.In design of a DC stabilized 120A/95V current supply, the double closed-loop control technique was employed to enhance the dynamic behavior of the system and to improve output precision. The internal voltage loop was used to regulate output voltage, whereas the external current loop was used to regulate the output current. Two advance-delay compensation nets were devised for every loop. A UC3875 chip operating at 25 kHz was used to manage the power supply. Theoretical analysis was conducted, and experimental results are shown for the power supply.

关 键 词：精度 双闭环控制 移相控制全桥变换器 直流稳流电源 

分 类 号：TM714.1[电气工程—电力系统及自动化]