电网技术Issue(5)：1230-1236,7.
三电平H桥直流换流器电流连续模式下的建模与控制器设计
Modeling and Controller Design of Three-Level H-Bridge DC/DC Converter Under Continuous Conduction Mode
摘要
Abstract
To improve dynamic and static performance of converter output it is necessary to design a controller with preferable performance. The principle of phase-shift pulse width modulation (PWM) for the converter is analyzed; the static state operating point under continuous conduction mode (CCM) is solved and all operating modes within a switching period are given. Based on state space averaging method a small signal model of converter under continuous conduction mode is established, and according to the small signal model a double closed-loop proportion integration (PI) controller with feedforward compensation is designed. Results of experimental investigation show that by the action of the designed controller the maximum output voltage dip during suddenly loading is less than 15% and it recovers within 150ms, therefore the designed controller possesses good output characteristic and the effectiveness of the controller is verified.关键词
三电平H桥/脉宽调制/电流连续模式/小信号模型Key words
three-level H bridge/PWM/continuous conduction mode/small signal model分类
信息技术与安全科学引用本文复制引用
谢桢,魏建勋,付立军,肖飞,王恒利..三电平H桥直流换流器电流连续模式下的建模与控制器设计[J].电网技术,2013,(5):1230-1236,7.基金项目
国家重点基础研究发展计划项目(973项目)(2012CB215103)。@@@@The National Basic Research Program of China(973 Program)(2012CB215103) （973项目）
