电力系统保护与控制Issue(6)：71-76,6.
基于无源性理论的电压不平衡条件下PWM整流器非线性控制策略
Nonlinear control of PWM rectifier based on passivity theory under unbalanced grid voltage
摘要
Abstract
Under the unbalanced grid voltage conditions, the PWM rectifier would produce 2nd harmonic in the DC voltage and negative sequence current in the AC side. In order to deal with these problems, this paper designs a nonlinear controller based on the passivity theory after analyzing the mathematical model of the PWM rectifier. A Matlab simulation model of the PWM rectifier is established. Finally, the nonlinear controller is checked and compared with the traditional dual dq-PI controller. The simulation results suggest that the nonlinear controller based on passivity theory could effectively restrain the DC voltage 2nd harmonic or AC side negative sequence current according to the control objectives and have a better dynamic performance than the traditional dual dq-PI controller.关键词
电压不平衡/PWM整流器/无源性理论/非线性控制/阻尼注入Key words
unbalanced voltage/PWM rectifier/passivity theory/nonlinear control/injection damping分类
信息技术与安全科学引用本文复制引用
吕学志,康忠健,梅永超..基于无源性理论的电压不平衡条件下PWM整流器非线性控制策略[J].电力系统保护与控制,2013,(6):71-76,6.基金项目
国家自然科学基金项目(61271001) （61271001）
中国石油大学(华东)研究生创新工程资助项目(CX-1244)This work is supported by National Natural Science Foundation of China (No.61271001) （华东）
