2016 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)
|
2016年
基金:
新加坡国家研究基金会;
关键词:
Power quality;
Unified Power Quality Conditioner (UPQC);
Harmonic compensation;
Repetitive controller (RC);
Single-phase system;
ACTIVE-FILTERS;
COMPENSATION;
INVERTER;
D O I:
暂无
中图分类号:
TE [石油、天然气工业];
TK [能源与动力工程];
学科分类号:
0807 ;
0820 ;
摘要:
This paper proposes a robust and flexible control strategy for a single-phase unified power quality conditioner (S-UPQC) to solve the power quality problem due to the distorted input supply voltage and the nonlinear load. In order to enhance the performance of the series and shunt active power filters (APFs) in S-UPQC, an advanced current and voltage control schemes are introduced based on the modified repetitive controller (RCs) connected with a proportional-integral (PI) controller. Unlike the conventional control scheme for the series and shunt APFs, the proposed scheme is implemented without any harmonic extractor. Furthermore, the dynamic performance is improved significantly due to the reduced delay time of the RC, and the computation time is also reduced. The effectiveness of the proposed control schemes for the S-UPQC is validated through simulation.