A grid-interfacing power quality compensator for three-phase three-wire microgrid applications

被引:125
作者
Li, Yun Wei [1 ]
Vilathgamuwa, D. Mahinda [1 ]
Loh, Poh Chiang [1 ]
机构
[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
关键词
fault current limitation; flux-charge-model control; microgrid; positive- and negative-sequence; power quality compensator;
D O I
10.1109/TPEL.2006.876844
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper proposes a grid-interfacing power quality compensator for three-phase three-wire microgrid applications with consideration of both the power quality of the microgrid and the quality of currents flowing between the microgrid and utility system. It is proposed that two inverters connected in shunt and series are used for each distributed generation (DG) system in the microgrid. In each inverter, both positive- and negative-sequence components are controlled to compensate for the effects caused by the unbalanced utility grid voltages. Specifically, the shunt inverter is controlled to ensure balanced voltages within the microgrid and to regulate power dispatches among parallel-connected DG systems, while the series inverter balances the line currents by injecting appropriate voltage components. A current-limiting algorithm is also proposed and integrated within the inverter control schemes to protect the microgrid from large fault currents during utility voltage sags. The proposed compensator has been tested in simulations and experimentally using a laboratory hardware prototype.
引用
收藏
页码:1021 / 1031
页数:11
相关论文
共 13 条
[1]   Analysis and design of a multiple feedback loop control strategy for single-phase voltage-source UPS inverters [J].
AbdelRahim, NM ;
Quaicoe, JE .
IEEE TRANSACTIONS ON POWER ELECTRONICS, 1996, 11 (04) :532-541
[2]  
Bollen M.H.J., 2000, Series on Power Engineering
[3]  
Dugan R, 1996, ELECT POWER SYSTEMS
[4]  
FUNATO H, 2000, P IEEE POW EL SPEC C, V3, P1195
[5]  
FUNATO H, 2001, P IEEE APPL POW EL C, V2, P1281
[6]  
HEINE P, 2001, P IEEE POW TECH C, P6
[7]   Current control of unbalanced electrical systems [J].
Jacobina, CB ;
Corrêa, MBD ;
Oliveira, TM ;
Lima, AMN ;
da Silva, ERC .
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2001, 48 (03) :517-525
[8]  
Lasseter RH, 2002, 2002 IEEE POWER ENGINEERING SOCIETY WINTER MEETING, VOLS 1 AND 2, CONFERENCE PROCEEDINGS, P305, DOI 10.1109/PESW.2002.985003
[9]   Design, analysis, and real-time testing of a controller for multibus microgrid system [J].
Li, YW ;
Vilathgamuwa, DM ;
Loh, PC .
IEEE TRANSACTIONS ON POWER ELECTRONICS, 2004, 19 (05) :1195-1204