Disturbance rejection strategies for AC/DC microgrids

Author

Po-Chun Liu ; Elmoursi, M. ; Xiao, W.

Author_Institution

IEnergy Center, Masdar Inst. of Sci. & Technol., Abu Dhabi, United Arab Emirates

fYear

2015

fDate

1-4 Feb. 2015

Firstpage

1

Lastpage

6

Abstract

Generation reliability is always a main topic in power systems. Disturbance rejection strategies should be developed to mitigate transient disturbance and ensure stability of energy supply for distributed generation system (DGS). In this study, doubly-fed induction generator (DFIG) and DC-DC step-down converter are exemplified as AC and DC microgrids, respectively. Two transient management to handle voltage dip of the utility grid, specifically for the DFIG topology have been discussed. For a DC/DC converter, an average current sharing (ACS) scheme for secondary control is introduced. Technique to specify parameters for PI control is also implemented. Simulation results are provided for validation.

Keywords

DC-DC power convertors; PI control; asynchronous generators; distributed power generation; power generation control; power generation faults; power generation reliability; power grids; power system transient stability; AC-DC microgrid; ACS scheme; DC-DC step-down converter; DFIG; DGS; PI control; average current sharing scheme; distributed generation system; disturbance rejection strategy; doubly-fed induction generator; energy supply stability; power generation reliability; secondary control; transient disturbance mitigation; utility power grid; voltage dip; Electricity; Stators; Switches; Topology; Transfer functions; Voltage control; Voltage fluctuations; distributed power generation; microgrids; power systems;

fLanguage

English

Publisher

ieee

Conference_Titel

GCC Conference and Exhibition (GCCCE), 2015 IEEE 8th

Conference_Location

Muscat

Type

conf

DOI

10.1109/IEEEGCC.2015.7060053

Filename

7060053