A novel SVM-DPC control method for grid connected AC-DC converters under asymmetrical fault

Author

Xiao, Lei ; Huang, Shoudao ; Liu, Ting ; Xu, Qiong ; Huang, Keyuan

Author_Institution

Coll. of Electr. & Inf. Eng., Hunan Univ., Changsha, China

fYear

2011

fDate

11-13 May 2011

Firstpage

1

Lastpage

6

Abstract

A Space Vector Modulated based on Direct Power Control (SVM-DPC) method applied to a AC-DC Converter connected to the unbalanced input voltages was present in this paper. Asymmetrical grid fault is the main reason caused large 2nd harmonic DC voltage ripple and 3nd harmonic Current in AC side, which severely threaten the safety of the power converter. By using three PI-RES Controller to adjust DC voltage and instantaneous power, the paper propose a control scheme that overcomes both these problems and without complex calculation of positive and negative sequences. In order to verify the effectiveness of the proposed algorithm, the simulation and experimental results are also presented.

Keywords

AC-DC power convertors; PWM power convertors; power control; power grids; power system faults; PI-RES Controller; SVM-DPC control method; asymmetrical grid fault; grid connected AC-DC converter; power converter; second harmonic DC voltage ripple; space vector modulated based on direct power control method; third harmonic current; unbalanced input voltage; AC-DC power converters; Fluctuations; Harmonic analysis; Power harmonic filters; Reactive power; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering, Energy and Electrical Drives (POWERENG), 2011 International Conference on

Conference_Location

Malaga

ISSN

2155-5516

Print_ISBN

978-1-4244-9845-1

Electronic_ISBN

2155-5516

Type

conf

DOI

10.1109/PowerEng.2011.6036496

Filename

6036496