Direct power control system under unbalanced network voltage

Author

Zhao, Zhangfei ; Han, Yaofei ; Fan, Xiaohong

Author_Institution

Dept. of Electr. & Electron. Eng., Henan Univ. of Urban Constr., Pingdingshan, China

fYear

2011

fDate

16-18 Sept. 2011

Firstpage

5849

Lastpage

5852

Abstract

Based on the mathematical model of the three-level PWM rectifier, its power mathematical model was obtained by combining with instantaneous power theory. And the power expression was obtained by analyzing the rectifier under unbalanced network voltage. On this basis, the DPC-SVM control strategy to restrain the negative sequence components of the three-phase current on AC side under unbalanced network voltage was proposed. The simulation results and experiment tests show that the control strategy mentioned above can restrain the negative sequence components on AC side effectively.

Keywords

PWM rectifiers; power control; DPC-SVM control strategy; direct power control system; instantaneous power theory; mathematical model; negative sequence components; three-level PWM rectifier; unbalanced network voltage; Harmonic analysis; Power harmonic filters; Pulse width modulation; Reactive power; Rectifiers; Voltage control; DPC-SVM; the inhibition of negative sequence components on AC side; three-level; unbalanced;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Control Engineering (ICECE), 2011 International Conference on

Conference_Location

Yichang

Print_ISBN

978-1-4244-8162-0

Type

conf

DOI

10.1109/ICECENG.2011.6057132

Filename

6057132