Synchronous PI decoupling control scheme for dynamic voltage restorer against a voltage sag in the power system

Author

Kim, Myung-Bok ; Moon, Gun-Woo ; Youn, Myung-Joong

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., South Korea

Volume

2

fYear

2004

fDate

20-25 June 2004

Firstpage

1046

Abstract

A new control strategy for driving the dynamic voltage restorer (DVR) is proposed. It is based on the synchronous PI decoupling control strategy which features fast response and low steady state error. Therefore, the proposed control strategy shows the faster action against voltage sag and guarantees more enough compensation for the sagged supply voltages. In addition, since the currents flowing through the ripple filter inductor are used as the supplementary control variables, it is possible to protect the switching power device against the surge current in the proposed control strategy. The experimental results implemented with TMS320C3x DSP control unit are shown to validate the effectiveness of the proposed control strategy.

Keywords

PI control; digital signal processing chips; power filters; power system control; voltage control; TMS320C3x DSP control; dynamic voltage restorer; power system; ripple filter inductor; supplementary control variables; surge current; switching power device; synchronous PI decoupling control scheme; voltage sag; Control systems; Error correction; Filters; Power system control; Power system dynamics; Power system restoration; Power systems; Steady-state; Voltage control; Voltage fluctuations;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual

ISSN

0275-9306

Print_ISBN

0-7803-8399-0

Type

conf

DOI

10.1109/PESC.2004.1355565

Filename

1355565