Dynamic Voltage Restorer For Voltage Sag Compensation

Author

Ramasamy, Agileswari K. ; Iyer, Rengan Krishnan ; Ramachandaramuthy, Vigna K ; Mukerjee, R.N.

Author_Institution

Power Quality Research Group, Department of Electrical Engineering, Universiti Tenaga Nasional, Kajang, Selangor. Malaysia, agileswari@uniten.edu.my

Volume

2

fYear

2005

Firstpage

1289

Lastpage

1294

Abstract

The Dynamic Voltage Restorer (DVR) is a power electronic device that is used to inject 3-phase voltage in series and in synchronism with the distribution feeder voltages in order to compensate for voltage sag. In this paper the operation of a DVR is presented. The power circuit of a DVR together with the control techniques used for compensation is explained. The operation of the Software Phase Locked Loop (SPLL) and its stability are analyzed. The DVR control system is described and verified using simulation. The control algorithm implemented using DSP was tested using generated input voltage signals and the results are also presented. The micro-cycle effect of battery current for balanced and unbalanced sag is also investigated.

Keywords

Dynamic Voltage Restorer; voltage sag; Circuit simulation; Circuit stability; Circuit testing; Control system synthesis; Digital signal processing; Phase locked loops; Power electronics; Stability analysis; Voltage control; Voltage fluctuations; Dynamic Voltage Restorer; voltage sag;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drives Systems, 2005. PEDS 2005. International Conference on

Print_ISBN

0-7803-9296-5

Type

conf

DOI

10.1109/PEDS.2005.1619886

Filename

1619886