Design and experimentation of a dynamic voltage restorer capable of significantly reducing an energy-storage element

Author

Jimichi, Takushi ; Fujita, Hideaki ; Akagi, Hirofumi

Author_Institution

Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Japan

Volume

2

fYear

2005

fDate

2-6 Oct. 2005

Firstpage

896

Abstract

This paper deals with a dynamic voltage restorer (DVR), or a voltage-sag compensator, which consists of a set of series and shunt converters connected back-to-back, three series transformers, and a dc capacitor installed on the common dc link. The DVR is characterized by installing the series converter on the source side and the shunt converter on the load side. This system configuration allows the use of an extremely small dc capacitor intended for smoothing the common dc-link voltage. This paper provides a design procedure of the dc capacitor under a voltage-sag condition, and proposes a control method for the series converter, which is capable of reducing the voltage ratings of both the series converter and the series transformers. Experimental results obtained from a 200-V, 5-kW laboratory system are shown to confirm the validity of the design procedure, and the effectiveness of the control method.

Keywords

design engineering; power capacitors; power convertors; power supply quality; power transformers; 200 V; 5 kW; dc capacitor; dynamic voltage restorer; energy-storage element; series converters; shunt converters; three series transformers; voltage-sag compensator; Batteries; Capacitors; Control systems; Costs; Insulated gate bipolar transistors; Power quality; Smoothing methods; Transformers; Uninterruptible power systems; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2005. Fourtieth IAS Annual Meeting. Conference Record of the 2005

ISSN

0197-2618

Print_ISBN

0-7803-9208-6

Type

conf

DOI

10.1109/IAS.2005.1518446

Filename

1518446