Synthetic Test Circuit for Thyristor Valve in HVDC Converter with New High-Current Source

Author

Eui-Cheol Nho ; Byung-Moon Han ; Yong Ho Chung ; Seung Taek Baek ; Jae-Hun Jung

Author_Institution

Dept. of Electr. Eng., Pukyong Nat. Univ., Busan, South Korea

Volume

29

Issue

7

fYear

2014

fDate

Jul-14

Firstpage

3290

Lastpage

3296

Abstract

Synthetic test circuit (STC) for thyristor valve test consists of a low-voltage high-current source to provide the forward current during turn-on state and a low-current high-voltage source to provide the reverse and forward voltage during turn-off state. This paper proposes a new low-voltage high-current source for STC that has a six-pulse thyristor converter and a two-phase chopper with an auxiliary switch. The operation of STC with a new low-voltage high-current source was verified through theoretical analysis and computer simulations with PSCAD/EMTDC. Based on computer simulation results, a scaled hardware system for the proposed circuit was built and tested to confirm the feasibility of implementing a real-size STC.

Keywords

HVDC power convertors; choppers (circuits); power engineering computing; switching convertors; thyristor applications; EMTDC; HVDC converter; PSCAD; STC; auxiliary switch; computer simulations; forward voltage; low-current high-voltage source; low-voltage high-current source; reverse voltage; six-pulse thyristor converter; synthetic test circuit; thyristor valve test; turn-off state; turn-on state; two-phase chopper; Capacitors; HVDC transmission; Insulated gate bipolar transistors; RLC circuits; Switches; Thyristors; Valves; Auxiliary switch; high-voltage dc (HVDC) converter; synthetic test circuit (STC); thyristor valve; two-phase chopper;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2013.2279716

Filename

6588291