A new power locus for the p-q operation of series connected 12-pulse current source controlled converters

Author

Hamad, Mostafa S. ; Masoud, Mahmoud I. ; Massoud, Ahmed M. ; Finney, Stephen J. ; Williams, Barry W.

Author_Institution

Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow

fYear

2008

fDate

15-19 June 2008

Firstpage

2264

Lastpage

2270

Abstract

The series connected 12-pulse current source converter can operate under controlled p-q operation with symmetrical or asymmetrical firing of the two series connected 6-pulse thyristor converters. The input power factor and input current total harmonic distortion (THD) are dependent on the converter power locus. In this paper, a new p-q locus is introduced where the maximum reactive power absorbed by the converter is halved, simultaneously providing minimum input current THD. The input current THD and power factor of the converter are investigated based on the proposed power locus. A compensation technique is mandatory in order to improve the performance. The proposed power locus reduces the compensator rating. The power locus performance of the 12-pulse converter is simulated and verified experimentally.

Keywords

compensation; harmonic distortion; power convertors; power factor; thyristor applications; 6-pulse thyristor converters; THD; compensation technique; input current total harmonic distortion; input power factor; maximum reactive power; p-q operation; power locus; series connected 12-pulse current source controlled converters; Bridge circuits; HVDC transmission; Medium voltage; Power system harmonics; Propagation delay; Reactive power; Rectifiers; Smoothing methods; Thyristors; Total harmonic distortion;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2008. PESC 2008. IEEE

Conference_Location

Rhodes

ISSN

0275-9306

Print_ISBN

978-1-4244-1667-7

Electronic_ISBN

0275-9306

Type

conf

DOI

10.1109/PESC.2008.4592278

Filename

4592278