Optimal firing-angle control of cascaded HVDC converters for minimum harmonic currents

Author

Deib, D.A. ; Hill, H.W. ; Shepherd, W.

Author_Institution

Dept. of Electr. & Comput. Eng., Ohio Univ., Athens, OH, USA

fYear

1993

fDate

15-19 Nov 1993

Firstpage

1071

Abstract

An optimal firing strategy for N cascaded, 6-pulse, phase-controlled power converters of a HVDC link is proposed. Minimization of the harmonic currents injected into the AC system (by both the inverters and rectifiers) is achieved through simultaneous control of the firing angles of the N power converters. With relatively low values of N (4 12-pulse, or 8 6-pulse), the resultant AC current harmonics are substantially lower than for comparable 12- or 6-pulse converters. Also, the DC voltage harmonics are greatly reduced over 12-pulse operation

Keywords

DC power transmission; optimal control; phase control; power control; power convertors; power system control; power system harmonics; power system interconnection; thyristor applications; AC current harmonics; DC voltage harmonics; HVDC link; interconnection; inverters; minimization; minimum harmonic currents; optimal firing angle control; phase control; power converters; power systems; rectifiers; simultaneous control; thyristors; Active filters; HVDC transmission; Inverters; Optimal control; Power harmonic filters; Power system harmonics; Pulse power systems; Pulse transformers; Reactive power; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, Control, and Instrumentation, 1993. Proceedings of the IECON '93., International Conference on

Conference_Location

Maui, HI

Print_ISBN

0-7803-0891-3

Type

conf

DOI

10.1109/IECON.1993.339126

Filename

339126