Comprehensive switching functions approach to calculate harmonics produced by multipulse thyristor converters operating under unbalanced supply

Author

Ngandui, Éloi ; Olivier, Guy ; April, Georges-Émile ; Ba, Amadou Out

Author_Institution

Dept. of Electr. & Comput. Eng., Ecole Polytech. de Montreal, Que., Canada

Volume

2

fYear

1998

fDate

14-18 Oct 1998

Firstpage

837

Abstract

This paper describes how a comprehensive switching functions approach can be used to calculate both AC and DC harmonics produced by multipulse thyristor converters operating under nonideal supply conditions. Calculations include unbalanced voltage supply, asymmetric commutating impedances and phase-shift imbalances between transformers. The proposed approach enables easy incorporation of both the zero crossing and the equally spaced firing pulse methods. The validity of the proposed approach is demonstrated by comparison with the results of time domain simulation

Keywords

commutation; electric impedance; power conversion harmonics; switching circuits; thyristor convertors; time-domain analysis; transformers; AC harmonics calculation; DC harmonics calculation; asymmetric commutating impedances; equally spaced firing pulse methods; harmonics calculation; multipulse thyristor converters; nonideal supply conditions; phase-shift imbalances; switching functions approach; time domain simulation; transformers; unbalanced supply; zero crossing; Analog-digital conversion; Electrical equipment industry; Electricity supply industry; Fourier series; Frequency domain analysis; Impedance; Pulse transformers; Switching converters; Thyristors; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Harmonics and Quality of Power Proceedings, 1998. Proceedings. 8th International Conference On

Conference_Location

Athens

Print_ISBN

0-7803-5105-3

Type

conf

DOI

10.1109/ICHQP.1998.760151

Filename

760151