Title :
Multilevel current reinjection self-commutated HVDC converter
Author :
Perera, L.B. ; Watson, N.R. ; Liu, Y.H. ; Arrillaga, J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Canterbury, Christchurch, New Zealand
Abstract :
A new self-commutated AC-DC converter is proposed based on the reinjection of multilevel DC pulses via the mid-point of the series double-bridge converter using a GTO-switched multitapped single-phase transformer. The ideal reinjection waveform for complete elimination of the harmonic content of the AC-side current is derived and a practical approximation proposed to increase the pulse number of double-bridge converters to any multiple of 12. A 60-pulse configuration is analysed in detail to show effectiveness on both the AC and DC sides of the converter.
Keywords :
AC-DC power convertors; HVDC power convertors; bridge circuits; harmonics suppression; power conversion harmonics; power transformers; switching convertors; thyristor convertors; AC-DC converter; DC pulses; GTO; double-bridge converter; gate turn-off; harmonic elimination; ideal reinjection waveform; multilevel current reinjection; multitapped single-phase transformer; self-commutated HVDC converter;
Journal_Title :
Generation, Transmission and Distribution, IEE Proceedings-
DOI :
10.1049/ip-gtd:20045144
