Title :
Multi-level current reinjection in double-bridge self-commutated current source conversion
Author :
Perera, Lasantha B. ; Liu, Yonghe H. ; Watson, Neville R. ; Arrillaga, Jos
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Canterbury, Christchurch, New Zealand
fDate :
4/1/2005 12:00:00 AM
Abstract :
A new self-commutated current source converter is proposed, based on the reinjection of multi-level dc current pulses via a GTO-switched multi-tapped interphase reactor. The ideal reinjection waveform for complete elimination of the harmonic content of the ac system side current is derived and a practical approximation proposed to increase the pulse number of the double-bridge converter to any multiple of twelve. A 48-pulse configuration is analyzed in detail to show the new concept effectiveness on both the ac and dc sides of the converter.
Keywords :
AC-DC power convertors; bridge circuits; harmonics suppression; thyristors; AC-DC conversion; double-bridge self-commutated current source conversion; harmonic elimination; multilevel current reinjection; multilevel dc current pulses; waveform reinjection; Analog-digital conversion; Bridge circuits; Frequency; Inductors; Power harmonic filters; Power system harmonics; Pulse power systems; Pulse transformers; Switches; Thyristors; AC-DC conversion; current source conversion; harmonics; multilevel;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2005.844277
