TY - GEN
T1 - Low switching frequency modulation strategies with low impact on the mains, suitable for a for a large power voltage sourced converter that employs reduced VA-rating coupling magnetic elements
AU - Chivite-Zabalza, F. J.
AU - Rodriguez, M. A.
AU - Izurza, P.
AU - Calvo, G.
AU - Madariaga, D.
AU - Larrazabal, I.
PY - 2012
Y1 - 2012
N2 - This paper presents a review of modulation strategies that can be applied on a novel large power voltage source converter arrangement. This arrangement employs four three-level, three-phase neutral-point-clamped inverters, combined by means of low volt-ampere rating intermediate magnetic elements. The 12 resulting inverter poles are paralleled up in pairs by using six interphase transformers (IPTs), and their outputs are connected in series by using a simple openwye/ delta transformer, rated to 50% of the power throughput. Due to the inherent harmonic cancelation provided, the converter is suited for the use of various low-switching frequency modulation strategies. In this paper full, wave modulation and three different Selective Harmonic Elimination strategies are described, all obtaining a clean output waveform, in some cases comparable to that of a 48-pulse converter. The converter components and its operation are explained, and experimental results are provided.
AB - This paper presents a review of modulation strategies that can be applied on a novel large power voltage source converter arrangement. This arrangement employs four three-level, three-phase neutral-point-clamped inverters, combined by means of low volt-ampere rating intermediate magnetic elements. The 12 resulting inverter poles are paralleled up in pairs by using six interphase transformers (IPTs), and their outputs are connected in series by using a simple openwye/ delta transformer, rated to 50% of the power throughput. Due to the inherent harmonic cancelation provided, the converter is suited for the use of various low-switching frequency modulation strategies. In this paper full, wave modulation and three different Selective Harmonic Elimination strategies are described, all obtaining a clean output waveform, in some cases comparable to that of a 48-pulse converter. The converter components and its operation are explained, and experimental results are provided.
KW - Flexible AC transmission systems (FACTS)
KW - Insulated gate bipolar transistor (IGBT)
KW - Interphase transformer (IPT)
KW - Selective harmonic elimination (SHE)
UR - http://www.scopus.com/inward/record.url?scp=84879655325&partnerID=8YFLogxK
U2 - 10.1049/cp.2012.1981
DO - 10.1049/cp.2012.1981
M3 - Conference contribution
AN - SCOPUS:84879655325
SN - 9781849197007
T3 - IET Conference Publications
BT - 10th IET International Conference on AC and DC Power Transmission, ACDC 2012
T2 - 10th IET International Conference on AC and DC Power Transmission, ACDC 2012
Y2 - 4 December 2012 through 5 December 2012
ER -