Improved Converter Design Use of SHE-PWM for Harmonic Immunity in VSC HVDC Transmission
Journal Title: International Journal of Science Engineering and Advance Technology - Year 2015, Vol 3, Issue 12
Abstract
The idea of multilevel inverters, presented around 20 years back involves performing power change in various voltage ventures to get enhanced force quality, lower exchanging misfortunes, better electromagnetic similarity, and higher voltage capacity. The advantages are particularly clear for medium-voltage drives in modern applications and are being considered for future maritime boat impetus frameworks. A few topologies for multilevel inverters have been proposed throughout the years; the most well-known fell H-connect separated from other multilevel inverters is the ability of using distinctive dc voltages on the individual H-span cells which brings about part the force change amongst higher-voltage lower recurrence and lower-voltage higher-recurrence inverters. Control strategies in view of specific consonant end beat width tweak (SHE-PWM) systems offer the most reduced conceivable number of exchanging moves. This component likewise brings about the most reduced conceivable level of converter exchanging misfortunes. Thus, they are exceptionally alluring methods for the voltage-source-converter-(VSC) based high-voltage dc (HVDC) power transmission frameworks. The paper talks about improved regulation examples which offer controlled symphonious safety between the air conditioner and dc side. The application concentrates on the routine two-level converter when its dc-join voltage contains a blend of low recurrence symphonious segments. Reenactment and trial results are introduced to affirm the legitimacy of the proposed exchanging designs. At long last a five level multilevel converter topology is connected for this application.
Authors and Affiliations
Gopala Narsupalli| Student of M.Tech (Power Systems) and Department of EEE in Gokul Group of Institutions, Vizianagaram, R. Srinivas Rao| Assist.Prof, Department of EEE in Gokul Group of Institutions, Vizianagaram, India
Keywords
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