Efficiency Comparison between a Hybrid Cascaded Connected Seven Level Converter and a Standard Cascaded Connected Seven Level Converter for STATCOM Applications at 15 kV Utility Grids

摘要

This paper presents the dimensioning and comparison in terms of efficiency, cost and waveform quality of a Hybrid 7 Level converter and a Standard cascaded connected 7 Level converter for 26MVA and 15kV STATCOM applications. In addition, these converters are compared with commercially available 2 Level and 3 Level NPC VSCs.