Conference Paper

Analysis of DC-Link capacitor losses in three-level neutral point clamped and cascaded H-Bridge voltage source inverters

Univ. of Southampton, Southampton, UK
DOI: 10.1109/ISIE.2010.5637820 Conference: Industrial Electronics (ISIE), 2010 IEEE International Symposium on
Source: IEEE Xplore

ABSTRACT Loss estimation is a critical aspect of inverter design. The present work investigates the losses occurring in the DC-link capacitors of the three-phase three-level Neutral Point Clamped and Cascaded H-Bridge inverter topologies, by performing a harmonic analysis of the capacitor currents. Results are verified by simulations. Their analysis reveals the advantage of the NPC inverter.

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