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A generalized multilevel inverter topology with self voltage balancing

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1 Author(s)
Fang Zheng Peng ; Dept. of Electr. & Comput. Eng., Michigan State Univ., East Lansing, MI, USA

Multilevel power converters that provide more than two levels of voltage to achieve smoother and less distorted AC-to-DC, DC-to-AC, and DC-to-DC power conversion, have attracted many contributors. This paper presents a generalized multilevel inverter (converter) topology with self voltage balancing. The existing multilevel inverters such as diode-clamped and capacitor-clamped multilevel inverters can be derived from the generalized inverter topology. Moreover, the generalized multilevel inverter topology provides a true multilevel structure that can balance each DC voltage level automatically without any assistance from other circuits, thus, in principle, providing a complete and true multilevel topology that embraces the existing multilevel inverters. From this generalized multilevel inverter topology, several new multilevel inverter structures can be derived. Some application examples of the generalized multilevel converter are given

Published in:

IEEE Transactions on Industry Applications  (Volume:37 ,  Issue: 2 )