Open AccessNeutral‐point clamped n ‐level multilevel converter without dead time and shoot‐through problem
Author(s) -
Lee E.C.,
Choi N.S.,
Kim H.J.
Publication year - 2017
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2017.1835
Subject(s) - commutation , topology (electrical circuits) , buck–boost converter , control theory (sociology) , dead time , point (geometry) , inverter , modulation (music) , buck converter , mathematics , control (management) , computer science , boost converter , engineering , voltage , physics , electrical engineering , statistics , geometry , artificial intelligence , acoustics
A generalised n ‐level multilevel converter that has no shoot‐through problem and thus is operated without dead time at each commutation is proposed. It is obtained by modifying the traditional neutral‐point clamped multilevel converter topology based on dual‐buck converter concept. The m ‐phase n ‐level converter can be readily constructed by using the proposed multilevel converter topology. The half‐bridge five‐level inverter, as an example case, is presented along with the operating principle and modulation and control methods. Experimental results show the feasibility and validity of the proposed converter.