Multilevel electronic power converter
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United States of America Patent
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Jan 31, 2017
Grant Date -
May 15, 2014
app pub date -
Apr 29, 2011
filing date -
Apr 29, 2011
priority date (Note) -
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Abstract
The invention is a multilevel electronic DC/AC or AC/DC power converter for n output voltage levels with a positive branch (POS) with a positive DC voltage terminal (2), a negative branch (NEG) with a negative DC voltage terminal (1), and an AC voltage terminal (3) connected to the positive branch (POS) and to the negative branch (NEG), DC bus capacitors (4) interconnected between positive (2) and negative (1) DC voltage terminals and an intermediate DC voltage terminal (5) connected between the two DC bus capacitors (4); a plurality of first external controlled semiconductors (6) and second external controlled semiconductors (7) and, at least, one high-current DC capacitor (11), at least two high-frequency and low-current capacitors (12) and one intermediate controlled semiconductor (8) connected between the intermediate DC voltage terminal (5) and an intermediate terminal (10) of an internal branch (INT) connected in parallel with each high-current DC capacitor (11).
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