Five-level T-type NPC PFC rectifier based on multistate switching cell

This paper presents a proof of concept of a new converter cell named T-type multistate switching cell (TT-MSSC). The proposed cell was derived from the three-phase current fed DC-DC Push-Pull converter with NPC output rectifier and can provide both AC-DC and DC-AC conversions for single-phase, three...

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Bibliographic Details
Published in2015 IEEE 13th Brazilian Power Electronics Conference and 1st Southern Power Electronics Conference (COBEP/SPEC) pp. 1 - 6
Main Authors Barboza, Jose A. L., Filho, Olympio C. S., Mazza, Luan C. S., Bascope, Rene P. T.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2015
Subjects
DC-AC power converters
Five-level
Inductors
Multistate Switching Cell
Neutral Point Clamped
Power factor correction
Rectifier
Rectifiers
Semiconductor diodes
Switches
Topology
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Summary:This paper presents a proof of concept of a new converter cell named T-type multistate switching cell (TT-MSSC). The proposed cell was derived from the three-phase current fed DC-DC Push-Pull converter with NPC output rectifier and can provide both AC-DC and DC-AC conversions for single-phase, three-phase or multi-phase configurations. Based on the proposed cell, a single-phase unidirectional converter is proposed which provides the following features: power factor correction, current sharing through devices, symmetrical voltage division across semiconductors, inductor current ripple with twice switching frequency, and five level voltage formation between ground point and common point of the autotransformer. To verify the operation principle, a prototype with the input voltage Vi = 220 V (rms), output voltage Vo = 800 V, and output power Po = 1 kW was implemented and tested in laboratory.
DOI:10.1109/COBEP.2015.7420282