Low-Frequency State-Space Model for the Five-Level Unidirectional T-Rectifier

This paper presents the analysis and the validation of the large-signals model of a new five-level T-type unidirectional three-phase rectifier topology known as 5L T-RECT. Proposed modeling approach is mainly based on the well-known state-space averaging technique. According to this technique, the a...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2017-03, Vol.53 (2), p.1127-1137
Main Authors: Di Benedetto, Marco, Lidozzi, Alessandro, Solero, Luca, Crescimbini, Fabio, Grbovic, Petar J.
Format: Article
Language:English
Subjects:
AC-DC power conversion
Analytical models
Capacitors
Mathematical model
modeling
multilevel power electronic converters
Numerical models
power electronics
Rectifiers
state space methods
Switches
Topology
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Summary:This paper presents the analysis and the validation of the large-signals model of a new five-level T-type unidirectional three-phase rectifier topology known as 5L T-RECT. Proposed modeling approach is mainly based on the well-known state-space averaging technique. According to this technique, the averaging process is applied across one pulse width modulation sampling period T S , thus resulting in the basic 5L T-RECT mathematical model. Consequently, the ac-dc steady-state operation is analyzed through the achieved model. The large-signals model of the 5L T-RECT has been verified by means of the direct comparison with the converter full digital-switching model, realized in the MATLAB/Simulink environment. Simulation results exhibit a good matching with the proposed average model.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2016.2621107