THREE-LEVEL F-TYPE INVERTER

Charles Odeh; Arkadiusz Lewicki; Marcin Morawiec; Dmytro Kondratenko

doi:10.1109/tpel.2021.3071359

THREE-LEVEL F-TYPE INVERTER

Abstract

Given the recent available IGBT switch modules up to 6.5 kV, 1200 A rating, the prospect of the diode-free variant topology of the three-level neutral-point-clamped (3-level, T-type) inverter in certain medium voltage applications is bright; due to its small part count and low conduction losses compared to the diode-clamped NPC inverter. However, within this voltage range, the input dc voltage rating of 50% of the switches per inverter phase-leg still poses limitations to the deployment of 3-level T-type inverter. In view of these limitations, a reconfigured four-switch per phase-leg power circuit for 3-level inverter (F-type) is presented in this paper. The common node of the bidirectional switch in T-type inverter is explored to have only one power switch rated at input dc voltage and 3 switches rated at half the input dc voltage, per inverter-leg. This reduced voltage stress has inverter cost and loss implications. The performances and competitiveness of the three-level, F-type inverter are analyzed in detail and demonstrated with a hardware prototype. Results reveal that it has the potentials of being considered a real alternative to 3-level, T-type inverters for certain low- and medium-voltage applications.

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Authors (4)

Charles Odeh
- Department of Electrical Engineering, University of Nigeria
Arkadiusz Lewicki dr hab. inż.
Marcin Morawiec prof. dr hab. inż.
Dmytro Kondratenko mgr inż.

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Keywords

INVERTERS, SWITCHES, SWITCHING CIRCUITS, MODULATION, STRESS, TOPOLOGY, SEMICONDUCTOR DIODES

Details

Category:: Articles
Type:: artykuły w czasopismach
Published in:: IEEE TRANSACTIONS ON POWER ELECTRONICS no. 36, pages 11265 - 11275,
ISSN: 0885-8993
Language:: English
Publication year:: 2021
Bibliographic description:: Odeh C., Lewicki A., Morawiec M., Kondratenko D.: THREE-LEVEL F-TYPE INVERTER// IEEE TRANSACTIONS ON POWER ELECTRONICS -,iss. 36/10 (2021), s.11265-11275
DOI:: Digital Object Identifier (open in new tab) 10.1109/tpel.2021.3071359
Verified by:: Gdańsk University of Technology