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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
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- 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
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