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An adaptive multi-step balancing modulation technique for multi-point clamped converters

Cervone, A, Brando, G, Dordevic, O, Del Pizzo, A and Meo, S (2019) An adaptive multi-step balancing modulation technique for multi-point clamped converters. IEEE Transactions on Industry Applications. ISSN 0093-9994 (Accepted)

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Abstract

In this paper, a new pulse-width modulation technique is proposed for the output voltage control and the DC-bus capacitors voltage balancing of a Multi-Point Clamped multilevel converter. The voltage equalization is achieved by allowing each converter’s leg voltage to switch though multiple levels in a single modulation period (multi-step operation). The approach is generalized with respect to the number of levels and phases and can be applied regardless of the converter operating conditions. Nevertheless, the multi-step behaviour generally leads to an increase of the average switching transitions rate. In the proposed method, this drawback is mitigated with an online adaptive selection of the number of switching levels. The algorithm is validated through an extensive hardware-in-the-loop testing and compared to other approaches.

Item Type: Article
Additional Information: © 2019 IEEE
Uncontrolled Keywords: 08 Information and Computing Sciences, 09 Engineering
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering
Divisions: Electronics & Electrical Engineering
Publisher: Institute of Electrical and Electronics Engineers
Date Deposited: 03 Dec 2019 12:46
Last Modified: 03 Dec 2019 13:00
DOI or Identification number: 10.1109/TIA.2019.2949980
URI: http://researchonline.ljmu.ac.uk/id/eprint/11829

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