Hybridized SVPWM Algorithm for Multilevel CHB Inverter With DC-Link Voltage Control Capability - Publikacja - MOST Wiedzy

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Hybridized SVPWM Algorithm for Multilevel CHB Inverter With DC-Link Voltage Control Capability

Abstrakt

The deployment of a space vector pulsewidth modulation (SVPWM) scheme in controlling cascaded H-bridge multilevel inverter (CHB MLI) is quite challenging; especially, when a substantial number of output voltage levels are involved and the dc-link voltages are out of balance. In this article, a simple SVPWM algorithm for CHB MLI is proposed. In the proposed algorithm, all the H-bridges in an inverter phase are treated as a single H-bridge. Consequently, the CHB MLI can be treated as a three-level cascaded H-bridge (CHB) inverter, regardless of the number of series-connected H-bridges. This approach simplifies the construction of the space vector diagram even in dc-link voltage imbalance scenarios. The proposed voltage balancing strategy is based on two approaches: interphase balancing and energy exchange between H-bridges in a phase of the CHB MLI. The former is realized by the appropriate selection of active vectors for an equivalent three-level CHB inverter. The latter is realized through the appropriate distribution of duty factors, determined in the first step of the algorithm; their unity or zero values operate the H-bridges in actively connected or bypassed modes in view of commutation losses reduction. Simulation and experimental results are presented for the authentication of the proposed algorithm on a seven-level CHB MLI.

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Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
IEEE TRANSACTIONS ON POWER ELECTRONICS nr 39, strony 13248 - 13261,
ISSN: 0885-8993
Język:
angielski
Rok wydania:
2024
Opis bibliograficzny:
Lewicki A., Odeh C., Morawiec M.: Hybridized SVPWM Algorithm for Multilevel CHB Inverter With DC-Link Voltage Control Capability// IEEE TRANSACTIONS ON POWER ELECTRONICS -Vol. 39,iss. 10 (2024), s.13248-13261
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1109/tpel.2024.3426073
Źródła finansowania:
  • IDUB
Weryfikacja:
Politechnika Gdańska

wyświetlono 18 razy

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