A Novel Boost Cascaded Multilevel Inverter

Sze Sing Lee*, Yongheng Yang, Yam Siwakoti, Kyo-Beum Lee


Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review


This paper presents a novel cascaded multilevel inverter as an alternative to the cascaded H-bridge (CHB). By adopting two H-bridges integrated with two inductors and two power switches, the proposed topology is able to generate a five-level voltage with merely a single dc source. Voltage-boosting capability is guaranteed despite its single-stage operation. A corresponding modulation technique is also established to charge the boost inductors with a constant duty-cycle, while simultaneously generating an ac voltage with 5-level. Therefore, the proposed topology outperforms the CHB in reducing the isolated dc source count, enhancing the voltage gain, and lowering the dc source voltage magnitude. In addition, the modularity is preserved, where the proposed topology can be extended by cascading multiple modules. The operation and feasibility of the proposed cascaded multilevel inverter is analyzed and validated through experimental results.
TidsskriftI E E E Transactions on Industrial Electronics
Udgave nummer99
Sider (fra-til)1-9
Antal sider9
StatusAccepteret/In press - aug. 2020

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