Sze Sing Lee, Yongheng Yang, Yam Prasad Siwakoti, and Kyo-Beum Lee, "A Novel Boost Cascaded Multilevel Inverter," IEEE Transactions on Industrial Electronics, vol. 68, no. 9, pp. 8072-8080, Sep. 2021. -SCI > Paper

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International Journals Sze Sing Lee, Yongheng Yang, Yam Prasad Siwakoti, and Kyo-Beum Lee, "A Novel Boost Cascaded Multilevel Inverter," IEEE Transactions on Industrial Electronics, vol. 68, no. 9, pp. 8072-8080, Sep. 2021. -SCI

2021

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This article 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 a five-level ac voltage. 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 simulation and experimental results.

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