Sze Sing Lee, Chee Shen Lim, Yam P. Siwakoti, and Kyo-Beum Lee, "A Novel Five Level Boost Inverter with Common AC and DC Ground," IEEE Transactions on Industrial Electronics, in press. -SCI > Paper

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Paper

International Journals Sze Sing Lee, Chee Shen Lim, Yam P. Siwakoti, and Kyo-Beum Lee, "A Novel Five Level Boost Inverter with Common AC and DC Ground," IEEE Transactions on Industrial Electronics, in press. -SCI

2021

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Five-level boost inverter with common ac and dc ground is an emerging topology introduced for photovoltaic applications. Despite the merit of

effective leakage current elimination, the existing topologies which are developed based on the switched-capacitor concept inherit several critical

issues such as current spikes, large capacitor voltage ripple, and discontinuous dc source current that hinder their practical implementation. This

paper proposes a novel five-level common-ground topology that not only resolves all the aforementioned issues but also provides flexible boosting of

voltage gain and enhanced output voltage quality. The proposed topology comprises two identical converters where each converter is able to

accomplish simultaneous ac voltage generation and boosting of dc-link voltage within a singlestage operation. The proposed topology and its

corresponding pulse-width-modulation technique are analyzed. Simulation and experimental results are performed to demonstrate the validity and

effectiveness of the proposed topology. 

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