Abstract—Recently, multilevel inverters have become more
attractive for researchers due to low total harmonic distortion
(THD) in the output voltage and low electromagnetic
interference (EMI). This paper proposes a single-phase
cascaded H-bridge quasi switched boost inverter (CHB-qSBI)
for renewable energy sources applications. The proposed
inverter has the advantage over the cascaded H-bridge
quasi-Z-source inverter (CHB-qZSI) in reducing two capacitors
and two inductors. As a result, cost, weight and size are reduced.
Furthermore, the dc-link voltage of each module is controlled by
individual shoot-through duty cycle to get the same values.
Therefore, the proposed inverter solves the imbalance problem
of dc-link voltage in traditional CHB inverter. This paper shows
the operating principles and analysis of the single-phase
cascaded H-bridge quasi switched boost inverter. Also, A
control strategy for the proposed inverter is shown.
Experimental and Simulation results are shown to verify the
operating principle of the proposed inverter.
Index Terms—Renewable energy sources, cascaded H-bridge
inverter, quasi switched boost inverter, quasi Z-source inverer,
shoot-through state, multilevel inverter.
Van-Thuan Tran is with Department of Telecommunications Operation,
Telecommunication University, Viet Nam (e-mail: thuantsttq@gmail.com).
Minh-Khai Nguyen, Pan-Gum Jung, Youn-Ok Choi, and Geum-Bae Cho
are with Department of Electrical Engineering, Chosun University, Gwangju,
Korea (e-mail: khaibk@ieee.org; thuantstt@yahoo.com;
thuantran27081974@gmail.com; nmkhai00@gmail.com).
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Cite:Van-Thuan Tran, Minh-Khai Nguyen, Pan-Gum Jung, Youn-Ok Choi, and Geum-Bae Cho, "A Single-Phase Cascaded H-bridge Quasi Switched Boost Inverter for Renewable Energy Sources Applications," Journal of Clean Energy Technologies vol. 6, no. 1, pp. 26-30, 2018.
