Soft-switching modulation algorithm-based reconfiguration of cascaded H-bridge inverters under DC source failures

Xiong, Jinfei; Zhou, Fulin; Li, Qunzhan

doi:10.1007/s43236-021-00251-7

Cited by 1 publication

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“…However, NPC and FC inverters employ a large number of clamping diodes and capacitors along with the increase of output levels, which inevitably raises the cost of topologies and the complexity of control strategies [5,6]. Cascaded H-bridge MLIs have problems in terms of the lack of boost capacity and the need for multiple isolated dc sources [7,8].…”

Section: Introductionmentioning

confidence: 99%

Novel extensible multilevel inverter based on switched-capacitor structure

Wang

et al. 2022

J. Power Electron.

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Multilevel inverters (MLIs) play an important role in research on renewable energy conversion. However, in traditional designs, the high voltage stress of switching devices and the large number of switches limit the wide application of the inverter. In order to ameliorate these problems, this paper proposes a switched-capacitor multilevel inverter (SCMLI). When compared with traditional MLIs, the proposed SCMLI utilizes a switchedcapacitor structure, where the capacitors can achieve voltage self-balancing without auxiliary methods. Thus, it permits changes of the positive and negative polarity of the output level without the need for an H-bridge. In addition, with the augment of the level in the expanded SCMLI structure, the maximum blocking voltage can be kept constant. To show the advantages of the proposed structure, an extensible single dc source five-level SCMLI prototype has been built. Through a comparative analysis with different topologies, this paper also presents the advantages of the proposed topology in terms of the output voltage gain, number of output levels, and voltage stress. Finally, the correctness and feasibility of the proposed inverter are validated by extensive experiments.

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Section: Introductionmentioning

confidence: 99%

Novel extensible multilevel inverter based on switched-capacitor structure

Wang

et al. 2022

J. Power Electron.

View full text Add to dashboard Cite

show abstract

Soft-switching modulation algorithm-based reconfiguration of cascaded H-bridge inverters under DC source failures

Cited by 1 publication

References 30 publications

Novel extensible multilevel inverter based on switched-capacitor structure

Novel extensible multilevel inverter based on switched-capacitor structure

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