Highly-Reliable Switched-Boost Four-Leg Inverter with Leakage Current Suppression

In this paper, a new switched-boost four-leg inverter is proposed to suppress the leakage current and provide high reliability. The proposed inverter provides full shoot-through immunity by replacing the active switch in the impedance-source network to improve the reliability of the inverter system....

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Bibliographic Details
Published inIEEE access Vol. 12; p. 1
Main Authors Do, Duc-Tri, Truong, Ngoc-Anh, Nguyen, Minh-Khai, Duong, Truong-Duy
Format Journal Article
LanguageEnglish
Published Piscataway IEEE 01.01.2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Equivalent circuits
four-leg inverter
high reliability
Inverters
Leakage current
Leakage currents
Network reliability
Pulse width modulation
Reliability
Support vector machines
switched-boost
Switches
transformerless PV system
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Summary:In this paper, a new switched-boost four-leg inverter is proposed to suppress the leakage current and provide high reliability. The proposed inverter provides full shoot-through immunity by replacing the active switch in the impedance-source network to improve the reliability of the inverter system. The SVM control scheme without dead-time insertion is derived to achieve constant common-mode voltage. Hence, the leakage current of the proposed inverter is also effectively suppressed. The proposed inverter's operating principle, steady state, and SVM control scheme are discussed. Finally, simulation and experimental verifications of a 1.2-kVA laboratory-scale hardware are set up to perform the effectiveness of the proposed inverter.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2024.3463719