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A Five-Level Common-Ground-T-Type Inverter for Solar Photovoltaic Applications
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Publication Year
2020-10-18
Journal
IECON Proceedings (Industrial Electronics Conference)
Publisher
IEEE Computer Society
Citation
IECON Proceedings (Industrial Electronics Conference), Vol.2020-October, pp.1160-1164
Keyword
5-levelcommon-groundsolar PVT-type invertervoltage boosting
Mesh Keyword
BOOST converterBoost inductorsCommon mode voltageContinuous inputSingle dc sourceSingle stage topologySolar photovoltaicsTopological structure
All Science Classification Codes (ASJC)
Control and Systems EngineeringElectrical and Electronic Engineering
Abstract
In this paper, a novel 5-level inverter with common ac and dc ground is proposed for solar photovoltaic (PV) applications. The newly established common-ground-T-type (CGT-type) inverter is a single-stage topology restructured from the combination of a classical T-type inverter and a front-end three-level boost converter. Its distinctive topological structure can effectively eliminate the common mode voltage issue, prevent leakage currents, and ensure a continuous input current in PV systems. More importantly, it requires only two capacitors to realize an ac voltage which can be significantly boosted from a single dc source. A pulse width modulation (PWM) scheme is also established to undertake the following tasks simultaneously: charging of the boost inductor with a constant duty-cycle, and switching of two capacitors for 5-level ac voltage generation. The operation and feasibility of the proposed CGT-type inverter is analyzed and validated through simulation results.
Language
eng
URI
https://aurora.ajou.ac.kr/handle/2018.oak/36598
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85097789641&origin=inward
DOI
https://doi.org/10.1109/iecon43393.2020.9255097
Type
Conference
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Lee, Kyo-Beum이교범
Department of Electrical and Computer Engineering
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