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10.3390-en16093622 |
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|a 19961073 (ISSN)
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|a Grid-Tied Single-Phase Integrated Zeta Inverter for Photovoltaic Applications
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|b MDPI
|c 2023
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|z View Fulltext in Publisher
|u https://doi.org/10.3390/en16093622
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|a Recently, the development of integrated inverters for photovoltaic systems has been widely performed to reduce overall system size, costs, and losses. Thus, integrated inverters have emerged as a prominent solution for replacing two-stage power conversion composed of a step-up converter and a voltage source inverter. Thereby, this paper proposes an integrated inverter topology for single-phase grid-tied photovoltaic systems. The proposed power converter, called a Single-Phase Integrated Zeta Inverter (SP-IZI), can boost the input voltage and inject a sinusoidal and regulated current into the mains with low harmonic distortion. The SP-IZI is based on integrating modified DC-DC Zeta converters, designed and controlled to operate in a discontinuous conduction mode, and presents similarities with the Modified Zeta Inverter (MZI). In this way, this paper compares the main parameters of both topologies and provides a complete study of the SP-IZI, involving both quantitative and qualitative studies as well as a small signals analysis. The feasibility and functionality of the proposed SP-IZI inverter are presented and evaluated through experimental results, which demonstrate that the SP-IZI presents the following advantages compared to the MZI: (i) the voltage in coupling capacitors is 13% lower; (ii) voltage stresses in switches and diodes are 40% lower; and (iii) static gain is similar to the traditional Zeta converter. © 2023 by the authors.
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|a Boost converter
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|a DC/AC power conversion
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|a DC-AC power conversion
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|a Electric inverters
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|a integrated inverter
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|a Integrated inverter
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|a Integrated zeta inverte
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|a integrated zeta inverter
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|a Photovoltaic applications
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|a photovoltaic systems
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|a Photovoltaic systems
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|a Single phasis
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|a System costs
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|a System loss
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|a System size
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|a Topology
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|a zeta converter
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|a Zeta converter
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|a da Silva, S.A.O.
|e author
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|a Dionizio, A.A.
|e author
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|a Machado, S.D.J.M.
|e author
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|a Sampaio, L.P.
|e author
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|t Energies
|x 19961073 (ISSN)
|g 16 9
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