Semi-Г Type Single Phase Differential Boost Inverter With High Voltage Gain

Gautham, T N; Reddivari, Reddiprasad; Jena, Debashisha

doi:10.1109/tcsii.2022.3224662

Cited by 1 publication

(1 citation statement)

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“…When dealing with photovoltaic (PV) systems, the DC/AC converters used can be single-stage [3,4], in which the PV array is connected directly to the inverter's DC-link, or double-stage [5][6][7], in which there is a DC/DC stage voltage adjustment between the PV array and the inverter's DC-link. Although single-stage topologies are more efficient, as they have one less conversion stage, the PV array output voltage must be equal to the inverter DC-link voltage, which implies many PV panels in series and partial shading problems [8], in addition to the impossibility of using them at low powers.…”

Section: Introductionmentioning

confidence: 99%

Novel Integrated Zeta Inverter for Standalone Applications

Dionizio,

Pelz,

Sampaio

et al. 2024

Energies

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In recent years, distributed generation systems based on renewable energy sources have gained increasing prominence. Thus, the DC/AC converters based on power electronics devices have become increasingly important. In this context, this article presents an integrated Zeta inverter for low-power conditions, which operates in continuous conduction mode (CCM), achieving efficiency greater than 95%. The proposed topology is composed of four power switches, two operating at high frequency and two operating at low frequency, i.e., at the output frequency. Compared with the topologies in the literature, these configurations make it a competitive solution from the point of view of efficiency, number of elements, and, consequently, implementation cost. The proposed converter operates as a sinusoidal voltage source for local loads and is supplied by a DC source, such as batteries or a photovoltaic array. A multi-resonant voltage controller was used to guarantee the sinusoidal voltage provided to the non-linear load while dealing with the complex dynamics of the Zeta converter in the CCM. Experimental results from a 324 W prototype show the converter’s implementation feasibility and the high efficiency of the DC/AC conversion.

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