A Novel DC-AC Inverter Topology to Eliminate  Leakage Current

Selmi, Tarek; Rezgui, Maher

doi:10.11591/ijpeds.v9.i4.pp1733-1744

Cited by 6 publications

(4 citation statements)

References 24 publications

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“…SMA has also developed a transformerless inverter topology as shown in Figure 23. The idea is to disconnect the photovoltaic source from the grid during the freewheeling time of the four main transistors of the full bridge topology [53]. In this case, the modulation used is hybrid.…”

Section: The H5 Invertermentioning

confidence: 99%

Review of DC-AC converters for photovoltaic conversion chains

Bouzguenda

Selmi

2021

IJPEDS

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This paper is devoted to the state of the art in photovoltaic (PV) conversion chains and their architectures. Two major characteristics are considered to classify these chains. These are the galvanic isolation and the number of stages; characteristics generally localized around the DC-AC converter (inverter) at the end of the PV conversion chain. Therefore, this paper deals with a comprehensive review of the different inverter topologies that can be integrated into PV conversion chains, distinguishing between the transformer based and the transformer-less conversion chains. The paper demonstrates that to this date, transformer-based inverters are very common and widely used, have a long record of accomplishment as a component of solar energy systems, in particular for residential applications because of their greater efficiency, smaller size, and lower costs. Nevertheless, transformer-less chains are touted with some problems and shortcomings. Moreover, solar energy storage devices, wireless charging systems in stations and along the highways require the re-examination of the existing solar PV conversion chains, their architectures and possibly new conversion chains suitable for all distributed generation including electric cars and storage devices.

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Section: The H5 Invertermentioning

confidence: 99%

Review of DC-AC converters for photovoltaic conversion chains

Bouzguenda

Selmi

2021

IJPEDS

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“…Non-isolated PWM converters reported in [17][18][19] highlight their benefits with respect to low driven and conduction loss. These benefits of non-isolated structure in PWM converters can be extended to resonant converters.…”

Section: Introductionmentioning

confidence: 99%

Non-isolated LLC resonant DC-DC converter with balanced rectifying current and stress

Dobi

Sahid

2020

IJEECS

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In isolated type LLC resonant converters, transformer leakage inductances can be merged with the resonant inductor to extend the ZVS capability of the switches apart from isolation and voltage scaling. However, the transformer presents a resonant imbalance in the secondary side leading to secondary current unbalance, an increase in RMS value of the secondary current and increase thermal stress. This paper proposed a half-bridge non-isolated LLC resonant converter with a balanced rectifying current and stress in the rectifier diodes. The proposed converter can achieve the most advantages of isolated LLC converters, such as ZVS and low MOSFET turn-off loss. By the non-isolation method, secondary current and, transformer loss is significantly reduced. In addition, rectifier diodes operate with zero current switching and balanced rectifying current and stress over the entire operating range. The proposed non-isolated structure is verified by the experimental result with a 60W LLC resonant converter.

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“…The output of the boost converter is connected in parallel with two legs and each leg is composed of two inverting switches connected in series. The output voltage of the inverter equal to when 2 and 5 are on and 3 and 4 are off and equal to − when 3 and 4 are on and 2 and 5 are off [21][22][23][24][25]. The swiches would be driven by simple square pulses.…”

Section: Introductionmentioning

confidence: 99%

A comparison of single phase standalone square waveform solar inverter topologies: half bridge and full bridge

Chemseddine¹,

Benabadji²,

Cheknane³

et al. 2020

IJECE

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In stand-alone photovoltaic installations the photovoltaic inverter allows transforming the DC power produced by the photovoltaic modules into an AC power. Depending on the shape of the AC output voltage generated by the inverter there exist three main types of stand-alone PV inverters: pure sine waveform inverters, modulated sine waveform inverters and square waveform inverters and each type of these inverters is also divided into different topologies. In this paper we will be interested and study the square waveform stand-alone inverter topologies which are the half bridge and the full-bridge inverter topologies.

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A Novel DC-AC Inverter Topology to Eliminate Leakage Current

Cited by 6 publications

References 24 publications

Review of DC-AC converters for photovoltaic conversion chains

Review of DC-AC converters for photovoltaic conversion chains

Non-isolated LLC resonant DC-DC converter with balanced rectifying current and stress

A comparison of single phase standalone square waveform solar inverter topologies: half bridge and full bridge

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