DC Component Minimization of Transformerless LCL-Type Grid-Connected Inverter with Virtual Capacitors

Fang, Wenting; Wu, Duidi; Huang, Lijun; Liu, Bo; Chen, Yong

doi:10.23919/chicc.2019.8865205

Cited by 2 publications

(1 citation statement)

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“…The VDE 0126-1-1 standard is the only one that imposes a disconnection time from the grid in the order of 200 ms if a direct current greater than 1A is injected into the grid [35]- [37]. This standard also requires the disconnection of the conversion system if a leakage current occurs, as shown in Table 3 [38]. Considering the technical specifications of photovoltaic systems, several inverter topologies that more closely meet these specifications have been studied and are presented within this paper that mainly focuses on, a) inverters with galvanic isolation, and b) inverters without galvanic isolation.…”

Section: Inverter Specificationsmentioning

confidence: 99%

Review of DC-AC converters for photovoltaic conversion chains

Bouzguenda

Selmi

2021

IJPEDS

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<span lang="EN-US">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.</span>

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Section: Inverter Specificationsmentioning

confidence: 99%