2022
DOI: 10.1049/pel2.12440
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Topology review of doubly grounded transformer‐less single‐phase inverters

Abstract: Photovoltaic (PV) transformer-less single-phase inverters are widely used in the solar generation systems because of low cost, high power density, and high efficiency. However, there is a common mode leakage current in the transformer-less inverters, which may endanger personal safety. In order to reduce the common mode leakage current, extra semiconductors should be added into the PV inverters to decouple the dc side from the ac side. However, the common mode leakage current is affected by the environmental c… Show more

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Cited by 13 publications
(2 citation statements)
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“…The common‐ground (CG) concept is an interesting option to suppress of the leakage current. In this type of inverters, the negative point of the PV stack is shared with the grid neutral terminal, hence a constant common‐mode voltage results in null leakage current 12–16 . Several three‐level (3L) common‐ground inverters have been proposed in the literature 17–23 .…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…The common‐ground (CG) concept is an interesting option to suppress of the leakage current. In this type of inverters, the negative point of the PV stack is shared with the grid neutral terminal, hence a constant common‐mode voltage results in null leakage current 12–16 . Several three‐level (3L) common‐ground inverters have been proposed in the literature 17–23 .…”
Section: Introductionmentioning
confidence: 99%
“…In this type of inverters, the negative point of the PV stack is shared with the grid neutral terminal, hence a constant common-mode voltage results in null leakage current. [12][13][14][15][16] Several three-level (3L) common-ground inverters have been proposed in the literature. [17][18][19][20][21][22][23] They present less switch count at the cost of higher output voltage THD.…”
mentioning
confidence: 99%