A new high-efficiency single-phase transformerless PV inverter topology

Tamas Kerekes; Remus Teodorescu; Pedro Rodriguez; G. Vazquez; E. Aldabas

doi:10.1109/TIE.2009.2024092

A new high-efficiency single-phase transformerless PV inverter topology

Tamas Kerekes, Remus Teodorescu, Pedro Rodriguez, G. Vazquez, E. Aldabas

AAU Energy

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Abstract

There is a strong trend in the photovoltaic (PV) inverter technology to use transformerless topologies in order to acquire higher efficiencies combining with very low ground leakage current. In this paper a new topology, based on the H-Bridge with a new AC bypass circuit consisting in a diode rectifier and a switch with clamping to the DC midpoint is proposed. The topology is simulated and experimentally validated and a comparison with other existing topologies is performed. High conversion efficiency and low leakage current is demonstrated.

Original language	English
Journal	IEEE Transactions on Industrial Electronics
Volume	58
Issue number	1
Pages (from-to)	184-191
Number of pages	8
ISSN	0278-0046
DOIs	https://doi.org/10.1109/TIE.2009.2024092
Publication status	Published - 2011

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title = "A new high-efficiency single-phase transformerless PV inverter topology",

abstract = "There is a strong trend in the photovoltaic (PV) inverter technology to use transformerless topologies in order to acquire higher efficiencies combining with very low ground leakage current. In this paper a new topology, based on the H-Bridge with a new AC bypass circuit consisting in a diode rectifier and a switch with clamping to the DC midpoint is proposed. The topology is simulated and experimentally validated and a comparison with other existing topologies is performed. High conversion efficiency and low leakage current is demonstrated.",

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AU - Rodriguez, Pedro

AU - Vazquez, G.

AU - Aldabas, E.

PY - 2011

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AB - There is a strong trend in the photovoltaic (PV) inverter technology to use transformerless topologies in order to acquire higher efficiencies combining with very low ground leakage current. In this paper a new topology, based on the H-Bridge with a new AC bypass circuit consisting in a diode rectifier and a switch with clamping to the DC midpoint is proposed. The topology is simulated and experimentally validated and a comparison with other existing topologies is performed. High conversion efficiency and low leakage current is demonstrated.

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DO - 10.1109/TIE.2009.2024092

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A new high-efficiency single-phase transformerless PV inverter topology

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