Abstract
The market of PV systems is rapidly expanding during the last years and the transformerless DC/AC inverters are key components in this evolution. Despite its design and control simplicity, a transformerless full-bridge DC/AC inverter may exhibit a high leakage ground current, due to capacitive coupling between the solar panels and ground, which prohibits its employment in single-phase PV systems. Thus, multiple alternative transformerless PV inverter topologies have been developed in the past, which, however, comprise additional power devices and/or passive components. In this paper, a new modulation method is proposed for optimally controlling the power switches of transformerless single-phase full-bridge PV inverters, such that their leakage ground current is minimized. The design results demonstrate that by using the proposed technique, the leakage ground current of transformerless full-bridge inverters is reduced below the maximum limit imposed by the VDE 0126-1-1 standard, thus enabling their application in single-phase PV installations, instead of more complex PV inverter structures.
Originalsprog | Engelsk |
---|---|
Titel | Proceedings of the 2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe) |
Antal sider | 10 |
Forlag | IEEE Press |
Publikationsdato | sep. 2015 |
Sider | 1-10 |
DOI | |
Status | Udgivet - sep. 2015 |
Begivenhed | 17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015 - Centre International de Conférence Genève (CICG), 17 rue Varembé CH . 1211 Genève 20, Geneva, Schweiz Varighed: 8 sep. 2015 → 10 sep. 2015 |
Konference
Konference | 17th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2015 |
---|---|
Lokation | Centre International de Conférence Genève (CICG), 17 rue Varembé CH . 1211 Genève 20 |
Land/Område | Schweiz |
By | Geneva |
Periode | 08/09/2015 → 10/09/2015 |