A high efficiency single-phase transformerless PV inverter topology with reduced leakage current

Author

John, Jomy ; Selvakumar, A. Immanuel

Author_Institution

Dept. of Electr. & Electron. Eng., Karunya Univ., Coimbatore, India

fYear

2013

fDate

6-8 Feb. 2013

Firstpage

255

Lastpage

259

Abstract

Driven by worldwide demand for renewable sources, there is a strong trend in photovoltaic scenario to use transformerless inverter topologies to obtain higher efficiencies and lower ground leakage current. This paper presents a new topology based on H-bridge with ac decoupling scheme consisting of diode bridge and a switch with clamping to the DC midpoint. The PV panel is modelled to obtain a voltage of 350V. Also the topology is simulated and compared with two other existing topologies. High efficiency and low leakage current are observed.

Keywords

invertors; solar cells; DC midpoint; H-bridge topology; PV panel; decoupling scheme; high efficiency single-phase transformerless PV inverter topology; lower ground leakage current; photovoltaic scenario; reduced leakage current; renewable sources; transformerless inverter topologies; voltage 350 V; Integrated circuit modeling; Inverters; Leakage currents; Photovoltaic systems; Switches; Topology; H-bridge inverter; Photovoltaic systems; common-mode voltage; leakage current;

fLanguage

English

Publisher

ieee

Conference_Titel

Power, Energy and Control (ICPEC), 2013 International Conference on

Conference_Location

Sri Rangalatchum Dindigul

Print_ISBN

978-1-4673-6027-2

Type

conf

DOI

10.1109/ICPEC.2013.6527661

Filename

6527661