شماره ركورد كنفرانس :
2727
عنوان مقاله :
Study of Leakage Current Phenomena in Hybrid 2/3-Level Three- Phase Transformerless Photovoltaic Grid-Connected Inverters
عنوان به زبان ديگر :
Study of Leakage Current Phenomena in Hybrid 2/3-Level Three- Phase Transformerless Photovoltaic Grid-Connected Inverters
پديدآورندگان :
Rahimi Ramin نويسنده University of Tehran - Department of Electrical and Computer Engineering , Moradi Gholam Reza نويسنده University of Tehran - Department of Electrical and Computer Engineering , Afshari Ehsan نويسنده University of Tehran - Department of Electrical and Computer Engineering , Farhangi Babak نويسنده University of Tehran - Department of Electrical and Computer Engineering , Farhangi Shahrokh نويسنده University of Tehran - Department of Electrical and Computer Engineering
كليدواژه :
Transformer-less photovoltaic (PV) system , Leakage Current , parasitic capacitor , sinusoidal pulse width , hybrid 2/3-level inverter , modulation (SPWM) strategy
عنوان كنفرانس :
اولين كنفرانس بين المللي دستاوردهاي نوين پژوهشي در مهندسي برق و كامپيوتر
چكيده لاتين :
In photovoltaic (PV) applications, it is possible to eliminate the transformer from the PV system in order to
improve the efficiency and reduce cost, losses, and size. The main issue arises when the transformer is removed. This issue is due to the presence of a parasitic capacitance between the metal frame of the panel and the PV cells. This stray capacitor causes the leakage current. This current increases current harmonics injected into the utility grid, the radiated and conducted
electromagnetic emissions, and losses. In this paper, application of the hybrid 2/3-level converter as grid-connected photovoltaic inverter is studied. Moreover, a novel modulation method is proposed for this topology that can be efficiently implemented to reduce leakage current. Through simulation case studies, the effectiveness of the proposed modulation method is validated; unlike traditional full-bridge inverters, leakage current of hybrid 2/3-level converter meet the requirements of transformerless PV inverters.
شماره مدرك كنفرانس :
4240260
