A Novel Methodology for Single Phase Transformerless Inverter with Leakage Current Elimination for PV Systems Application
Injam Harshith1, Bathula Prudhvi Raj2, G. G Raja Sekhar3, T. Vijay Muni4
1Injam Harshith, Department of EEE, Koneru Lakshmauah Education Foundation, Vaddeswaram (A.P), India.
2Bathula Prudhvi Raj, Department of EEE, Koneru Lakshmauah Education Foundation, Vaddeswaram (A.P), India.
3G.G Raja Sekhar, Department of EEE, Koneru Lakshmauah Education Foundation, Vaddeswaram (A.P), India.
4T.Vijay Muni, Department of EEE, Koneru Lakshmauah Education Foundation, Vaddeswaram (A.P), India.
Manuscript received on 07 April 2019 | Revised Manuscript received on 20 April 2019 | Manuscript published on 30 April 2019 | PP: 1017-1021 | Volume-8 Issue-6, April 2019 | Retrieval Number: F5012048619/19©BEIESP
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Abstract: This paper proposes the transformerless photovoltaic (PV) inverter topology to reduce leakage current Multilevel inverters are a source of high power, often used in industrial applications and can use either sine or modified sine waves. The topology has the advantages of simple structure, low weight and provides higher efficiency. “However, the topology makes a path for leakage current to flow through parasitic capacitance formed between the photovoltaic (PV) module and the ground. A modulation technique has significant impact to reduce the leakage current without adding any extra component. This project proposes a hybrid multicarrier pulse width modulation (H-MCPWM) technique to reduce leakage current in a transformerless cascaded multilevel inverter for photovoltaic (PV) systems. The proposed hybrid multicarrier pulse width modulation technique ensures low leakage current in the transformerless photovoltaic seven level inverter systems with simplicity in implementation of the modulation technique using lesser number of carriers”.
Keyword: Cascaded H-bridge Multilevel Inverter, Hybrid Multicarrier Pulse Width Modulation (H-MCPWM), Leakage Current Reduction, Transformerless Photovoltaic (PV) System.
Scope of the Article: Microstrip Antenna Design and Application