Zero Photovoltaic Leakage Current Boost Inverter Using Modified Symmetrical Switch Common Ground Topology with Lower Device Stress

Eltaib Abdeen D. Ibrahim, Mokhtar Aly and Mohamed Orabi ()
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Eltaib Abdeen D. Ibrahim: Electrical Engineering Department, High Institute for Engineering and Technology in Sohag, Sohag 1841047, Egypt
Mokhtar Aly: Centro de Transición Energética (CTE), Facultad de Ingeniería, Universidad San Sebastián, Bellavista 7, Santiago 8420524, Chile
Mohamed Orabi: Aswan Power Electronics Applications Research Center (APEARC), Aswan Faculty of Engineering, Aswan University, Aswan 81542, Egypt

Sustainability, 2026, vol. 18, issue 3, 1-20

Abstract: The transition to clean photovoltaic sustainable generation sources has motivated several developments in required power electronics interface systems. The conventional solution is based on two cascaded conversion stages, leading to reduced efficiency, inevitable leakage currents, and/or a high number of required components. Another solution is the use of integrated two-stage solutions suffering from asymmetrical switch structures, discontinuous input side currents, and/or complex modulation and control requirements. This paper presents a modified configuration with symmetrical six switches based on the common ground boost inverter solution. Furthermore, the proposed solution presents a continuous input side current and a simple modulation strategy. Moreover, the proposed CG topology offers a reduction of the current stress on the power switch by diverting the load current away from the power switch during the inductor charging. The operation, modulation, and control of the developed solution are presented in the paper, including comprehensive performance comparisons with boost inverter solutions in the literature. Simulation and experimental prototype-based results confirm the advantages and superiority of the proposed topology over existing topologies.

Keywords: sustainable energy systems; photovoltaic power conversion; energy efficiency; energy transition; zero leakage current; common-ground boost inverter; inverter topology; reduced device stress (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2026
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