Akademik Veri Yönetim Sistemi
ENGINEERING SCIENCE AND TECHNOLOGY, AN INTERNATIONAL JOURNAL, cilt.72, ss.1-11, 2025 (SCI-Expanded, Scopus)
The increasing adoption of grid-connected photovoltaic systems necessitates highly efficient and cost-effective inverter solutions. Transformerless inverters offer significant advantages in this regard, including enhanced efficiency, reduced cost, and compact size. However, their widespread deployment faces critical challenges, particularly concerning the management of leakage current and the growing demand for reactive power injection capabilities to support grid stability. This study investigates the performance of a single-phase transformerless inverter topology under various modulation strategies to address these challenges. We evaluate the inverter’s ability to inject both active and reactive power, analyzing key performance indicators such as efficiency, total harmonic distortion, common mode voltage, and leakage current. The research explores the impact of different modulation techniques, including both conventional and novel approaches, as well as various signal and carrier wave configurations. Our findings aim to provide crucial insights into optimizing inverter design and operation for grid-connected applications, contributing to the development of more reliable and efficient renewable energy systems. This work is particularly motivated by the need to mitigate leakage current issues and enhance reactive power support in these essential power conversion devices, thereby facilitating their broader integration into modern electrical grids.