{"id":5373,"date":"2026-05-03T12:34:18","date_gmt":"2026-05-03T04:34:18","guid":{"rendered":"\/jase\/?post_type=tkuisotope&p=5373"},"modified":"2026-06-26T18:06:37","modified_gmt":"2026-06-26T10:06:37","slug":"a-new-high-gain-ac-decoupled-transformerless-inverter-for-photovoltaic-applications","status":"publish","type":"tkuisotope","link":"\/jase\/?tkuisotope=a-new-high-gain-ac-decoupled-transformerless-inverter-for-photovoltaic-applications","title":{"rendered":"A New High Gain AC-Decoupled Transformerless Inverter for Photovoltaic Applications"},"content":{"rendered":"\n
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<\/i> 2022<\/a><\/p>\n<\/div>\n\n\n\n

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<\/i> Volume 25, Issue 6<\/a><\/p>\n<\/div>\n\n\n\n

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Sahaya A Ponrekha1,2<\/sup>, M.S.P. Subathra1<\/sup>, and C. Bharatiraja2<\/sup><\/i><\/a><\/p>\n\n\n\n

1<\/sup>Department of Electrical and Electronics Engineering, Karunya Institute of Technology and Sciences, Coimbatore, Tamilnadu, India, 641114 <\/p>\n\n\n\n

2<\/sup>Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Kattankulathur, Tamilnadu, India, 603203<\/p>\n<\/div>\n\n\n\n

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Received:\u00a0July 27, 2021
Accepted:\u00a0December 16, 2021
Publication Date:\u00a0May 03, 2026<\/p>\n<\/div>\n<\/div>\n\n\n\n

\"\u4e0a\u50b3\u5716\u7247\"\n\n\n

(a) Structure of proposed topology (b) Switching pulses<\/p>\n<\/div>\n<\/div>\n\n\n\n

<\/i> Copyright <\/strong>The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0)<\/a>, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.<\/p>\n\n\n\n

Download Citation:  BibTeX <\/a>| http:\/\/dx.doi.org\/10.6180\/jase.202212_25(6).0006<\/a>  <\/p>\n\n\n\n

Download PDF<\/a><\/p>\n\n\n\n

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Transformerless inverters are prominently used in the single-phase grid-connected system due to their reduced size, weight, and high efficiency. Common-mode leakage current is the main issue of transformerless inverters, which has to be mitigated. An AC-decoupled high gain inverter is proposed in the inverter capable of attaining the gain more than ten times. Hence, even if the PV voltage is less, the inverter can continue to supply the grid. Unlike the two-stage inverters, the proposed inverter doesn\u2019t require the DC-link capacitor, and it\u2019s charging diode between the boosting and inverter stages. The AC-decoupling method used in the inverter helps to reduce the leakage current within the German standard limit VDE0126-1-1. A detailed steady-state analysis of the inverter is presented. The proposed inverter is simulated in the MATLAB Simulink platform to validate its working principle. The comparative loss and thermal analysis of the semiconductor switches made of three different materials (Gallium Nitride, Silicon Carbide, and Silicon) are made in the PLECS platform. The comparative analysis proves that the proposed inverter with Gallium Nitride made switches offers higher efficiency and reliability.<\/p>\n\n\n\n

Keywords:\u00a0Transformerless inverter, Common-mode voltage, Common-mode leakage current, Loss analysis.<\/em><\/p>\n\n\n\n

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