International Journal of Power Electronics and Drive Systems (IJPEDS) Vol. 14, No. 2, June 2023, pp. 892~897 ISSN: 2088-8694, DOI: 10.11591/ijpeds.v14.i2.pp892-897  892 Journal homepage: http://ijpeds.iaescore.com An elevated gain DC-DC converter with active switched inductor for PV application Kalarathi Mahalingam, Gnanavadivel Jothimani Department of Electrical and Electronics Engineering, Mepco Schlenk Engineering College, Sivakasi, India Article Info ABSTRACT Article history: Received Oct 5, 2022 Revised Dec 22, 2022 Accepted Jan 5, 2023 Innovative power electronic converters have emerged because of renewable energy expansion in the past two decades. Direct current DC grids can operate independently or connected to power grids. A DC grid has distributed generation (DG) units, such as solar panels and, fuel cells. It is necessary to have a DC-DC converter in DC grids to raise output voltage. Boost converters have limited voltage gain, and their switching stress is often equal to their output voltage. This work proposes a converter which gives high gain and less stress when compared to other recent converters. At 0.8 duty ratio, this converter produces an elevated gain of 59. An experimental prototype is built for the proposed converter and the results are presented. Keywords: Active switched inductor Continuous conduction mode High gain converter PV application Voltage multiplier This is an open access article under the CC BY-SA license. Corresponding Author: Mahalingam Kalarathi Department of Electrical and Electronics Engineering, Mepco Schlenk Engineering College Sivakasi, Tamilnadu, 626005, India Email: rathigkl@mepcoeng.ac.in 1. INTRODUCTION The low output voltage from direct current DG source, necessitates the use of high gain boost converters to increase gain. Recently a wide variety high gain DC-DC converter have been published in literature which are mainly employed to increase the low voltage obtained from solar photovoltaic (PV) and fuel cell [1]−[11]. A “Two Tier converter” with voltage stress reduction is mentioned in [12]. The converter provides elevated gain of voltage at a low duty ratio. In addition, single control circuit is required as two switches operate concurrently. Converter in [13] is controlled by a switch with a low voltage stress in it. In the case of a continuous input current, a filter is not needed at the converter's input which makes this converter suitable for fuel cells. A converter that steps up low value of DC voltage to high value that uses quasi-Z-source network is suggested in [14]. A switched inductor, a passive switched inductor, a switched capacitor cell, and a non-isolated auxiliary switch are proposed as converter substructures in [15]. Rajabi et al. [16] propose a high gain non-isolated boost converter. The suggested topology features a high voltage gain and a low duty cycle ratio when compared to typical switched inductor or switched capacitor systems. A new configuration elevated gain DC-DC converter that improves the effectiveness of PV panels for powering water pumping structure is explained in [17]. A modified DC-DC converter that has a boost module and a Z-source module with a relatively high gain is proposed in [18]. Using four switches, a novel configuration of many input boost converters with fault tolerance is presented in [19]. There is a novel structure for non-isolated DC-DC converters with many inputs and different output voltage levels presented in [20]. A novel DC-DC converter with quadratic voltage gain is presented in this study. For this converter to achieve high gain, it requires only minimum switching components. In comparison to other modern topologies, this converter has a lower voltage stress [21]. We