International Journal of Power Electronics and Drive Systems (IJPEDS) Vol. 13, No. 3, September 2022, pp. 1599~1604 ISSN: 2088-8694, DOI: 10.11591/ijpeds.v13.i3.pp1599-1604  1599 Journal homepage: http://ijpeds.iaescore.com High step-up DC-DC converter with switched capacitor-coupled inductor and voltage multiplier module Subbulakshmy Ramamurthi, Palanisamy Ramasamy Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India Article Info ABSTRACT Article history: Received Feb 2, 2022 Revised May 24, 2022 Accepted Jun 11, 2022 A high step-up dc-dc converter based on a switched capacitor-coupled inductor (SC-CL) with voltage multiplier cells is proposed. It is composed of a SC-CL and a voltage multiplier module stacked on the load side. SC-CL produces the maximum output voltage with maximum voltage gain. These features make the projected converter suitable for renewable energy applications such as solar photovoltaic (PV). A low turn ratio of the coupled inductor is used for realizing the higher gain. It consists of a voltage boost unit SC-CL and a voltage multiplier module. In a DC micro-grid, PV energy is one of the utmost significant sources of power. Since the PV source voltage is very low, a very high voltage gain converter is required for a DC microgrid. Here, a step-up DC-DC converter topology with a very high voltage gain characteristic is proposed. The projected converter was simulated by MATLAB/Simulink to convert 30 V to 380 V. Keywords: Coupled inductor DC-DC converter Switched capacitor Voltage gain Voltage multiplier module This is an open access article under the CC BY-SA license. Corresponding Author: Subbulakshmy Ramamurthi Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology Kattankulathur, Tamil Nadu, India Email: rsubbulakshmy@gmail.com 1. INTRODUCTION In recent years, there has been a considerable growth in green energy demand as well as awareness about green energy technology. This motivates researchers to investigate distributed generation systems (DGs) that generate energy from renewable sources [1]. Photovoltaic (PV) panels, fuel cells, and other renewable energy sources provide DC power [2]. DC power is also provided by energy storage devices like lithium-ion batteries and supercapacitors. As an effect, DC micro-grids are now applied in DGs to provide ideal regulation of power flow from source side to load side as well as high-quality power to consumers [3], [4]. As an example, lighting and 'gadgets' are vital considerations. Research conducted by the International Energy Agency suggests that gadgets, such as computers and consumer electronics, consume about 15% of domestic energy usage. Lights are thought to consume nearly 20% of worldwide electricity use, while lighting comprises roughly 20% of worldwide electricity usage. LEDs, which run on DC power, are becoming a popular choice for high-efficiency lighting. Similarly, because most gadgets run on DC power, these two industries together account for a considerable and growing portion of worldwide electricity consumption by DC devices [5]. However, these are currently powered by AC mains through a slew of separate transformers. High gain voltage converters are advantageous in PV systems. For applications such as uninterruptible power supply (UPS) and compact PV inverters, the low input voltage from a PV source must be stepped up [6]-[8]. As a result, existing topologies will need to be altered to