• P-ISSN 0974-6846 E-ISSN 0974-5645

Indian Journal of Science and Technology


Indian Journal of Science and Technology

Year: 2024, Volume: 17, Issue: 4, Pages: 359-367

Original Article

Transformer-less DC-DC Converter with Low Duty Ratio Using a Single Switch and Quasi Impedance Based Network

Received Date:11 December 2023, Accepted Date:29 December 2023, Published Date:20 January 2024


Objective: Transformer-less DC-DC converter suitable for low-power applications, with a high voltage gain. With fewer elements, this suggested converter may generate a higher gain voltage at a lower duty ratio. Method: A transformer-less quasi-Z-source DC-DC converter with gain is introduced and examined. To boost the load voltage, the topology makes use of both the switched capacitor and active switched-inductor structure based on the quasi-Z-impedance network. The theoretical outcomes and the converter's functionality are verified by the simulation, which is run using the PLECS software program. Findings: The benefits of the conventional Z-source boost converter, including fewer voltage stress, constant input current, and common ground, are still present in the suggested converter. Additionally, at a relative duty ratio of 0.3, the gain is greatly increased by around 10 times. Each power switch's voltage stress is also significantly decreased. A detailed discussion is held on the steady-state operation. Novelty: A novel architecture with higher voltage gain at a decreased duty ratio is presented in this work. The network of inductors and capacitors typically used to raise the dc-dc converter's output voltage. The suggested topology raises the output voltage by using just one switch and switched capacitor and switched inductor network.

Keywords: Transformer­less converter, duty cycle, voltage gain, common ground, single switch


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© 2024 Haris et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)


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