A Buck-Boost Hybrid Converter with a Common Capacitor

Authors:
P. Srinivasan, K. Arulvendhan, S. Anirudh, Bubesh Asaithambi

Addresses:
Department of Electrical and Electronics Engineering, SRM Institute of Science and Technology, Ramapuram, Chennai, Tamil Nadu, India.

Abstract:

DC-DC converters are important electronic switching parts that are used in many different ways to control and change DC voltage levels. The hybrid buck-boost converter proposed in this study differs from conventional buck-boost converters in that it can change voltage in both directions while maintaining a constant modulation index. This makes it more flexible and useful in a wider range of situations. We provide in-depth details about the converter's circuit structure and its operational principles. We test the proposed converter with resistive loads and compare its performance to that of traditional buck-boost configurations to assess its effectiveness. The simulation results show that the proposed hybrid converter not only achieves higher and more variable voltage conversion ratios, but it also operates steadily without changing the switching duty cycle. One of the main benefits of the proposed design is that it can control voltage on both sides of the load. This makes it useful for systems that need to exchange energy dynamically, such as battery management systems, integrating renewable energy sources, and electric vehicles. On the other hand, regular converters typically only support one-way conversion, making them less flexible. Overall, the suggested hybrid buck-boost converter is a suitable choice for modern power electronic applications, as it offers improved performance, easier control, and the ability to adapt to various situations.

Keywords: DC-DC Converters; Hybrid Buck Boost Converter; PWM Controller; Common Capacitor; Voltage Conversion Ratios; Battery Management Systems; One-Way Conversion; Exchange Energy.

Received: 03/10/2024, Revised: 25/11/2024, Accepted: 27/12/2024, Published: 07/06/2025

DOI: 10.64091/ATIEL.2025.000124

AVE Trends in Intelligent Energy Letters, 2025 Vol. 1 No. 1 , Pages: 39-51

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