کنفرانس بین المللی ماشین و محرکه های الکتریکی

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صفحه اصلی / icemd2024

Transformless Single-Switch Buck-Boost DC-DC Converter with Inverted Output Voltage

نویسندگان :

Ali Sarikhani¹ Hossein Torkaman² Milad Babalou³

1- Faculty of Electrical Engineering Shahid Beheshti University Tehran, Iran 2- Faculty of Electrical Engineering Shahid Beheshti University Tehran, Iran 3- Faculty of Electrical Engineering Shahid Beheshti University Tehran, Iran

کلمات کلیدی :

Fuel cells،small signal modeling،single-switch،negative output،wide conversion ratio

چکیده :

This study introduces an innovative transformerless buck-boost converter capable of generating a negative output voltage. The design features a straightforward structure and offers an extensive range of conversion ratios. A high step-up voltage gain can be attained with a moderate duty cycle and utilizes only a single switch, making its control relatively simple. This paper delves into the operational principles, conducts a thorough steady-state analysis, and explores the proposed converter's small-signal modeling specifically within continuous conduction mode (CCM). A comparison study is provided between the proposed converter and various existing buck-boost converters. Additionally, variations of the proposed converter are introduced. To validate the theoretical analysis, simulations were conducted using PLECS software, and a laboratory prototype was developed.