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Improved Quadratic Boost Converter with Reduced Current Stress on Input Inductor for Sustainable Energy Source Applications

Naga Kota Reddy Chegireddy *, Sai Babu Choppavarapu **

*-** Department of Electrical and Electronics Engineering, Jawaharlal Nehru Technological University Kakinada, Kakinada, Andhra Pradesh, India.

Periodicity:April - June'2021
DOI : https://doi.org/10.26634/jee.14.4.18396

Abstract

Utilization of sustainable energy sources is increasing because they are non-toxic and environment friendly. DC-DC step-up converters with high voltage gain are required for connecting sustainable energy sources to loads. In high voltage gain DCDC step up converters, single switch converters are gaining more attention. When operating at a high duty cycle, in singleswitch converters, both the switch and the input inductor undergo more current stress. This paper analyses an improved quadratic boost converter (QBC) with decreased current stress on both switch and input inductor. The design of various parameters, such as an inductor and a capacitor, is depicted. The equations have been evaluated in order to understand the current and voltage stress of the switch and diodes. These equations will aid in the selection of their ratings. With this improved quadratic boost converter, the switch and input inductor current stresses are reduced by 50% for a given duty cycle value and the input current ripples are also reduced by 67%, when compared with QBC. Finally, the theoretical studies are validated through simulation using MATLAB with the support of the PLECS Blockset.

Keywords

Improved Quadratic Boost Converter, Output Voltage, High Voltage Gain, Inductor Design, Capacitor Design, Input Current Ripple.

How to Cite this Article?

Chegireddy, N. K. R., and Choppavarapu, S. B. (2021). Improved Quadratic Boost Converter with Reduced Current Stress on Input Inductor for Sustainable Energy Source Applications. i-manager's Journal on Electrical Engineering, 14(4), 1-10. https://doi.org/10.26634/jee.14.4.18396

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