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2 publications found

Nonisolated DC–DC power converter synthesis using low-entropy equations

Thilina S. Ambagahawaththa, Dulika Nayanasiri, Ajith Pasqual, Yunwei Li

Journal IEEE Journal of Emerging and Selected Topics in Power Electronics , vol. 10(6) , pp. 6457-6469 · 2022 · Cited by 10

Electronic Devices and Semiconductor Systems

Abstract

There is a growing demand for novel nonisolated dc–dc power converters with the deployment of dc power distribution systems integrating renewable sources and energy storing elements. The load and source of these applications have different input and output voltage levels, and it is vital to avoid operating the interfacing power converters at extreme duty ratios. Therefore, engineers and researchers explore the power converter synthesizing techniques since the mid-1970s, fulfilling the above requirement besides the nonpulsating input and output current. Among them, the analytical synthesis method has gained popularity, although it gives rise to high-entropy equations. This article shows a simple yet powerful topology synthesis method based on the low-entropy equations that reveal the connection between the energy storing elements and switches. To this end, a set of design rules have been introduced in this …

A Design Methodology to Synthesize First Degree Single-Path Hybrid DC–DC Converters

Thilina S. Ambagahawaththa, Dulika Nayanasiri, Ajith Pasqual, Yunwei Li

Journal IEEE Transactions on Power Electronics , vol. 37(10) , pp. 12336-12345 · 2022 · Cited by 3

Electronic Devices and Semiconductor Systems

Abstract

The hybrid dc–dc converter family has desirable features to fulfil the performance matrix requirements of point-of-load converters. However, there are no well-established methods for synthesizing single and dual-path converters addressing design specifications. The existing connection matrix-based approaches are not helpful because they give rise to nonrealizable, redundant, and degenerative solutions. Therefore, a design-oriented and low-entropy equation-based single-path hybrid converter synthesis method is proposed in this article. To this end, general structures for the single- and multi-inductor converters have been proposed. They are based on the switched-capacitor cells. Therefore, a set of guidelines have been provided in this article to decompose a voltage gain polynomial for identifying the switched-capacitor cells. Moreover, a structured method to derive and approximate a converter gain polynomial …