Document Type : Research article
Authors
1 Department of Electrical Engineering, Faculty of Electrical and Computer Engineering, Hakim Sabzevari University, Sabzevar, Iran
2 School of Electrical-Electronic Engineering, University College Dublin, Ireland
Abstract
This paper discusses the application of the principle of duality to conventional voltage-based DC-DC converters, such as buck, boost, fly-back, cuk, sepic, and zeta topologies, in order to obtain their current-based DC-DC converters. The duality approach involves finding the dual of a circuit, which is a circuit equivalent to the original circuit but with certain parameters swapped. Therefore, this paper presents a comprehensive study on achieving the most commonly used topologies of DC-DC current converters by applying the duality approach to their DC-DC voltage converters. This approach serves as a solution for applications where a current source is available and there is a need for output current control. An application of these current converters is to power current-based loads, such as light-emitting diodes (LEDs), and to provide conversion for current sources, such as photovoltaics (PV). As an advantage, these converters do not require additional inductors at their input or output terminals. Additionally, the paper provides a detailed explanation of the principle of operation and mathematical analysis of the conversion ratio for the discussed current converters. The proposed current converters and their application as an interface between a PV and a high-power LED were simulated using MATLAB to verify the mathematical equations. Overall, this paper provides a useful study guideline for understanding the principle of duality and the application of DC-DC current converters for current-based loads and sources.
Highlights
- It is a useful study guideline for current sharing and applying the duality principle to the DC-DC converters.
- It responds to the need for output current control for some applications in which the current source is available.
- The dual of the conventional DC-DC voltage converters are discussed to meet these requirements.
- A practical case is studied in which the discussed DC-DC current converters work as an interface between a photovoltaic system and a high-power LED load.
Keywords
Main Subjects
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