Non‑isolated buck based three port DC–DC converter for medium power standalone photovoltaic applications

Satabdi Bhattacharaya; Susovon Samanta

Non‑isolated buck based three port DC–DC converter for medium power standalone photovoltaic applications

Satabdi Bhattacharaya

Susovon Samanta

Vol. 23, No. 10, pp. 1449-1460, Oct. 2023

10.1007/s43236-023-00640-0

Abstract

The design and development of a non-isolated buck-based three-port dc–dc converter for medium-power standalone PV systems are presented in this paper. The topology is obtained from a parallel connection of conventional buck and boost converters. An attractive feature of this converter is the implementation of a buck topology at the PV side, which ensures cost-effective PV panel wiring, reduced converter development cost, and better efficiency of the PV system during low irradiation periods when compared to its boost counterpart. The proposed converter includes three operating modes based on load power requirements and PV power generation. An autonomous mode transition algorithm is proposed for seamless transitions between various operating modes. The design methodology, losses, and operation of the converter are discussed in this paper. A low-cost and efficient 2 kW laboratory prototype model of the proposed converter has been developed. Experimental validations are provided to showcase the effectiveness and viability of the proposed converter under various operating conditions.

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Cite this article

[IEEE Style]

S. Bhattacharaya and S. Samanta, "Non‑isolated buck based three port DC–DC converter for medium power standalone photovoltaic applications," Journal of Power Electronics, vol. 23, no. 10, pp. 1449-1460, 2023. DOI: 10.1007/s43236-023-00640-0.

[ACM Style]

Satabdi Bhattacharaya and Susovon Samanta. 2023. Non‑isolated buck based three port DC–DC converter for medium power standalone photovoltaic applications. Journal of Power Electronics, 23, 10, (2023), 1449-1460. DOI: 10.1007/s43236-023-00640-0.