Cascaded Interleaved DC-DC Converter for a Bidirectional Electric Vehicle Charging Station

Author(s)

Leal, Wagner Coelho ; Godinho, Marcelo Oliveira ; Bastos, Renan Fernandes ; de Aguiar, Cassius Rossi ; Fuzato, Guilherme H. F. ; Machado, Ricardo Quadros

• Document type: Journal article
• Source: IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS; v. 71, n. 4, p. 10-pg., 2024-04-01.

Abstract

The dc-dc bidirectional step-up interleaved converter coupled by a central capacitor in a cascaded topology is used as a bidirectional electric vehicle charging station for charging and discharging the battery of an electric vehicle. In this article, a unified (coupled) model is proposed combining all switching intervals in a single model, allowing the accurate analysis and a better design for the controllers. In addition, this solution enables not only stage 1 to regulate the dc-link voltage on the terminals of stage 2 but also to use a classical proportional-integral controller or an adaptive state-of-charge-sharing function as a control structure. Finally, stability analysis, simulations, and experimental results are accomplished to evaluate the effectiveness of the proposed approach. (AU)

• FAPESP's process: 20/05865-3 - Equalization of energy storage devices for the management and optimization of DC microgrids that use alternative sources as main source
• Grantee: Thales Augusto Fagundes
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 13/20721-4 - Sistem for interconection of distributed generators to the grid: sintesis of micro grids
• Grantee: Ricardo Quadros Machado
• Support Opportunities: Regular Research Grants