Three-Phase Three-Port Microinverter with Integrated Battery

Felipe C. Brandão; Deyvid V. Souza; Bartolomeu F. dos Santos; Walbermark M. dos Santos

doi:10.20906/CBA2022/3443

Felipe C. Brandão Departamento de Engenharia Elétrica, Universidade Federal do Espírito Santo, ES
Deyvid V. Souza Departamento de Engenharia Elétrica, Universidade Federal do Espírito Santo, ES
Bartolomeu F. dos Santos Departamento de Engenharia Elétrica, Universidade Federal do Piauí, PI
Walbermark M. dos Santos Departamento de Engenharia Elétrica, Universidade Federal do Espírito Santo, ES

DOI: https://doi.org/10.20906/CBA2022/3443

Keywords: microinverter, PV application, DAB converter, deadbeat control, grid-connected, energy storage

Abstract

This paper presents a dual-stage three-port microinverter for three-phase grid- connected PV applications with a battery connected in the third port. The battery operates as a backup power source to compensate for the power mismatch between the source and the grid and to store excess power generated by the PV panel. A DAB converter is used to provide galvanic isolation and maximum power point tracking of the PV panel. To verify the theoretical analysis of the proposed topology, a 400 W three-port microinverter was designed and simulated.