High-Performance Power Electronic Battery Pack Based on a Back-to-Back Converter

Tomás P. Corrêa (), Thales A. C. Maia and Braz J. Cardoso Filho
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Tomás P. Corrêa: Graduate Program in Electrical Engineering, Universidade Federal de Minas Gerais, Av. Pres. Antônio Carlos, 6627, Belo Horizonte 31270-901, MG, Brazil
Thales A. C. Maia: Graduate Program in Electrical Engineering, Universidade Federal de Minas Gerais, Av. Pres. Antônio Carlos, 6627, Belo Horizonte 31270-901, MG, Brazil
Braz J. Cardoso Filho: Graduate Program in Electrical Engineering, Universidade Federal de Minas Gerais, Av. Pres. Antônio Carlos, 6627, Belo Horizonte 31270-901, MG, Brazil

Energies, 2022, vol. 16, issue 1, 1-17

Abstract: This work studies a full-power, module-integrated back-to-back converter for battery energy storage applications. The proposed solution optimizes bank usage across a wide range of individual battery capacities. The converter design and control are examined, as well as the use of a loss reduction method when operating under a partial load. The suggested architectural work allows the bank to have a regulated voltage output, simulating a passive bank, while controlling the charge and discharge of individual batteries to their maximum capacities. Those capabilities are also evaluated using linear programming optimization, in order the quantify the advantage. The suggested system is used in a typical use-case examined experimentally. The energy provided by an experimental lead acid bank rose 38 times after a few charge/discharge cycles.

Keywords: battery storage plants; DC–DC power conversion; equalizers (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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