Bi-directional DC-DC Converter for Battery Energy Storage

doi:10.16182/j.issn1004731x.joss.201808049

Abstract

Abstract: A topology of non-isolated bi-directional DC-DC converter is proposed. The converter adopts the synchronous rectifier half bridge buck-boost circuit as the foundation using the voltage and current double closed-loop control method to achieve the function of the lithium batteries charging and discharging. The working principles of the DC-DC converter are analyzed under the charging mode, discharging mode and parallel supply mode. The simulation model for the converter circuit is established in Matlab/Simulink circumstance and the system experiment is built. The simulation and experiment verifies the feasibility and the reliability of the converter. The simulation results show that the efficiency of power conversion is over 95%.

Key words: bi-directional dc-dc converter, synchronous rectifier control, half bridge buck-boost, power transformation, efficiency

CLC Number:

TM461.3

Xia Kun, Hong Xinwei, Yuan Yin, Chen Anghui. Bi-directional DC-DC Converter for Battery Energy Storage[J]. Journal of System Simulation, 2018, 30(8): 3219-3228.

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