Design and Analysis of a New Bidirectional DC-DC Converter with a High Voltage Conversion Ratio and Low Voltage Stress for Energy Applications

In this paper, a new non-isolated bidirectional DC-DC topology is proposed for new energy storage systems and DC micro-grid systems. The proposed topology is composed of five power switches, four capacitors, and two inductors. It not only has a higher voltage conversion ratio in step-up mode and a l...

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Bibliographic Details
Published in2020 12th IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC) pp. 1 - 6
Main Authors He, Muhan, Liu, Ye, Liu, Hao, Gu, Donghao
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2020
Subjects
high voltage conversion ratio
Inductors
Low voltage
low voltage stress
Prototypes
Reliability theory
Renewable energy sources
Simple structure
Steady-state
Topology
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Summary:In this paper, a new non-isolated bidirectional DC-DC topology is proposed for new energy storage systems and DC micro-grid systems. The proposed topology is composed of five power switches, four capacitors, and two inductors. It not only has a higher voltage conversion ratio in step-up mode and a lower voltage conversion ratio in step-down mode but also lower voltage stress on switches compared with other similar converters. The proposed converter has a simple structure, which makes the control strategy to be easy. The steady-state analysis and theoretical derivation are presented in detail. Finally, a prototype is built in MATLAB/Simulink to verify the reliability of the analysis and prepares for further experimental optimization.
DOI:10.1109/APPEEC48164.2020.9220534