An Interleaved High Step-Up DC-DC Converter with Built-In Transformer-Based Voltage Multiplier for DC Microgrid Applications
This paper proposes a high step-up DC-DC converter with a built-in transformer (BIT)-based voltage multiplier (VM) that is suitable for integrating low-voltage renewable energy sources into a DC microgrid. A three-winding BIT is combined with the switched-capacitor (SC) cells to extend the voltage gain and reduce the voltage stress on the switches. The current-falling rates of the diodes are controlled by the leakage inductances of the BIT, alleviating the reverse-recovery problem of the diodes. The operating modes and steady-state analysis are presented. Additionally, the validity of the proposed converter is confirmed by the simulation and experimental results of a 400 W converter with an input voltage of 20 V and output voltage of 400 V. Moreover, a comparison study is presented to verify the superiority of the proposed converter over the closest existing topologies in the literature.
R. Rahimi et al., "An Interleaved High Step-Up DC-DC Converter with Built-In Transformer-Based Voltage Multiplier for DC Microgrid Applications," Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, pp. 86 - 92, Institute of Electrical and Electronics Engineers (IEEE), Jan 2022.
The definitive version is available at https://doi.org/10.1109/APEC43599.2022.9773671
Electrical and Computer Engineering
Keywords and Phrases
DC Microgrid; Fuel Cell (FC); High-Voltage Gain; Interleaved High Step-Up DC-DC Converter; Photovoltaic (PV); Renewable Energy; Switched-Capacitor (SC) Cell; Voltage Multiplier (VM)
Article - Conference proceedings
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01 Jan 2022