Interleaved High Step-Up DC-DC Converter Based on Voltage Multiplier Cell and Voltage-Stacking Techniques for Renewable Energy Applications

Shin-Ju Chen, Sung-Pei Yang, Chao-Ming Huang, Huann-Ming Chou and Meng-Jie Shen
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Shin-Ju Chen: Department of Electrical Engineering, Kun Shan University, Tainan 710, Taiwan
Sung-Pei Yang: Green Energy Technology Research Center, Kun Shan University, Tainan 710, Taiwan
Chao-Ming Huang: Department of Electrical Engineering, Kun Shan University, Tainan 710, Taiwan
Huann-Ming Chou: Green Energy Technology Research Center, Kun Shan University, Tainan 710, Taiwan
Meng-Jie Shen: Department of Electrical Engineering, Kun Shan University, Tainan 710, Taiwan

Energies, 2018, vol. 11, issue 7, 1-17

Abstract: A novel interleaved high step-up DC-DC converter based on voltage multiplier cell and voltage-stacking techniques is proposed for the power conversion in renewable energy power systems. The circuit configuration incorporates an input-parallel output-series boost converter with coupled inductors, clamp circuits and a voltage multiplier cell stacking on the output side to extend the voltage gain. The converter achieves high voltage conversion ratio without working at extreme large duty ratio. The voltage stresses on the power switches are significantly lower than the output voltage. As a result, the low-voltage-rated metal-oxide-semiconductor field-effect transistors (MOSFETs) can be employed to reduce the conduction losses and higher conversion efficiency can be expected. The interleaved operation reduces the input current ripple. The leakage inductances of the coupled inductors act on mitigating the diode reverse recovery problem. The operating principle, steady-state analysis and design guidelines of the proposed converter are presented in detail. Finally, a 1-kW prototype with 28-V input and 380-V output voltages was implemented and tested. The experimental results are presented to validate the performance of the proposed converter.

Keywords: high step-up DC-DC converter; interleaved operation; coupled inductor; voltage multiplier cell (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: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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