Interleaved Multistage Step-Up Topologies with Voltage Multiplier Cells

Ahmad Alzahrani, Pourya Shamsi and Mehdi Ferdowsi
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Ahmad Alzahrani: Electrical Engineering Department, Najran University, Najran 66446, Saudi Arabia
Pourya Shamsi: Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO 65401, USA
Mehdi Ferdowsi: Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO 65401, USA

Energies, 2020, vol. 13, issue 22, 1-18

Abstract: This paper proposes a family of high-voltage-gain step-up dc-dc converters for photovoltaic integration application. The proposed converters are capable of converting the low voltage from input sources to a dc bus. The proposed family is constructed of interleaved single-switch multistage boost converters and voltage multiplier cells (VMC). The proposed converters feature low voltage stress across the components, equal current sharing among all phases, and a smooth input current. Moreover, the proposed family of converters has a modular structure in both the VMC and the boost stage. That is, the VMC can have N number of cells, and the boost stage can have k number of stages. The k can be different in each phase, allowing the designers to integrate two independent renewable energy sources with different output voltages. An example converter was explained, analyzed, and simulated. An 80 W hardware prototype was implemented to confirm the converter’s operation and validate the analysis.

Keywords: DC-DC; interleaving; high-voltage-gain; multistage; PV; voltage multiplier cells (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: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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