A Generic Control-Oriented Model Order Reduction Approach for High Step-Up DC/DC Converters Based on Voltage Multiplier

Binxin Zhu, Qingdian Zeng, Mahinda Vilathgamuwa, Yang Li and Yao Chen
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Binxin Zhu: College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, Hubei, China
Qingdian Zeng: College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, Hubei, China
Mahinda Vilathgamuwa: School of Electrical Engineering and Computer Science, Queensland University of Technology, Brisbane, QLD 4001, Australia
Yang Li: School of Automation, Wuhan University of Technology, Wuhan 430070, Hubei, China
Yao Chen: College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, Hubei, China

Energies, 2019, vol. 12, issue 10, 1-17

Abstract: The modeling and control system design of high step-up DC/DC converters based on voltage multipliers (VMs) are difficult, due to the various circuit topologies and the presence of large number of capacitors in VMs. This paper proposes a generic approach to reduce the model order of such converters by replacing the VM capacitors with voltage sources controlled by the output voltage of the converter. Theoretical analysis and simulation results show that the derived models can accurately represent the low frequency response of the converter which is valuable for obtaining a small-signal AC model for control system design. The detailed modeling and controller design process are demonstrated for the converter, and the obtained simulation results are verified experimentally on a 400 W prototype.

Keywords: DC/DC converter; reduced order model; high step-up converter; voltage multiplier (VM); control system design (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: 2019
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