LAPSE:2023.20172
Published Article
LAPSE:2023.20172
Common DC-Link Capacitor Harmonic Current Minimization for Cascaded Converters by Optimized Phase-Shift Modulation
March 17, 2023
Abstract
This paper investigates the influence of a constant carrier phase shift on the DC-link capacitor harmonic current of cascaded converters used in fuel-cell and mild-hybrid electric vehicles. In these applications, a DC-DC converter can be adopted between the battery and the motor drive inverter in a cascaded structure, where the two converters share the same DC-link. Since the DC-link capacitor of such a system represents a critical component, the optimization of the converter operation to limit the current stress and extend the lifetime of the capacitor is an primary objective. This paper proposes the use of a carrier phase shift between the modulations of the two converters in order to minimize the harmonic current of the DC-link capacitor. By harmonic analysis, an optimal carrier phase shift can be derived depending on the converter configuration. Analytical results are presented and validated by hardware-in-the-loop experiments. The findings show that the pulse width modulation carrier phase shift between the interleaved boost converter and the voltage source motor drive inverter has a significant influence on the DC-link capacitor current and thus on its lifetime. A case study with two-cell and three-cell interleaved boost converters shows a possible DC-link capacitor lifetime extension of up to 390%.
This paper investigates the influence of a constant carrier phase shift on the DC-link capacitor harmonic current of cascaded converters used in fuel-cell and mild-hybrid electric vehicles. In these applications, a DC-DC converter can be adopted between the battery and the motor drive inverter in a cascaded structure, where the two converters share the same DC-link. Since the DC-link capacitor of such a system represents a critical component, the optimization of the converter operation to limit the current stress and extend the lifetime of the capacitor is an primary objective. This paper proposes the use of a carrier phase shift between the modulations of the two converters in order to minimize the harmonic current of the DC-link capacitor. By harmonic analysis, an optimal carrier phase shift can be derived depending on the converter configuration. Analytical results are presented and validated by hardware-in-the-loop experiments. The findings show that the pulse width modulation carrier phase shift between the interleaved boost converter and the voltage source motor drive inverter has a significant influence on the DC-link capacitor current and thus on its lifetime. A case study with two-cell and three-cell interleaved boost converters shows a possible DC-link capacitor lifetime extension of up to 390%.
Record ID
Keywords
capacitor harmonic current, DC-link capacitor, harmonic minimization, interleaved boost converter, phase-shift modulation
Subject
Suggested Citation
Zhou X, Choy WJ, Alcaide AM, Wang S, Guenter S, Leon JI, Monopoli VG, Franquelo LG, Liserre M, Galea M, Gerada C, Buticchi G. Common DC-Link Capacitor Harmonic Current Minimization for Cascaded Converters by Optimized Phase-Shift Modulation. (2023). LAPSE:2023.20172
Author Affiliations
Zhou X: Key Laboratory of More Electric Aircraft Technology of Zhejiang Province, Department of Electrical and Electronic Engineering, University of Nottingham Ningbo China, Ningbo 315104, China [ORCID]
Choy WJ: Power Electronics, Machines and Control Group, University of Nottingham, Nottingham NG7 2RD, UK
Alcaide AM: Electronic Engineering Department, Universidad de Sevilla, 41004 Seville, Spain [ORCID]
Wang S: Key Laboratory of More Electric Aircraft Technology of Zhejiang Province, Department of Electrical and Electronic Engineering, University of Nottingham Ningbo China, Ningbo 315104, China
Guenter S: Key Laboratory of More Electric Aircraft Technology of Zhejiang Province, Department of Electrical and Electronic Engineering, University of Nottingham Ningbo China, Ningbo 315104, China [ORCID]
Leon JI: Electronic Engineering Department, Universidad de Sevilla, 41004 Seville, Spain; Department of Control Science and Engineering, Harbin Institute of Technology, Harbin 150001, China [ORCID]
Monopoli VG: Department of Electrical and Information Engineering, Politecnico di Bari, 70126 Bari, Italy [ORCID]
Franquelo LG: Electronic Engineering Department, Universidad de Sevilla, 41004 Seville, Spain; Department of Control Science and Engineering, Harbin Institute of Technology, Harbin 150001, China [ORCID]
Liserre M: Power Electronics Department, Christian-Albrechts Universität zu Kiel, 24118 Kiel, Germany [ORCID]
Galea M: Department of Industrial Electrical Power Conversion, University of Malta, MSD 2080 Msida, Malta [ORCID]
Gerada C: Power Electronics, Machines and Control Group, University of Nottingham, Nottingham NG7 2RD, UK [ORCID]
Buticchi G: Key Laboratory of More Electric Aircraft Technology of Zhejiang Province, Department of Electrical and Electronic Engineering, University of Nottingham Ningbo China, Ningbo 315104, China [ORCID]
Choy WJ: Power Electronics, Machines and Control Group, University of Nottingham, Nottingham NG7 2RD, UK
Alcaide AM: Electronic Engineering Department, Universidad de Sevilla, 41004 Seville, Spain [ORCID]
Wang S: Key Laboratory of More Electric Aircraft Technology of Zhejiang Province, Department of Electrical and Electronic Engineering, University of Nottingham Ningbo China, Ningbo 315104, China
Guenter S: Key Laboratory of More Electric Aircraft Technology of Zhejiang Province, Department of Electrical and Electronic Engineering, University of Nottingham Ningbo China, Ningbo 315104, China [ORCID]
Leon JI: Electronic Engineering Department, Universidad de Sevilla, 41004 Seville, Spain; Department of Control Science and Engineering, Harbin Institute of Technology, Harbin 150001, China [ORCID]
Monopoli VG: Department of Electrical and Information Engineering, Politecnico di Bari, 70126 Bari, Italy [ORCID]
Franquelo LG: Electronic Engineering Department, Universidad de Sevilla, 41004 Seville, Spain; Department of Control Science and Engineering, Harbin Institute of Technology, Harbin 150001, China [ORCID]
Liserre M: Power Electronics Department, Christian-Albrechts Universität zu Kiel, 24118 Kiel, Germany [ORCID]
Galea M: Department of Industrial Electrical Power Conversion, University of Malta, MSD 2080 Msida, Malta [ORCID]
Gerada C: Power Electronics, Machines and Control Group, University of Nottingham, Nottingham NG7 2RD, UK [ORCID]
Buticchi G: Key Laboratory of More Electric Aircraft Technology of Zhejiang Province, Department of Electrical and Electronic Engineering, University of Nottingham Ningbo China, Ningbo 315104, China [ORCID]
Journal Name
Energies
Volume
16
Issue
5
First Page
2098
Year
2023
Publication Date
2023-02-21
ISSN
1996-1073
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PII: en16052098, Publication Type: Journal Article
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LAPSE:2023.20172
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https://doi.org/10.3390/en16052098
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