Stability Enhancement of DC Cascaded System Including CPLs by Using Nonlinear Inductor in Source-Interface DC-DC Converter

Hongjian Lin; Henry Shu-Hung Chung; Ruihua Shen

doi:10.1109/ECCE55643.2024.10861791

Stability Enhancement of DC Cascaded System Including CPLs by Using Nonlinear Inductor in Source-Interface DC-DC Converter

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

Abstract

This paper proposes an enhanced stability scheme for source-interface DC-DC converter in the cascaded systems with constant power loads (CPLs) by using magnetic powder core fabricated nonlinear inductor (NI). CPLs are known for their negative incremental impedance (NII) characteristics, which creates a mismatch between the source-interface DC-DC converter and load converter impedances, leading to system destabilization. To address this issue, this paper introduces the use of the NI in the source-interface DC-DC converter to enhance system stability. Initially, a canonical form of the system is established to access the control-to-output transfer function. Subsequently, stability criteria for the control-to-output characteristics of the system are established to derive the stable power range plane in which the crucial role of the NI is highlighted in enhancing stability. Eventually, the effectiveness of the proposed scheme is verified by the experimental results. © 2024 IEEE.

Original language	English
Title of host publication	2024 IEEE Energy Conversion Congress and Exposition (ECCE)
Publisher	IEEE
Pages	4768-4774
ISBN (Electronic)	979-8-3503-7606-7, 979-8-3503-7605-0
ISBN (Print)	979-8-3503-7607-4
DOIs	https://doi.org/10.1109/ECCE55643.2024.10861791
Publication status	Published - Oct 2024
Event	16th IEEE Energy Conversion Congress and Exposition (ECCE 2024) - Phoenix Convention Center, Phoenix, United States Duration: 20 Oct 2024 → 24 Oct 2024 https://www.ieee-ecce.org/2024/

Publication series

Name	IEEE Energy Conversion Congress and Exposition, ECCE - Proceedings
ISSN (Print)	2329-3721
ISSN (Electronic)	2329-3748

Conference

Conference	16th IEEE Energy Conversion Congress and Exposition (ECCE 2024)
Abbreviated title	ECCE2024
Place	United States
City	Phoenix
Period	20/10/24 → 24/10/24
Internet address	https://www.ieee-ecce.org/2024/

Funding

This work was supported by grants from the Research Grants Council of the Hong Kong Special Administration Region, China, through project # CityU 11219722 and project # CityU 11206620.

Research Keywords

Constant power load (CPL)
DC Cascaded system
negative incremental impedance (NII)
source-interferface DC-DC converter

RGC Funding Information

RGC-funded

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10.1109/ECCE55643.2024.10861791

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Cite this

Lin, H., Chung, H. S.-H., & Shen, R. (2024). Stability Enhancement of DC Cascaded System Including CPLs by Using Nonlinear Inductor in Source-Interface DC-DC Converter. In 2024 IEEE Energy Conversion Congress and Exposition (ECCE) (pp. 4768-4774). (IEEE Energy Conversion Congress and Exposition, ECCE - Proceedings). IEEE. https://doi.org/10.1109/ECCE55643.2024.10861791

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title = "Stability Enhancement of DC Cascaded System Including CPLs by Using Nonlinear Inductor in Source-Interface DC-DC Converter",

abstract = "This paper proposes an enhanced stability scheme for source-interface DC-DC converter in the cascaded systems with constant power loads (CPLs) by using magnetic powder core fabricated nonlinear inductor (NI). CPLs are known for their negative incremental impedance (NII) characteristics, which creates a mismatch between the source-interface DC-DC converter and load converter impedances, leading to system destabilization. To address this issue, this paper introduces the use of the NI in the source-interface DC-DC converter to enhance system stability. Initially, a canonical form of the system is established to access the control-to-output transfer function. Subsequently, stability criteria for the control-to-output characteristics of the system are established to derive the stable power range plane in which the crucial role of the NI is highlighted in enhancing stability. Eventually, the effectiveness of the proposed scheme is verified by the experimental results. {\textcopyright} 2024 IEEE.",

keywords = "Constant power load (CPL), DC Cascaded system, negative incremental impedance (NII), source-interferface DC-DC converter",

author = "Hongjian Lin and Chung, \{Henry Shu-Hung\} and Ruihua Shen",

year = "2024",

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doi = "10.1109/ECCE55643.2024.10861791",

language = "English",

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series = "IEEE Energy Conversion Congress and Exposition, ECCE - Proceedings",

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note = "16th IEEE Energy Conversion Congress and Exposition (ECCE 2024), ECCE2024 ; Conference date: 20-10-2024 Through 24-10-2024",

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}

Lin, H, Chung, HS-H & Shen, R 2024, Stability Enhancement of DC Cascaded System Including CPLs by Using Nonlinear Inductor in Source-Interface DC-DC Converter. in 2024 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE Energy Conversion Congress and Exposition, ECCE - Proceedings, IEEE, pp. 4768-4774, 16th IEEE Energy Conversion Congress and Exposition (ECCE 2024), Phoenix, Arizona, United States, 20/10/24. https://doi.org/10.1109/ECCE55643.2024.10861791

Stability Enhancement of DC Cascaded System Including CPLs by Using Nonlinear Inductor in Source-Interface DC-DC Converter. / Lin, Hongjian; Chung, Henry Shu-Hung ; Shen, Ruihua.
2024 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2024. p. 4768-4774 (IEEE Energy Conversion Congress and Exposition, ECCE - Proceedings).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - Stability Enhancement of DC Cascaded System Including CPLs by Using Nonlinear Inductor in Source-Interface DC-DC Converter

AU - Lin, Hongjian

AU - Chung, Henry Shu-Hung

AU - Shen, Ruihua

PY - 2024/10

Y1 - 2024/10

N2 - This paper proposes an enhanced stability scheme for source-interface DC-DC converter in the cascaded systems with constant power loads (CPLs) by using magnetic powder core fabricated nonlinear inductor (NI). CPLs are known for their negative incremental impedance (NII) characteristics, which creates a mismatch between the source-interface DC-DC converter and load converter impedances, leading to system destabilization. To address this issue, this paper introduces the use of the NI in the source-interface DC-DC converter to enhance system stability. Initially, a canonical form of the system is established to access the control-to-output transfer function. Subsequently, stability criteria for the control-to-output characteristics of the system are established to derive the stable power range plane in which the crucial role of the NI is highlighted in enhancing stability. Eventually, the effectiveness of the proposed scheme is verified by the experimental results. © 2024 IEEE.

AB - This paper proposes an enhanced stability scheme for source-interface DC-DC converter in the cascaded systems with constant power loads (CPLs) by using magnetic powder core fabricated nonlinear inductor (NI). CPLs are known for their negative incremental impedance (NII) characteristics, which creates a mismatch between the source-interface DC-DC converter and load converter impedances, leading to system destabilization. To address this issue, this paper introduces the use of the NI in the source-interface DC-DC converter to enhance system stability. Initially, a canonical form of the system is established to access the control-to-output transfer function. Subsequently, stability criteria for the control-to-output characteristics of the system are established to derive the stable power range plane in which the crucial role of the NI is highlighted in enhancing stability. Eventually, the effectiveness of the proposed scheme is verified by the experimental results. © 2024 IEEE.

KW - Constant power load (CPL)

KW - DC Cascaded system

KW - negative incremental impedance (NII)

KW - source-interferface DC-DC converter

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DO - 10.1109/ECCE55643.2024.10861791

M3 - RGC 32 - Refereed conference paper (with host publication)

SN - 979-8-3503-7607-4

T3 - IEEE Energy Conversion Congress and Exposition, ECCE - Proceedings

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BT - 2024 IEEE Energy Conversion Congress and Exposition (ECCE)

PB - IEEE

T2 - 16th IEEE Energy Conversion Congress and Exposition (ECCE 2024)

Y2 - 20 October 2024 through 24 October 2024

ER -

Stability Enhancement of DC Cascaded System Including CPLs by Using Nonlinear Inductor in Source-Interface DC-DC Converter

Abstract

Publication series

Conference

Funding

Research Keywords

RGC Funding Information

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GRF: Use of Nonlinear Inductors in Source-Interface Converters to Compensate for Instability in DC Distribution Networks

GRF: Enhanced Chip Scale Piezoelectric MEMS Magnetic Field Sensors: High Sensitivity and Wide Bandwidth

Cite this

Stability Enhancement of DC Cascaded System Including CPLs by Using Nonlinear Inductor in Source-Interface DC-DC Converter

Abstract

Publication series

Conference

Funding

Research Keywords

RGC Funding Information

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Projects

GRF: Use of Nonlinear Inductors in Source-Interface Converters to Compensate for Instability in DC Distribution Networks

GRF: Enhanced Chip Scale Piezoelectric MEMS Magnetic Field Sensors: High Sensitivity and Wide Bandwidth

Cite this