Influence of Discontinuous Modulations on DC Capacitor Power Dissipation and Capacitor Lifetime in Cascaded H-Bridge StatComs

Qingxiang Liu; Ezequiel Rodriguez Ramos; Glen G. Farivar; Christopher D. Townsend; Ramon Leyva; Josep Pou; Jose Rodriguez

doi:10.1109/ECCE-Asia63110.2025.11111986

Influence of Discontinuous Modulations on DC Capacitor Power Dissipation and Capacitor Lifetime in Cascaded H-Bridge StatComs

Qingxiang Liu, Ezequiel Rodriguez Ramos, Glen G. Farivar, Christopher D. Townsend, Ramon Leyva, Josep Pou, Jose Rodriguez

Department of Electrical Engineering

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

Abstract

Discontinuous pulsewidth modulation (DPWM) strategies for cascaded H-bridge (CHB) static compensators (StatComs) primarily focus on reducing switching loss, while overlooking the impact on the de capacitor losses and lifetime. The aim of this study is to examine the influence of different DPWM patterns on the dc capacitors, which are critical components of CHB StatComs. While all examined clamping patterns exhibit reduced switching loss in comparison with sinusoidal pulsewidth modulation, significant divergences arise in terms of their effects on capacitor power loss and lifetime. The study provides valuable insights for further research and design of modulation strategies for CHB StatComs.
©2025 IEEE

Original language	English
Title of host publication	2025 IEEE Energy Conversion Congress & Exposition Asia (ECCE-Asia)
Publisher	IEEE
Number of pages	6
ISBN (Electronic)	979-8-3315-1886-8
ISBN (Print)	979-8-3315-1887-5
DOIs	https://doi.org/10.1109/ECCE-Asia63110.2025.11111986
Publication status	Published - 2025
Event	IEEE Energy Conversion Congress & Exposition Asia - Bengaluru, India Duration: 11 May 2025 → 14 May 2025

Conference

Conference	IEEE Energy Conversion Congress & Exposition Asia
Abbreviated title	IEEE ECCE Asia
Place	India
City	Bengaluru
Period	11/05/25 → 14/05/25

Funding

This research was supported by A*STAR under its RIE2025 Manufacturing Trade and Connectivity (MTC) Industry Alignment Fund-Pre-Positioning (IAF-PP), with Award No. M23L5a0002. The research was also supported by startup funding of the City University of Hong Kong, Hong Kong SAR

Research Keywords

Cascaded H-bridge (CHB)
Discontinuous Pulsewidth Modulation (DPWM)
Static Compensator (StatCom)

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10.1109/ECCE-Asia63110.2025.11111986

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@inproceedings{059dfc1049134bda925e21480cae2b84,

title = "Influence of Discontinuous Modulations on DC Capacitor Power Dissipation and Capacitor Lifetime in Cascaded H-Bridge StatComs",

abstract = "Discontinuous pulsewidth modulation (DPWM) strategies for cascaded H-bridge (CHB) static compensators (StatComs) primarily focus on reducing switching loss, while overlooking the impact on the de capacitor losses and lifetime. The aim of this study is to examine the influence of different DPWM patterns on the dc capacitors, which are critical components of CHB StatComs. While all examined clamping patterns exhibit reduced switching loss in comparison with sinusoidal pulsewidth modulation, significant divergences arise in terms of their effects on capacitor power loss and lifetime. The study provides valuable insights for further research and design of modulation strategies for CHB StatComs.{\textcopyright}2025 IEEE",

keywords = "Cascaded H-bridge (CHB), Discontinuous Pulsewidth Modulation (DPWM), Static Compensator (StatCom)",

author = "Qingxiang Liu and Ramos, {Ezequiel Rodriguez} and Farivar, {Glen G.} and Townsend, {Christopher D.} and Ramon Leyva and Josep Pou and Jose Rodriguez",

year = "2025",

doi = "10.1109/ECCE-Asia63110.2025.11111986",

language = "English",

isbn = "979-8-3315-1887-5",

booktitle = "2025 IEEE Energy Conversion Congress & Exposition Asia (ECCE-Asia)",

publisher = "IEEE",

address = "United States",

note = "IEEE Energy Conversion Congress & Exposition Asia, IEEE ECCE Asia ; Conference date: 11-05-2025 Through 14-05-2025",

}

Liu, Q, Ramos, ER, Farivar, GG, Townsend, CD, Leyva, R, Pou, J & Rodriguez, J 2025, Influence of Discontinuous Modulations on DC Capacitor Power Dissipation and Capacitor Lifetime in Cascaded H-Bridge StatComs. in 2025 IEEE Energy Conversion Congress & Exposition Asia (ECCE-Asia). IEEE, IEEE Energy Conversion Congress & Exposition Asia, Bengaluru, India, 11/05/25. https://doi.org/10.1109/ECCE-Asia63110.2025.11111986

Influence of Discontinuous Modulations on DC Capacitor Power Dissipation and Capacitor Lifetime in Cascaded H-Bridge StatComs. / Liu, Qingxiang; Ramos, Ezequiel Rodriguez; Farivar, Glen G. et al.
2025 IEEE Energy Conversion Congress & Exposition Asia (ECCE-Asia). IEEE, 2025.

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

TY - GEN

T1 - Influence of Discontinuous Modulations on DC Capacitor Power Dissipation and Capacitor Lifetime in Cascaded H-Bridge StatComs

AU - Liu, Qingxiang

AU - Ramos, Ezequiel Rodriguez

AU - Farivar, Glen G.

AU - Townsend, Christopher D.

AU - Leyva, Ramon

AU - Pou, Josep

AU - Rodriguez, Jose

PY - 2025

Y1 - 2025

N2 - Discontinuous pulsewidth modulation (DPWM) strategies for cascaded H-bridge (CHB) static compensators (StatComs) primarily focus on reducing switching loss, while overlooking the impact on the de capacitor losses and lifetime. The aim of this study is to examine the influence of different DPWM patterns on the dc capacitors, which are critical components of CHB StatComs. While all examined clamping patterns exhibit reduced switching loss in comparison with sinusoidal pulsewidth modulation, significant divergences arise in terms of their effects on capacitor power loss and lifetime. The study provides valuable insights for further research and design of modulation strategies for CHB StatComs.©2025 IEEE

AB - Discontinuous pulsewidth modulation (DPWM) strategies for cascaded H-bridge (CHB) static compensators (StatComs) primarily focus on reducing switching loss, while overlooking the impact on the de capacitor losses and lifetime. The aim of this study is to examine the influence of different DPWM patterns on the dc capacitors, which are critical components of CHB StatComs. While all examined clamping patterns exhibit reduced switching loss in comparison with sinusoidal pulsewidth modulation, significant divergences arise in terms of their effects on capacitor power loss and lifetime. The study provides valuable insights for further research and design of modulation strategies for CHB StatComs.©2025 IEEE

KW - Cascaded H-bridge (CHB)

KW - Discontinuous Pulsewidth Modulation (DPWM)

KW - Static Compensator (StatCom)

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U2 - 10.1109/ECCE-Asia63110.2025.11111986

DO - 10.1109/ECCE-Asia63110.2025.11111986

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

SN - 979-8-3315-1887-5

BT - 2025 IEEE Energy Conversion Congress & Exposition Asia (ECCE-Asia)

PB - IEEE

T2 - IEEE Energy Conversion Congress & Exposition Asia

Y2 - 11 May 2025 through 14 May 2025

ER -

Influence of Discontinuous Modulations on DC Capacitor Power Dissipation and Capacitor Lifetime in Cascaded H-Bridge StatComs

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