Improved Modulation Strategy for Single-Phase Integrated Wireless Charging System

Xin Felix Chen; Chi K. Tse; Qianhong Chen

doi:10.1109/PEDG62294.2025.11060120

Improved Modulation Strategy for Single-Phase Integrated Wireless Charging System

Xin Felix Chen^*
, Chi K. Tse
, Qianhong Chen

^*Corresponding author for this work

Department of Electrical Engineering

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

Abstract

Wireless charging systems are widely used in electric vehicles (EVs) and often employ a two-stage structure. However, this structure often leads to increased losses and necessitates the use of bulky electrolytic capacitors with limited lifespans. To address these issues, matrix converters have been introduced to wireless charging systems. Nevertheless, the use of conventional sinusoidal pulse width modulation (SPWM) in the matrix converter-based system can lead to excessive total harmonic distortion (THD). Therefore, this study focuses on improving the modulation strategy for matrix converter-based wireless charging systems. By reallocating the dwell time of active states and zero states, the system can provide a more precise synthesized current to follow the grid sinusoidal envelope, ultimately improving the THD performance. Finally, a simulation model is built to verify the theoretical analysis, and a THD of 2.57% is achieved.
© 2025 IEEE

Original language	English
Title of host publication	The 2025 IEEE 16th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)
Publisher	IEEE
Pages	1159-1164
Number of pages	6
ISBN (Electronic)	979-8-3315-8549-5
DOIs	https://doi.org/10.1109/PEDG62294.2025.11060120
Publication status	Published - 2025

Research Keywords

Modulation
electrolytic capacitorless
matrix converter
wireless power transfer

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10.1109/PEDG62294.2025.11060120

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@inproceedings{58c1aadceb1e43bdbf23add2f1c00fbf,

title = "Improved Modulation Strategy for Single-Phase Integrated Wireless Charging System",

abstract = "Wireless charging systems are widely used in electric vehicles (EVs) and often employ a two-stage structure. However, this structure often leads to increased losses and necessitates the use of bulky electrolytic capacitors with limited lifespans. To address these issues, matrix converters have been introduced to wireless charging systems. Nevertheless, the use of conventional sinusoidal pulse width modulation (SPWM) in the matrix converter-based system can lead to excessive total harmonic distortion (THD). Therefore, this study focuses on improving the modulation strategy for matrix converter-based wireless charging systems. By reallocating the dwell time of active states and zero states, the system can provide a more precise synthesized current to follow the grid sinusoidal envelope, ultimately improving the THD performance. Finally, a simulation model is built to verify the theoretical analysis, and a THD of 2.57\% is achieved. {\textcopyright} 2025 IEEE",

keywords = "Modulation, electrolytic capacitorless, matrix converter, wireless power transfer",

author = "Chen, \{Xin Felix\} and Tse, \{Chi K.\} and Qianhong Chen",

year = "2025",

doi = "10.1109/PEDG62294.2025.11060120",

language = "English",

pages = "1159--1164",

booktitle = "The 2025 IEEE 16th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)",

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Improved Modulation Strategy for Single-Phase Integrated Wireless Charging System. / Chen, Xin Felix ; Tse, Chi K.; Chen, Qianhong.
The 2025 IEEE 16th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) . IEEE, 2025. p. 1159-1164.

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

TY - GEN

T1 - Improved Modulation Strategy for Single-Phase Integrated Wireless Charging System

AU - Chen, Xin Felix

AU - Tse, Chi K.

AU - Chen, Qianhong

PY - 2025

Y1 - 2025

N2 - Wireless charging systems are widely used in electric vehicles (EVs) and often employ a two-stage structure. However, this structure often leads to increased losses and necessitates the use of bulky electrolytic capacitors with limited lifespans. To address these issues, matrix converters have been introduced to wireless charging systems. Nevertheless, the use of conventional sinusoidal pulse width modulation (SPWM) in the matrix converter-based system can lead to excessive total harmonic distortion (THD). Therefore, this study focuses on improving the modulation strategy for matrix converter-based wireless charging systems. By reallocating the dwell time of active states and zero states, the system can provide a more precise synthesized current to follow the grid sinusoidal envelope, ultimately improving the THD performance. Finally, a simulation model is built to verify the theoretical analysis, and a THD of 2.57% is achieved. © 2025 IEEE

AB - Wireless charging systems are widely used in electric vehicles (EVs) and often employ a two-stage structure. However, this structure often leads to increased losses and necessitates the use of bulky electrolytic capacitors with limited lifespans. To address these issues, matrix converters have been introduced to wireless charging systems. Nevertheless, the use of conventional sinusoidal pulse width modulation (SPWM) in the matrix converter-based system can lead to excessive total harmonic distortion (THD). Therefore, this study focuses on improving the modulation strategy for matrix converter-based wireless charging systems. By reallocating the dwell time of active states and zero states, the system can provide a more precise synthesized current to follow the grid sinusoidal envelope, ultimately improving the THD performance. Finally, a simulation model is built to verify the theoretical analysis, and a THD of 2.57% is achieved. © 2025 IEEE

KW - Modulation

KW - electrolytic capacitorless

KW - matrix converter

KW - wireless power transfer

UR - https://www.webofscience.com/wos/woscc/full-record/WOS:001543692200203

U2 - 10.1109/PEDG62294.2025.11060120

DO - 10.1109/PEDG62294.2025.11060120

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

SP - 1159

EP - 1164

BT - The 2025 IEEE 16th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)

PB - IEEE

ER -

Improved Modulation Strategy for Single-Phase Integrated Wireless Charging System

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Research Keywords

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