Seamless Zero-Phase Angle Operation in Wireless Power Transfer Systems Bridging Bifurcation and Non-Bifurcation Scenarios

Jiayu Zhou; Jiayang Wu; Siew Chong Tan; Shu-Yuen Ron Hui

doi:10.1109/PEDS63958.2025.11144837

Seamless Zero-Phase Angle Operation in Wireless Power Transfer Systems Bridging Bifurcation and Non-Bifurcation Scenarios

Department of Electrical Engineering

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

Abstract

This paper presents a zero-phase angle control strategy for wireless power transfer systems, achieving quasi optimal efficiency across the entire power range without the need for additional DC-DC converters or dual-side communication systems. The proposed method implements zerophase angle control on both sides of the WPT system, ensuring zero reactive power operation throughout its full operating range, while utilizing pulse density modulation to enable seamless power adjustment and minimize switching losses. Moreover, the system can smoothly transition between bifurcation and non-bifurcation regions, enabling full-range power regulation with quasi optimal efficiency by adjusting the pulse density on the primary side. The effectiveness of the proposed method is verified through simulations results. © 2025 IEEE.

Original language	English
Title of host publication	2025 IEEE 15th International Conference on Power Electronics and Drive Systems (PEDS)
Publisher	IEEE
Number of pages	5
ISBN (Electronic)	9798331530501
ISBN (Print)	979-8-3315-3051-8
DOIs	https://doi.org/10.1109/PEDS63958.2025.11144837
Publication status	Published - 2025
Event	15th IEEE International Conference on Power Electronics and Drive Systems, PEDS 2025 - Penang, Malaysia Duration: 21 Jul 2025 → 24 Jul 2025

Publication series

Name	Proceedings of the International Conference on Power Electronics and Drive Systems
ISSN (Print)	2164-5256
ISSN (Electronic)	2164-5264

Conference

Conference	15th IEEE International Conference on Power Electronics and Drive Systems, PEDS 2025
Place	Malaysia
City	Penang
Period	21/07/25 → 24/07/25

Funding

This project was supported by Hong Kong RGC Themebased Research Project T23-708/24-N.

Research Keywords

Bifurcation
optimal efficiency
pulse density modulation
wireless power transfer
zero-phase angle

RGC Funding Information

RGC-funded

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10.1109/PEDS63958.2025.11144837

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Zhou, J., Wu, J., Tan, S. C., & Hui, S.-Y. R. (2025). Seamless Zero-Phase Angle Operation in Wireless Power Transfer Systems Bridging Bifurcation and Non-Bifurcation Scenarios. In 2025 IEEE 15th International Conference on Power Electronics and Drive Systems (PEDS) (Proceedings of the International Conference on Power Electronics and Drive Systems). IEEE. https://doi.org/10.1109/PEDS63958.2025.11144837

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title = "Seamless Zero-Phase Angle Operation in Wireless Power Transfer Systems Bridging Bifurcation and Non-Bifurcation Scenarios",

abstract = "This paper presents a zero-phase angle control strategy for wireless power transfer systems, achieving quasi optimal efficiency across the entire power range without the need for additional DC-DC converters or dual-side communication systems. The proposed method implements zerophase angle control on both sides of the WPT system, ensuring zero reactive power operation throughout its full operating range, while utilizing pulse density modulation to enable seamless power adjustment and minimize switching losses. Moreover, the system can smoothly transition between bifurcation and non-bifurcation regions, enabling full-range power regulation with quasi optimal efficiency by adjusting the pulse density on the primary side. The effectiveness of the proposed method is verified through simulations results. {\textcopyright} 2025 IEEE.",

keywords = "Bifurcation, optimal efficiency, pulse density modulation, wireless power transfer, zero-phase angle",

author = "Jiayu Zhou and Jiayang Wu and Tan, \{Siew Chong\} and Hui, \{Shu-Yuen Ron\}",

year = "2025",

doi = "10.1109/PEDS63958.2025.11144837",

language = "English",

isbn = "979-8-3315-3051-8",

series = "Proceedings of the International Conference on Power Electronics and Drive Systems",

publisher = "IEEE",

booktitle = "2025 IEEE 15th International Conference on Power Electronics and Drive Systems (PEDS)",

address = "United States",

note = "15th IEEE International Conference on Power Electronics and Drive Systems, PEDS 2025 ; Conference date: 21-07-2025 Through 24-07-2025",

}

Zhou, J, Wu, J , Tan, SC & Hui, S-YR 2025, Seamless Zero-Phase Angle Operation in Wireless Power Transfer Systems Bridging Bifurcation and Non-Bifurcation Scenarios. in 2025 IEEE 15th International Conference on Power Electronics and Drive Systems (PEDS). Proceedings of the International Conference on Power Electronics and Drive Systems, IEEE, 15th IEEE International Conference on Power Electronics and Drive Systems, PEDS 2025, Penang, Malaysia, 21/07/25. https://doi.org/10.1109/PEDS63958.2025.11144837

Seamless Zero-Phase Angle Operation in Wireless Power Transfer Systems Bridging Bifurcation and Non-Bifurcation Scenarios. / Zhou, Jiayu; Wu, Jiayang ; Tan, Siew Chong et al.
2025 IEEE 15th International Conference on Power Electronics and Drive Systems (PEDS). IEEE, 2025. (Proceedings of the International Conference on Power Electronics and Drive Systems).

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

TY - GEN

T1 - Seamless Zero-Phase Angle Operation in Wireless Power Transfer Systems Bridging Bifurcation and Non-Bifurcation Scenarios

AU - Zhou, Jiayu

AU - Wu, Jiayang

AU - Tan, Siew Chong

AU - Hui, Shu-Yuen Ron

PY - 2025

Y1 - 2025

N2 - This paper presents a zero-phase angle control strategy for wireless power transfer systems, achieving quasi optimal efficiency across the entire power range without the need for additional DC-DC converters or dual-side communication systems. The proposed method implements zerophase angle control on both sides of the WPT system, ensuring zero reactive power operation throughout its full operating range, while utilizing pulse density modulation to enable seamless power adjustment and minimize switching losses. Moreover, the system can smoothly transition between bifurcation and non-bifurcation regions, enabling full-range power regulation with quasi optimal efficiency by adjusting the pulse density on the primary side. The effectiveness of the proposed method is verified through simulations results. © 2025 IEEE.

AB - This paper presents a zero-phase angle control strategy for wireless power transfer systems, achieving quasi optimal efficiency across the entire power range without the need for additional DC-DC converters or dual-side communication systems. The proposed method implements zerophase angle control on both sides of the WPT system, ensuring zero reactive power operation throughout its full operating range, while utilizing pulse density modulation to enable seamless power adjustment and minimize switching losses. Moreover, the system can smoothly transition between bifurcation and non-bifurcation regions, enabling full-range power regulation with quasi optimal efficiency by adjusting the pulse density on the primary side. The effectiveness of the proposed method is verified through simulations results. © 2025 IEEE.

KW - Bifurcation

KW - optimal efficiency

KW - pulse density modulation

KW - wireless power transfer

KW - zero-phase angle

UR - https://www.scopus.com/pages/publications/105017005720

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-105017005720&origin=recordpage

U2 - 10.1109/PEDS63958.2025.11144837

DO - 10.1109/PEDS63958.2025.11144837

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

SN - 979-8-3315-3051-8

T3 - Proceedings of the International Conference on Power Electronics and Drive Systems

BT - 2025 IEEE 15th International Conference on Power Electronics and Drive Systems (PEDS)

PB - IEEE

T2 - 15th IEEE International Conference on Power Electronics and Drive Systems, PEDS 2025

Y2 - 21 July 2025 through 24 July 2025

ER -

Zhou J, Wu J , Tan SC , Hui SYR. Seamless Zero-Phase Angle Operation in Wireless Power Transfer Systems Bridging Bifurcation and Non-Bifurcation Scenarios. In 2025 IEEE 15th International Conference on Power Electronics and Drive Systems (PEDS). IEEE. 2025. (Proceedings of the International Conference on Power Electronics and Drive Systems). Epub 2025 Sept 4. doi: 10.1109/PEDS63958.2025.11144837

Seamless Zero-Phase Angle Operation in Wireless Power Transfer Systems Bridging Bifurcation and Non-Bifurcation Scenarios

Abstract

Publication series

Conference

Funding

Research Keywords

RGC Funding Information

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Other Access Options

Permanent Link

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TBRS: High-Frequency, High-Power and High-Efficiency Wireless Power Transfer Technologies

Cite this

Seamless Zero-Phase Angle Operation in Wireless Power Transfer Systems Bridging Bifurcation and Non-Bifurcation Scenarios

Abstract

Publication series

Conference

Funding

Research Keywords

RGC Funding Information

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Projects

TBRS: High-Frequency, High-Power and High-Efficiency Wireless Power Transfer Technologies

Cite this