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Research on Design of PDM-based Feedforward Power Compensator for PSK Communication in WPT System
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Sijia ZONG1, Ming LI1, Chengxuan WANG1, Yunping ZHENG1, Yanfang FAN2
Journal of Power Supply | 2026, 24(8) : 220 - 229
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Journal of Power Supply | 2026, 24(8): 220-229
• Wireless Power Transfer •
Research on Design of PDM-based Feedforward Power Compensator for PSK Communication in WPT System
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Sijia ZONG1, Ming LI1, Chengxuan WANG1, Yunping ZHENG1, Yanfang FAN2
Affiliations
  • 1.Electric Power Research Institute, State Grid Xinjiang Electric Power Co., Ltd., Urumqi 830011, China
  • 2.School of Electrical Engineering, Xinjiang University, Urumqi 830011, China
Published: 2026-08-30 doi: 10.13234/j.issn.2095-2805.2026.8.220
Outline
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A wireless power transfer (WPT) system usually needs dual-side cooperated control for efficiency optimization and power regulation, which requires the establishment of a wireless communication link between the transmitter and the receiver. Phase shift keying (PSK) communication is a good choice for WPT systems because of its advantages of high security and low hardware cost. However, the converter phase modulation required by the PSK communication will cause output power and voltage fluctuations. The relationship between the phase modulation depth and output fluctuation amplitude is analyzed. Then, a pulse density modulation-based feedforward power compensation method is put forward to compensate for the output voltage fluctuations caused by the PSK communication. Experimental results show that the proposed power compensator can suppress the output voltage fluctuations to an insignificant level without a large output filter capacitor, indicating that the proposed method overcomes the main drawback of PSK communication in WPT systems.

Wireless power transfer (WPT)  /  feedforward power compensator  /  phase shift keying (PSK)  /  pulse density modulation
宗思佳, 李明, 王呈轩, 郑云平, 樊艳芳. 基于脉冲密度调制的PSK通信下无线电能传输系统前馈功率补偿器的设计研究. 电源学报, 2026 , 24 (8) : 220 -229 . DOI: 10.13234/j.issn.2095-2805.2026.8.220
Sijia ZONG, Ming LI, Chengxuan WANG, Yunping ZHENG, Yanfang FAN. Research on Design of PDM-based Feedforward Power Compensator for PSK Communication in WPT System[J]. Journal of Power Supply, 2026 , 24 (8) : 220 -229 . DOI: 10.13234/j.issn.2095-2805.2026.8.220
Funding
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  • Natural Science Foundation of Xinjiang Uygur Autonomous Region(2022D01C365; 2022D01C662)
Appendix
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Year 2026 volume 24 Issue 8
40
8
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Article Info
doi: 10.13234/j.issn.2095-2805.2026.8.220
  • Receive Date：2024-09-25
  • Online Date：2026-10-29
  • Published：2026-08-30
Article Data
Affiliations
History
  • Received：2024-09-25
  • Revised：2024-12-02
  • Accepted：2024-12-13
Funding
Natural Science Foundation of Xinjiang Uygur Autonomous Region(2022D01C365; 2022D01C662)
Affiliations
    1.Electric Power Research Institute, State Grid Xinjiang Electric Power Co., Ltd., Urumqi 830011, China
    2.School of Electrical Engineering, Xinjiang University, Urumqi 830011, China
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