Efficiency Optimization Method for Bidirectional Wireless Power Transfer System Based on Phase-shift Control and Mode Switching

ZHANG Baokun; DENG Junjun; LIN Ni; WANG Zhenpo; GAN Haiqing; YUAN Xiaodong

doi:10.7500/AEPS20240901002

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Efficiency Optimization Method for Bidirectional Wireless Power Transfer System Based on Phase-shift Control and Mode Switching

Application Research | 更新时间：2025-09-25

- Efficiency Optimization Method for Bidirectional Wireless Power Transfer System Based on Phase-shift Control and Mode Switching
- Automation of Electric Power Systems Vol. 49, Issue 16, Pages: 187-196(2025)
- 作者机构：
  
  1.北京理工大学电动车辆国家工程研究中心，北京市 100081
  2.国网江苏省电力有限公司，江苏省南京市 210000
- 作者简介：
- 基金信息：
  
  National Key R&D Program of China(2021YFB2501604)
- DOI：10.7500/AEPS20240901002
  CLC：
- Received：01 September 2024，
  
  Revised：2025-02-09，
  
  Published Online：11 June 2025，
  
  Published：25 August 2025
- 稿件说明：
移动端阅览
张保坤,邓钧君,林倪等.基于移相控制与模式切换的双向无线电能传输系统效率优化方法[J].电力系统自动化,2025,49(16):187-196.

ZHANG Baokun,DENG Junjun,LIN Ni,et al.Efficiency Optimization Method for Bidirectional Wireless Power Transfer System Based on Phase-shift Control and Mode Switching[J].Automation of Electric Power Systems,2025,49(16):187-196.
张保坤,邓钧君,林倪等.基于移相控制与模式切换的双向无线电能传输系统效率优化方法[J].电力系统自动化,2025,49(16):187-196. DOI： 10.7500/AEPS20240901002.

ZHANG Baokun,DENG Junjun,LIN Ni,et al.Efficiency Optimization Method for Bidirectional Wireless Power Transfer System Based on Phase-shift Control and Mode Switching[J].Automation of Electric Power Systems,2025,49(16):187-196. DOI： 10.7500/AEPS20240901002.

摘要

为提升电动汽车双向无线电能传输系统在宽功率范围的运行效率，以采用双耦合双边电感-电容-电容串并联（LCC-LCC）补偿拓扑的系统为研究对象，提出了一种多变量-多模式联合的高效调控策略。首先，推导了谐振网络和功率变换器的高效条件，作为效率优化方法的理论依据。其次，研究了适合不同激励电压方案的时域模型；在此基础上，分析了实现阻抗匹配以及功率器件临界软开关、以效率最优为导向的三移相控制方法。然后，研究了高频变换器的全桥、半桥、混合桥这3种运行模式，并通过模式切换来进一步减小外移相角的偏移程度、降低开关损耗、适应不同的参数及工况。最后，搭建了双向无线电能传输系统实验平台，在不同工况下验证了所提模型、方法和策略的有效性。实验结果表明，在5%~100%的功率范围内，系统的直流-直流转换效率保持在94.0%~96.4%。

Abstract

To enhance the operational efficiency of the bidirectional wireless power transfer (BWPT) system for electric vehicles over a wide power range

this paper focuses on a dual-coupled double-sided inductor-capacitor-capacitor series and parallel connection (LCC-LCC) compensation topology and proposes a multi-variable and multi-mode combined regulation strategy for high-efficiency operation. Firstly

the high-efficiency conditions of the resonant network and the power converter are derived as the theoretical basis for the efficiency optimization method. Secondly

a time-domain model compatible with various excitation voltage schemes is developed. Based on this model

the triple-phase-shift control method is analyzed

which achieves impedance matching

critical soft switching of power devices

and optimal efficiency. Furthermore

three operation modes of the high-frequency converter

namely full-bridge

half-bridge

and mixed-bridge

are studied. Mode-switching coordination is introduced to minimize the deviation of the external phase-shift angle

reduce switching losses

and adapt to different parameters and operating conditions. Finally

the experimental platform of a BWPT system is established. The effectiveness of the proposed model

method

and strategy is verified under various operating conditions. Experimental results show that the system achieves a DC-DC conversion efficiency of 94.0%~96.4% across the power range of 5%~100%.

关键词

Keywords

references

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