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<p>Among wireless power transfer (WPT) technologies, such as electric vehicles, magnetic resonance WPT technology stands out for its advantages, such as stable power transmission and strong interference resistance, and is gaining increasing attention in research. This research aims to improve the efficiency of traditional WPT systems and achieve flexible energy allocation on the basis of a dual LCC (inductor–capacitor–capacitor) multicoil resonant WPT system. In particular, an innovative structure that allows a single power source to simultaneously supply power to at least two loads, each with independent adjustable capabilities, is proposed. The system employs a symmetric rectification control method to ensure in-phase relationships between the input voltage and the current, effectively avoiding operation in a detuned state. This study analyzes the system current and the equivalent input and output loads under the proposed control method. When the variation in the control parameter <i>D</i> is examined, the system’s performance under different operating conditions can be comprehensively explained. This study focuses on the independent adjustment characteristics of multiple loads, specifically, the impact of adjusting one load on the performance of other branches and the overall system. Considering aspects, such as output power and efficiency, in-depth investigations into the system characteristics of the proposed multiload series structure are conducted. This study has confirmed the superiority and the effectiveness of the multiload output wireless power transmission system via comparative analysis with traditional structures and experimental verification, demonstrating its feasibility and performance in practical applications.</p>

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Multiload output MCRWPT system and control method analysis

  • 期刊论文

  • 发表日期：

    2025年3月7日

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  • Yanjin Hou,
  • Yanhua Guo,
  • Jintao Wang,
  • Siyu Hou,
  • Lijun Cai,
  • Ying Huang,
  • Zhizhen Liu

摘要

Among wireless power transfer (WPT) technologies, such as electric vehicles, magnetic resonance WPT technology stands out for its advantages, such as stable power transmission and strong interference resistance, and is gaining increasing attention in research. This research aims to improve the efficiency of traditional WPT systems and achieve flexible energy allocation on the basis of a dual LCC (inductor–capacitor–capacitor) multicoil resonant WPT system. In particular, an innovative structure that allows a single power source to simultaneously supply power to at least two loads, each with independent adjustable capabilities, is proposed. The system employs a symmetric rectification control method to ensure in-phase relationships between the input voltage and the current, effectively avoiding operation in a detuned state. This study analyzes the system current and the equivalent input and output loads under the proposed control method. When the variation in the control parameter D is examined, the system’s performance under different operating conditions can be comprehensively explained. This study focuses on the independent adjustment characteristics of multiple loads, specifically, the impact of adjusting one load on the performance of other branches and the overall system. Considering aspects, such as output power and efficiency, in-depth investigations into the system characteristics of the proposed multiload series structure are conducted. This study has confirmed the superiority and the effectiveness of the multiload output wireless power transmission system via comparative analysis with traditional structures and experimental verification, demonstrating its feasibility and performance in practical applications.