金属转轴无线感应供电系统传输功率分析与结构优化

金属转轴扭矩、功率和形变等参数的在线检测在船舶等领域具有广泛的工程应用背景,对旋转机构的供电问题是影响检测可靠性和实用性的关键。传统的滑环和电池供电方式存在可靠性和寿命上的局限性。本文设计了一种用于金属转轴的侧置式感应供电系统,建立了磁场耦合单元的有限元分析模型,分析了互感耦合参数对系统传输功率和效率的影响,得出了在不同谐振拓扑结构下以最大传输功率为目标的最佳互感耦合参数,包括最佳的原副边线圈电感值及其比例等等关系,以及金属转轴与磁芯间距离。进一步分析了通过磁屏蔽技术和改进原边线圈绕制方式来提高金属转轴感应供电系统能量传输效率的可行性。最后通过实验验证了本文设计和分析方法的准确性和有效性。

Transmission Power Analysis and Structure Optimization of Wireless Induction Power Supply System on Metal Shaft

The on-line measurement of the parameters such as torque, power and deformation of metal shaft is widely used in ship and other fields, The power supply for the measurement system on rotating shaft is the key to affect the reliability and practicability of detection. Traditional slip-ring and battery power supply methods have limitations in reliability and life. In this paper, a side-mounted induction power supply system for metal rotating shaft is designed,.The finite element analysis model of magnetic field coupling element is established, The influence of mutual inductance coupling parameters on the transmission power and efficiency of the system is analyzed, The optimal mutual inductance coupling parameters, which aim at maximum transmission power under different resonant topologies, are obtained, including the optimal inductance value and proportion of the primary and secondary coil, and the distance between the metal rotating shaft and the magnetic core. The feasibility of improving the energy transmission efficiency of metal shaft induction power supply system by using magnetic shielding technology and improving the coil winding of original side is further analyzed. Finally, the accuracy and validity of the design and analysis method in this paper are verified by experiments.