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oe1(光电查) - 科学论文

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  • [IEEE 2018 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (WoW) - Montréal, QC, Canada (2018.6.3-2018.6.7)] 2018 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer (Wow) - An Elliptical Magnetic Field-Orientated Control for Interoperability and Misalignment Tolerance in Inductive Power Transfer

    摘要： To improve the interoperability and misalignment tolerance of the inductive power transfer (IPT) system, the concepts of circular rotating magnetic field control and elliptical rotating field orientated control(FOC) are proposed in this paper. The method of analogy analysis between LIM (liner inductive motor) and IPT is adopted to improve the magnetic field distribution characteristics. Detailed output voltage derivation of circular pads and DD pads under misalignment are given. An approximate calculation model is built to study the influence of end effect and gap variation on magnetic field distribution. Experimental results verify the laws of circular magnetic field and elliptical magnetic field.

    关键词： misalignment,magnetic field-orientated control,analogy analysis,wireless power transfer,interoperability,inductive power transfer(IPT)

    更新于2025-09-23 15:23:52

  • Application of FRA to Improve the Design and Maintenance of Wireless Power Transfer Systems

    摘要： Frequency response analysis (FRA) plays an important role in the assessment of the mechanical integrity and hence, reliability of high-voltage power transformers. Wireless power transfer (WPT) system introduced by Tesla a 100 years ago based on Faraday’s law of electromagnetic induction is similar to a conventional power transformer. Therefore, the reliability of a large WPT system can also be evaluated using FRA measurement. When the WPT system is constructed, the electrical components and the desired transfer distance need to be ascertained accurately. Furthermore, the structure of the winding and the electrical characteristic of the components in WPT systems may vary due to aging or fault events. FRA measurement can examine the discrepancy between the WPT system parameters and the reference fingerprint data to provide cost-effective condition monitoring-based maintenance scheme for the WPT systems. This paper presents a detailed circuit analysis of a two-coil inductively coupled WPT model in different compensating topologies to accomplish efficient energy transfer. Then, FRA measurement is used to detect the variation in the amplitude and the phase angle of the developed circuit input impedance in a wide frequency range. In addition, displacements due to the placement of ferrite material and the variation of the transfer distance between the transmitter and receiver units are investigated through practical measurements.

    关键词： RLC resonance,inductive power transfer (IPT),Frequency response analysis (FRA),wireless power transfer (WPT)

    更新于2025-09-23 15:22:29