Wireless Energy Trading in Traffic Internet

Liu, Wei; Chau, K. T.; Chow, Calvin C. T.; Lee, Christopher

doi:10.1109/tpel.2021.3118458

Cited by 30 publications

(1 citation statement)

References 35 publications

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“…Magnetic coupling resonance-based wireless power transfer (WPT) systems have drawn considerable attention and research interest recently for their high embeddability and great convenience [1][2][3]. Undoubtedly, WPT is gradually becoming one of the most prominent technologies in future industrial applications [4,5]. With its rapid development, modern industrial applications have placed more requirements on this technology for higher convenience and flexibility in control [6,7].…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Optimal Current Vector for HTS-Based Multi-Input Wireless Power Transfer Systems

2022

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This paper presents a newly-designed optimal current algorithm for high-temperature superconductor (HTS)-based multi-input wireless power transfer (WPT) systems. In this way, both high controllability and lower AC losses can be achieved in the proposed systems, and they are especially superior for long-range and long-time operations. Simplified AC loss modeling for HTS windings is developed for the designed transmitter coils. The accordant optimal current vector is derived and analyzed in order to achieve the highest output power and the lowest primary AC losses. With the proper current control of multiple transmitters and the use of a designed HTS coupler, the system controllability can be greatly improved compared with conventional WPT systems. Based on the information on the impedance characteristics on the primary side, the magnetic field generated by different transmitters can be maximized at the target position. Thus, the maximum output power tracking can be realized with a relatively long transmission distance and a low coupling coefficient. Both active and passive solutions are designed and presented to deal with the cross-coupling issue in multi-input WPT systems. For numerical validation, a practical prototype of the HTS couplers is fabricated. An experimental platform is established with a liquid nitrogen cooling system. The test results further validate the feasibility and the high controllability of the proposed system.

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