Magnetic Coupling Enhancement for Contactless Power Transfer With Superconductors

As diamagnetic materials, superconductors confine magnetic fields efficiently. Based on this property, we designed and fabricated a novel contactless power transfer (CPT) coupler consisting of a ferrite core wrapped with superconductor layers, which results in an obvious enhancement of the coupling coefficient. We analyzed the underlying causes of coupling enhancement with a magnetic circuit model. Additionally, we used finite-element simulations to investigate the performance of the structure as a function of applied frequency. The results predict that the coupler would be efficient up to 50 kHz. Thus, the modified coupler should be practical for CPT systems.

[1]  Y. Genenko,et al.  Finite-element simulations of hysteretic ac losses in a magnetically coated superconducting tubular wire subject to an oscillating transverse magnetic field , 2015, 1506.01804.

[2]  Il-Yong Park,et al.  Implementation of wireless remote controller with the function of tracking inner coil position for implantable active medical devices , 2013 .

[3]  Jordi Prat-Camps,et al.  Quasistatic Metamaterials: Magnetic Coupling Enhancement by Effective Space Cancellation. , 2016, Advanced materials.

[4]  Xinbo Ruan,et al.  8-Type contactless transformer applied in railway inductive power transfer system , 2013, 2013 IEEE Energy Conversion Congress and Exposition.

[5]  G. Ma,et al.  Magnetic Field Transfer of Superconductor-Ferromagnet Heterostructures up to 10 kHz , 2017, IEEE Transactions on Applied Superconductivity.

[6]  Y. Genenko,et al.  Magnetic cloaking by a paramagnet/superconductor cylindrical tube in the critical state , 2014, 1403.7917.

[7]  Francesco Grilli,et al.  Numerical models for ac loss calculation in large-scale applications of HTS coated conductors , 2015, 1509.05560.

[8]  Axel Mertens,et al.  Design optimization of various contactless power transformer topologies for wireless charging of electric vehicles , 2016, 2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe).

[9]  Jordi Prat-Camps,et al.  Experimental realization of magnetic energy concentration and transmission at a distance by metamaterials , 2013, 1308.5878.

[10]  Yuki Sato,et al.  DC Magnetic Cloak , 2012, Advanced materials.

[11]  F. Gömöry,et al.  Magnetization loop modelling for superconducting/ferromagnetic tube of an ac magnetic cloak , 2015 .

[12]  Y. Genenko,et al.  Finite-element simulations of hysteretic ac losses in a bilayer superconductor/ferromagnet heterostructure subject to an oscillating transverse magnetic field , 2011 .

[13]  Chang-Qing Ye,et al.  Cloaking the Static Magnetic Fields by Alternate Superconductor–Ferromagnet Heterostructure , 2016, IEEE Transactions on Applied Superconductivity.

[14]  M. Enokizono,et al.  Fatigue Evaluation for a Ferritic Stainless Steel (SUS430) by the Eddy Current Method Using the Pancake-Type Coil , 2010, IEEE Transactions on Magnetics.

[15]  Fan Yang,et al.  dc electric invisibility cloak. , 2012, Physical review letters.

[16]  Sailing He,et al.  Three-dimensional magnetic cloak working from d.c. to 250 kHz , 2015, Nature communications.

[17]  J I Cirac,et al.  Long-distance transfer and routing of static magnetic fields. , 2013, Physical review letters.

[18]  A. Badía-Majós,et al.  Magnetic invisibility of the magnetically coated type-II superconductor in partially penetrated state , 2016 .

[19]  Carles Navau,et al.  Antimagnets: controlling magnetic fields with superconductor–metamaterial hybrids , 2011, 1107.1647.

[20]  Honnyong Cha,et al.  Comparison and analysis of the contactless power transfer systems using the parameters of the contactless transformer , 2006 .

[21]  G. Ma,et al.  Transportation of Quasistatic Magnetic Fields by Superconductor-Ferromagnet Heterostructures , 2016, IEEE Magnetics Letters.

[22]  M. Chorowski,et al.  Frequency Effect on Shielding Quality of Closed Superconducting Magnetic Shields Made of Superconducting Tapes , 2016, IEEE transactions on applied superconductivity.

[23]  G. Ma,et al.  Experimental and Numerical Studies of the Magnetic Field Transfer of a Magnetic Cylinder Coated with Superconductor , 2016 .

[24]  Nenad Mijatovic,et al.  Calculation of alternating current losses in stacks and coils made of second generation high temperature superconducting tapes for large scale applications , 2013, 1308.2568.

[25]  Calculation of AC losses in stacks and coils made of second generation high temperature superconducting tapes for large scale applications , 2013 .