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In this work, the magnetic resonance imaging (MRI) radio frequency (RF)-induced heating mechanism for an esophageal stent is discussed from the prospective of forward scattering and the reciprocity theorem. We conclude that the RF-induced heating largely depends on the induced currents on the surface of the stent. Based on this understanding, a novel implantable segmented stent structure is developed...
Permanent magnet vernier (PMV) machines are attracting more and more attention due to its high power density and simple mechanical structure. In this paper, a novel PMV machine with improved permanent magnet circuit is proposed. For the proposed PMV machine, half of the PMs in the rotor are moved from rotor to the stator slot opening, and Halbach array PMs are employed in the stator. The analysis...
The 2.5D forward method has been widely used in geophysical applications such as single-well, cross-well and controlled source electromagnetic measurements [1]. In this work, we proposed a two-dimensional (2-D) finite-difference frequency domain method for solving geophysical prospecting problems. The method is based on spectral domain and all the field quantities are expanded using Fourier transformation...
This paper proposes vernier reluctance dual-stator machines with semi-closed slot. The structure of vernier reluctance dual-stator machines with semi-closed slot is firstly given, followed by a comprehensive comparison with the conventional structure in aspects of no load flux linkage, cogging torque and torque. The effect of inner stator shift on the performance of vernier reluctance dual-stator...
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