Introduction Although widely embraced in clinical applications, array coils [1] still pose tremendous design challenges due to coupling between coil elements [2]. Several strategies have been proposed for eliminating mutual inductance, such as overlapping [1, 3], orthogonal positioning [3], use of low impedance preamplifiers [1], digital postprocessing [4], capacitive/inductive networks [5] and...

In this paper, winding function method (WFM), applied to a faulted synchronous generator, is modified and is used for online diagnosis of mixed eccentricity fault. For the first time, the static and mixed eccentricities are modeled in synchronous generators. A modified winding function (MWF) method introduced here is more precise compared with previous methods. This MWF enables to compute the a...

Multiphase dc-excited Vernier reluctance machine (DC-VRM) exhibits the merits of robust structure, small torque ripple, and good fault-tolerant ability. Developing advanced sensorless drive methods can further promote its application in safety-critical system. In this article, pulse injection are optimized a six-phase DC-VRM parallel H-bridge system to strengthen their acceleration performance ...

In the inductive power transfer (IPT) system, using multiple coil branches instead of a whole large can effectively solve thickness problem and save space. that case, there are small parameter differences in mutual inductance self-inductance between parallel. These amplified high-frequency IPT systems, resulting different currents flowing through branches. The current unbalance will create many...

electric arc furnaces (eafs) are unbalanced, nonlinear and time varying loads, which can cause many problems in the power system quality. in steel industries, the two arc furnaces often perform in parallel and stand on a single bus, which surely deteriorate the power quality. in this paper, in order to study and analyze the harmful effects of parallel operation of eafs, first, a three phase arc...

Power semiconductors based on wide bandgap (WBG) devices are capable of fast switching and have low on-resistance. Accordingly, a sensor with higher bandwidth is required for circuit inspection switch current measurements. Thus, it necessary to in the printed board (PCB) diagnosis protection surface mount device (SMD) type system. pickup coil advantages high degree configuration freedom, bandwi...

B. Wu, P. Qu, J. Yuan, G. X. Shen MRI Lab, Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong INTRODUCTION Minimizing the mutual coupling among array elements is necessary for parallel MRI. Preamplifiers with extremely low input-impedance [1] and capacitive decoupling networks [2, 3] have become the primary techniques for decoupling arbitrarily placed co...