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Power frequency electromagnetic field (PFEMF) is an important part of the ultra high voltage alternating current (UHVAC) transmission line's electromagnetic environment. In this paper, the distribution of PFEMF was obtained by finite element method, and the influence of lines' configuration, vertical height and the distance between phases was discussed. Furthermore, the electrostatic induction was...
By analogy with Halbach permanent magnet (PM) array, a novel ironless trapezoid winding array (TWA) is designed to achieve a primarily single-sided and well sinusoidal magnetic field. After deriving the TWA's current density formula in Fourier series, via the magnetic vector potential we derive the analytical solution of its magnetic field, which is verified by ANSYS finite-element method.
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