Study of Electric Field Induced by Rotating Magnetic Dipole

doi:10.3969/j.issn.1000-1093.2014.02.023

Abstract

Abstract: In order to study the electric field induced by rotating magnetic propeller, a mathematical model is proposed to calculate the electromagnetic signals induced by a rotating magnetic dipole based on the Faraday’s law of electromagnetic induction. An experiment is done in the laboratory pool to test the analytical method. The results show that the signal’s order of magnitude is proportional to the rotational frequency and magnetic moment, its frequency is consistent with the rotational frequency, and the phase differences of three axis are π/2 and π, respectively. The research proves that the electric field is a part of shaft-rate electric field of ship, which complements the mechanism of production of the shaft-rate electric field, and provides a theoretical basis for the detection or control of ship’s shaft-rate electric field.

Key words: electromagnetics, magnetic propeller, magnetic dipole, constant rotation, induced electric field, law of electromagnetic induction

CLC Number:

O441.1

ZHANG Jia-wei, GONG Shen-guang, JIANG Run-xiang, CHEN Cong. Study of Electric Field Induced by Rotating Magnetic Dipole[J]. Acta Armamentarii, 2014, 35(2): 285-288.

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