residual flux density


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residual flux density

[rə′zij·ə·wəl ′fləks ‚den·səd·ē]
(electromagnetism)
The magnetic flux density at which the magnetizing force is zero when the material is in a symmetrically and cyclically magnetized condition. Also known as residual induction; residual magnetic induction; residual magnetism.
References in periodicals archive ?
Parameter Symbol Value Number of turns [N.sub.1] 528 Height of the secondary yoke [h.sub.b] 10 mm Width of the motor L 100 mm Pole pitch [tau] 46.5 mm Residual flux density Br 1.2 Tesla Width of the PM [[tau].sub.p] 40 mm Height of the PM hm 5 mm Height of the winding hc 12 mm Air gap length g 0.5 mm Width of the winding [w.sub.c] 15.5 mm Relative permeability of PM [[mu].sub.r] 1.05 TABLE II.
where [[mu].sub.r] is the permanent-magnet's recoil relative permeability, [B.sub.r] the permanent-magnet residual flux density, [K.sub.d] the leakage flux factor, [K.sub.f] = [B.sub.gpk]/[B.sub.g] the peak value corrected factor of air-gap flux density in the AFPM machine's radial direction, and [K.sub.c] the Carter factor.
[sup.[mu]]r is the recoil relative permeability of the magnet, [B.sub.r] is the residual flux density of the PM material, [K.sub.d] is the leakage flux factor, [K.sub.c] is the Carter factor, [K.sub.f] = [B.sub.gpk]/[B.sub.g] is the peak value corrected factor of air gap flux density in radial direction of the AFPM motor.
Magnetic particles with higher coercive force and residual flux density are appropriate realizing a higher resolution of the magnetized patterns for the Gate-Magnetization method.
where [r.sub.i] and [r.sub.m] are the radii of the high-speed mover and the PMs on the high-speed mover respectively, and [B.sub.res] is the residual flux density of PMs.
We have found that to reduce the residual flux density affecting the Hall sensor under normal operation of the loaded 3-phase MV cable the application of a magnetic screening gives satisfactory results.
[[mu].sub.r] is the recoil relative permeability of the magnet, [B.sub.r] is the residual flux density of the PM material, [K.sub.d] is the leakage flux factor, [K.sub.c] is the Carter factor, [K.sub.f] = [B.sub.gpk]/[B.sub.g] is the peak value corrected factor of air gap flux density in radial direction of the AFPM motor.