Core loss


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1.(Elec.) Energy wasted by hysteresis or eddy currents in the core of an armature, transformer, etc.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Core income rose by 235 percent to P220 million against core loss of P163 million in 2018.
The Boeing Company [NYSE: BA] reported second-quarter revenue of $15.8 billion, GAAP loss per share of ($5.21) and core loss per share (non-GAAP)* of ($5.82), reflecting the previously announced 737 MAX charge (which reduced revenue by $5.6 billion and earnings by $8.74 per share) as well as lower 737 deliveries partially offset by higher defense and services volume (Table 1).
The company posted GAAP loss per share of ($5.21) and core loss per share (non-GAAP)* of ($5.82), as well as lower 737 deliveries partially offset by higher defence and services volume.
where [l.sub.m] -Magnetic path length [cm], [beta] - Core loss exponent (for ferrite 2,6-2,7), [K.sub.fe] - parameter representing specific volume losses of material depending on saturation and switching frequency [W/[cm.sup.3]].
The unique properties of soft magnetic composites are very low eddy current loss, 3D isotropic ferromagnetic behavior, low total core loss at high and medium frequencies, and possibilities for improved thermal characteristics.
* Corporate & Other's core loss of $6 million was substantially improved from the $60 million loss in the prior-year period.
Operating performance moderately improved for P/C (re)insurers during the first half of the year thanks to improved core loss ratios, lower catastrophe-related losses and lower taxes along with favorable movement in loss reserves.
Where, [[mu].sup.rm] is the relative permeability of the magnet, [[mu].sub.0] is the permeability of air, [l.sub.g] and [l.sub.m] are air-gap and magnet thicknesses, [T.sub.ph] is stator turns/phase, I is the current in the coil, [[mu].sub.rm] is the relative permeability of the magnet, [A.sub.g] and [A.sub.m] are air-gap and magnet areas, B is the air-gap flux density, [B.sub.r] is the magnet remnant flux density, k is the leakage factor, [K.sub.c] and [K.sub.h] are core loss coefficients, [P.sub.c] and [P.sub.h] are eddy current and hysteresis losses in steel and [B.sub.m] is the magnet flux density.
The power loss generated from the inductor consists of the copper loss [P.sub.cu] and the core loss [P.sub.core].
Based on the magnetic-thermal coupling analysis of high-speed PM brushless DC motor, Xiaojun Chen optimized the design of the high-speed PM brushless DC motor by using genetic algorithm, and effectively reduced the core loss and significantly improved running efficiency of the motor[24].
Therefore, copper losses can be neglected and the power loss in the transformer during this test is entirely due to the core loss. On the other hand, the short circuit test was performed by applying rated current at the primary side, with the secondary windings shorted.