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  2. Hysteresis - Wikipedia

    en.wikipedia.org/wiki/Hysteresis

    The low coercivity minimizes the energy loss associated with hysteresis, as the magnetic field periodically reverses in the presence of an alternating current. The low energy loss during a hysteresis loop is the reason why soft iron is used for transformer cores and electric motors.

  3. Magnetic hysteresis - Wikipedia

    en.wikipedia.org/wiki/Magnetic_hysteresis

    The response of the magnetic moment to a magnetic field boosts the response of the coil wrapped around it. Low coercivity reduces that energy loss associated with hysteresis. Magnetic hysteresis material (soft nickel-iron rods) has been used in damping the angular motion of satellites in low Earth orbit since the dawn of the space age. [5]

  4. Hysteresivity - Wikipedia

    en.wikipedia.org/wiki/Hysteresivity

    Hysteresivity derives from “hysteresis”, meaning “lag”. It is the tendency to react slowly to an outside force, or to not return completely to its original state. Whereas the area within a hysteresis loop represents energy dissipated to heat and is an extensive quantity with units of energy, the hysteresivity represents the fraction of the elastic energy that is lost to heat, and is an ...

  5. Magnetic core - Wikipedia

    en.wikipedia.org/wiki/Magnetic_core

    This equation shows that the amount of energy lost in the material in one cycle of the applied field is proportional to the area inside the hysteresis loop. Since the energy lost in each cycle is constant, hysteresis power losses increase proportionally with frequency. [13] The final equation for the hysteresis power loss is [12]

  6. Jiles–Atherton model - Wikipedia

    en.wikipedia.org/wiki/Jiles–Atherton_model

    This is one of the most popular models of magnetic hysteresis. Its main advantage is the fact that this model enables connection with physical parameters of the magnetic material. [2] Jiles–Atherton model enables calculation of minor and major hysteresis loops. [1] The original Jiles–Atherton model is suitable only for isotropic materials. [1]

  7. Stoner–Wohlfarth model - Wikipedia

    en.wikipedia.org/wiki/Stoner–Wohlfarth_model

    Usually only the hysteresis loop is plotted; the energy maxima are only of interest if the effect of thermal fluctuations is calculated. [1] The Stoner–Wohlfarth model is a classic example of magnetic hysteresis. The loop is symmetric (by a 180 ° rotation) about the origin and jumps occur at h = ± h s, where h s is known as the switching field.

  8. Magnetostriction - Wikipedia

    en.wikipedia.org/wiki/Magnetostriction

    Magnetostrictive hysteresis loop of Mn-Zn ferrite for power applications measured by semiconductor strain gauges. Like flux density, the magnetostriction also exhibits hysteresis versus the strength of the magnetizing field. The shape of this hysteresis loop (called "dragonfly loop") can be reproduced using the Jiles-Atherton model. [4]

  9. Losses in electrical systems - Wikipedia

    en.wikipedia.org/wiki/Losses_in_electrical_systems

    In an electrical or electronic circuit or power system part of the energy in play is dissipated by unwanted effects, including energy lost by unwanted heating of resistive components (electricity is also used for the intention of heating, which is not a loss), the effect of parasitic elements (resistance, capacitance, and inductance), skin effect, losses in the windings and cores of ...