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    • 11. 发明授权
    • Asymmetric minor hysteresis loop model and circuit simulator including the same
    • 非对称小磁滞回线模型和电路模拟器包括相同
    • US07502723B1
    • 2009-03-10
    • US11216008
    • 2005-09-01
    • Michael Thomas Engelhardt
    • Michael Thomas Engelhardt
    • G06F7/60G06F17/50
    • G06F17/5036
    • The present disclosure relates to simulating inductors wound on a ferromagnetic core as the magnetic material saturates. In one application, the present disclosure is advantageously used to model the asymmetric minor hysteresis loops commonly traversed by the output inductor of a switch mode power supply. An advantage of the subject matter of the disclosure is that it allows practical nonlinear inductors to be modeled in a computationally lightweight manner without conventional non-physical behavior under asymmetric minor hysteresis loop traversals. The disclosure is also conveniently applicable to practical ferromagnetic core materials because, in one particular implementation, the input parameters to the model are the core's coercive force (Hc), remnant magnetization flux density (Br), and saturation flux density (Bs).
    • 本公开涉及当磁性材料饱和时模拟缠绕在铁磁芯上的电感器。 在一个应用中,本公开有利地用于对通常由开关模式电源的输出电感器穿过的非对称次级磁滞回线进行建模。 本公开的主题的优点在于,其允许在非对称的小磁滞回线遍历下,以计算轻量级的方式对实际的非线性电感进行建模而无需常规的非物理行为。 本发明也适用于实际的铁磁芯材料,因为在一个具体实施方式中,模型的输入参数是核心的矫顽力(Hc),剩余磁通密度(Br)和饱和磁通密度(Bs)。