当交流电机气隙磁通发生饱和时，常规的自适应速度估算法无法避免由于电感量的非线性变化带来的影响。
When the air-gap flux of the induction motor is saturated, the conventional adaptive speed estimator cannot avoid the influence of the non-linear inductance variation.
磁粉心具有较高的饱和磁通密度和较好的直流偏磁动态线性。
Powder core has high saturation flux density and excellent motion linearity of DC bias.
变压器外部故障切除后，暂态磁通可能超过变压器铁心的饱和点，从而产生一定的恢复性涌流。
After an external fault of transformer is cleared, the transient flux may enter into the saturation region, and a recovery inrush may be produced.
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