b-h curve meaning in Chinese

磁化曲线

In the models , the iron core nonlinearly of the traction transformer and the magnetic hysteresis effect without the b - h curve are considered . having tested by digital simulation , the winding parameter has not changed in the state of external fault or magnetizing inrush etc . but the winding parameter has obviously changed in state of inter fault or inter - turn fault . ( 3 ) the rules three phases converted to two phases of traction transformer in electric railways are developed in this paper
（ 3 ）利用牵引变压器磁链平衡方程，建立了基于系统辨识理论的双绕组单相接线牵引变压器、阻抗匹配平衡牵引变压器及scott （斯科特）接线牵引变压器的“灰箱”模型，该模型考虑了牵引变压器铁芯非线性和磁滞效应，但又不直接反映在模型中，并且无需铁芯的b - h曲线数据。