Iron loss calculation under PWM inverter switching for SiFe steel materials
Iron loss calculation under PWM inverter switching for SiFe steel materials
复制标题
SiFe钢材料PWM逆变开关下的铁损计算
DOI：
10.1109/ecce.2019.8912818
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
N. Matsui
中科院分区：
文献类型：
--
作者：
H. Matsumori;Toshihisa Shimizu;T. Kosaka;N. Matsui
本文提出了一种硅铁钢材料在PWM开关高频电流涟漪下铁损的计算方法。PWM开关在BH平面上产生动态小回路，这导致铁损。本文采用改进的Bertotti物理模型计算了硅铁钢动态小回线的铁损。将计算的铁损值与测量的铁损值进行比较。该模型预测铁损在可接受的误差范围内。然而，当比较每个动态小回路的铁损值时，发现计算误差。计算误差的原因是，如果磁通密度偏差不同，即使直流偏置具有相同的值，测量的铁损也会变化。不仅改进的Bertotti物理模型存在计算误差，改进的Steinmetz方程等方法也存在计算误差，因为这些方法没有考虑磁通密度偏差和直流偏置特性。
This paper presents an iron loss calculation method for SiFe steel material under high-frequency current ripple due to PWM switching. The PWM switching produces dynamic minor loops on the BH plane, which cause iron loss. In this study, the improved Bertotti's physical model is used for iron loss calculation for dynamic minor loops in SiFe steel material. The calculated iron loss values are compared with the measured iron loss values. The model predicts the iron loss within an acceptable error. However, calculation errors are found when comparing the iron loss value for each dynamic minor loop. The reason for the calculation errors is that the measured iron loss varies if the flux density bias is different, even if the DC-bias has the same value. The calculation error occurs not only in the improved Bertotti's physical model but also in other methods such as improved Steinmetz equation because these methods do not take into account the flux density bias and/or the DC-bias characteristic.