Establishment of core dynamic hysteresis model under DC flux

Limitations of Jiles–Atherton models to study the effect of hysteresis in electrical steels under different excitation regimes

“…The parameters using DJAM are M s = 1.31 × 10 6 A/M, k = 54.17 A/M, c = 0.32, α = 8.24 × 10 −5 and a = 73.92 A/M, and in case of the IJAM are M s = 1.31 × 10 6 A/M, k = 68.32 A/M, c = 0.11, α = 3.166 × 10 −5 and a = 58.05 A/M. To simulate the hysteresis cycle of the AC with DC bias, the measured loop in Figure 8 is obtained at s = 0.9396 ( s is the proportion of dc flux ( B dc ) to ac flux ( B ac ), B ac = 0.9 T) (Wang and Liu, 2015). The same set of the major loop parameters has been used, and the estimated hysteresis loop can be seen in Figure 8(b).…”

“…This section examines how well the models can predict the behavior of materials when subjected to a combination of direct current (DC) and alternating current (AC) excitation. The data collected by Wang and Liu (2015) and Wang and Liu (2016) was used for this analysis. This data is for commercial electrical steel subjected to 5 Hz AC with and without a DC component.…”

“…This comparison demonstrates that the DJAM hysteresis model is accurate, as shown in Figure 9(a). In so-called CASE 2, a similar supply voltage to that of CASE 1 is used, with the addition of fifth harmonic components at 50 Hz: both left (Wang and Liu, 2015)] and (b) measured and simulated hysteresis loop via DJAM and IJAM at 5 Hz with DC bias using the parameter of the major loop [measured data (Wang and Liu, 2015] COMPEL 43,1 and right coils have the same phase. A comparison of the measured and simulated results reveals small differences, as can be seen in Figure 9(b).…”

“…Figure 8. (a) Measured and simulated hysteresis loop at 5 Hz without DC bias using DJAM and IJAM [measured data is taken from(Wang and Liu, 2015)] and (b) measured and simulated hysteresis loop via DJAM and IJAM at 5 Hz with DC bias using the parameter of the major loop [measured data(Wang and Liu, 2015] …”