Accurate calculation of losses in amorphous alloy cores based on a dynamic Jiles-Atheron model under wide frequency and variable temperature operating conditions

•Stator core losses of HSAAPMSM under high-frequency and variable temperature conditions are accurately calculated.•The influence of temperature on the magnetization process is considered in the effective field of modified J-A model.•The field separation approach with Riemann Liouville fractional derivative is introduced for high-frequency conditions.•Hysteresis characteristics of 1 K101 under −50 °C to 150 °C and 10 Hz to 1000 Hz can be accurately simulated.•Losses of amorphous alloy 1 K101 under −50 °C to 150 °C and 10 Hz to 1000 Hz can be accurately simulated. The stator core of the high-speed amorphous alloy permanent magnet synchronous motor(HSAAPMSM）experiences significant temperature fluctuations due to exposure to a high-frequency alternating magnetic field. We introduce the dynamic Jiles-Atheron(J-A) model under wide frequency and variable temperature operating conditions to achieve accurate modeling for stator core loss. In contrast to previous modeling techniques, this approach does not rely on amount of experience data and laborious parameter identifications. The adaptive chaotic dung beetle optimization algorithm is applied to improve the effectiveness of parameter identification. The temperature-dependent static J-A model is modified into a dynamic J-A model by combining the field separation approach with the Riemann-Liouville (R-L) fractional derivative theory to enable the model's application under high-frequency operating circumstances. Finally, the model described in this study is verified through experimentation and can be used to precisely calculate the loss of amorphous alloy cores.