High-Speed Iron Loss Calculation of Permanent Magnet Synchronous Motor Combining Reluctance Network Analysis and One-Dimensional Magnetic Circuit Models Considering Dynamic Hysteresis Behavior

Quantitative analysis of the iron loss taking the dynamic hysteresis behavior into account is essential to the development of high-efficiency electric machines. In a previous paper, a novel magnetic circuit model incorporating a play model and a Cauer circuit was proposed. It was demonstrated that this magnetic circuit model can accurately and fast calculate the hysteresis loops and the iron loss considering carrier harmonics under PWM excitation for magnetic reactors made of several kinds of core materials. This paper describes that the iron loss of a permanent magnet synchronous motor (PMSM) driven by a PWM converter is calculated with high-accuracy and high-speed by combining a reluctance network analysis (RNA) model of an entire PMSM and a one-dimensional (1-D) magnetic circuit model representing the dynamic hysteresis characteristics in each element of an RNA model.