This paper presents a method for calculating iron loss of a switched reluctance (SR) motor based on a reluctance network analysis (RNA). The RNA model of the SR motor consists of a multiple number of nonlinear reluctances and magnetic inductances which express magnetic hysteresis. The RNA model is combined with a motor drive circuit and motion calculation circuits in a general purpose circuit simulator "SPICE." By using the electromagnetic and motion coupled analysis model, dynamic characteristics including the iron loss can be calculated quickly and accurately. The validity of the proposed method is evaluated by comparing with measured values.
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