Abstract
This paper presents a method for calculating the operating characteristics of permanent magnet (PM) generators based on the reluctance network analysis (RNA) method proposed by the authors. The PM generator used in the discussion has a distributed winding and an overhang structure in which the permanent magnet is longer than the stator's stack in the axial direction. In the analysis, the stator and rotor, gap, and the permanent magnet including the overhang are expressed as a simplified three-dimensional RNA model. The RNA model of the PM generator is combined with an external electric circuit and motion calculation blocks on a general-purpose circuit simulator called “SPICE.” We can readily calculate the characteristics of the PM generator using the combined model, including its transient state. The calculated values agree well with the measured ones.
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