Analytical Study on Core Loss Reduction of Segmented Stator Core Motor in Consideration of Rolling Direction of Nonoriented Electrical Steel Sheet

被引：7

作者：

Soda, Naoya ^{[1
]}

Hayashi, Naoki ^{[2
]}

Enokizono, Masato ^{[3
]}

机构：

[1] Ibaraki Univ, Dept Elect & Elect Engn, Hitachi, Ibaraki 3168511, Japan

[2] Ibaraki Univ, Hitachi, Ibaraki 3168511, Japan

[3] Vector Magnet Characterist Tech Lab, Oita 8790442, Japan

来源：

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2021年 / 57卷 / 05期

关键词：

Stator cores; Core loss; Magnetic cores; Permanent magnet motors; Steel; Magnetic hysteresis; Perpendicular magnetic anisotropy; Enokizono & Soda (E&S) model; finite-element method; nonoriented electrical steel sheet; rolling direction; segmented core; surface-mounted permanent magnet (SPM) motor; teeth shape; vector magnetic properties; MAGNETIC CHARACTERISTIC ANALYSIS; DESIGN;

D O I：

10.1109/TIA.2021.3091947

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This article proposes the core loss reduction of a surface-mounted permanent magnet motor with a segmented stator core. First, it is shown that the core loss of a motor is decreased by the segmentation of a stator core made of a nonoriented electrical steel sheet. The nonoriented electrical steel sheet used as the segmented stator core has an anisotropy, which is easy to magnetize in the rolling direction. Therefore, it is important to investigate the core loss of the segmented stator core in consideration of the rolling direction of the electrical steel sheet. The rolling direction of the steel sheet can be taken into consideration in magnetic field analysis by using the Enokizono & Soda (E&S) model, which is one of the vector magnetic property utilization techniques. Accordingly, the finite-element method, which introduced the E&S model, is used to evaluate the core loss of the motor. Second, the core loss of the segmented stator core is further reduced by applying a corner radius to each tooth root. Finally, the relation between the core loss and the rolling direction in the segmented stator core applying corner radius is investigated.

引用

页码：4745 / 4753

页数：9