A Slot Optimization Method for Reducing Motor’s Additional Loss

doi:10.11985/2017.09.002

Abstract

Abstract:

As a simple and easy completing method, the changing slot structure is widely used in optimization of motor’s performances. The optimization of rotor slot aimed at reducing motor’s additional loss was studied in this paper. The relationship between dimensions of rotor slot and additional loss were analyzed in the first step. Then the set of dimensions for the minimum additional loss was obtained by function fitting. The other requirements of motor’s designs were also considered in the iterative calculation for the optimum geometry. This study could provide a reference for motor’s optimization in engineering practice.

Key words: Additional loss, slot optimization, finite element analysis

CLC Number:

TM315

Na Liang,Xiaohua Bao. A Slot Optimization Method for Reducing Motor’s Additional Loss[J]. Journal of Electrical Engineering, 2017, 12(9): 11-15.

Figures/Tables 11

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References 11

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电机参数	数值
额定功率/kW	1 000
额定电压/kV	10
定子外径/mm	850
定子内径/mm	540
转子外径/mm	536
铁心长度/mm	580
定子槽数（双层绕组）	60
转子槽数	47
极对数	2
硅钢片电导率/(S/m)	2.2×10⁶
导条电导率/(S/m)	4.7×10⁷

电机模型	定转子铁心/W	转子导条/W	总的附加损耗/W
优化前	3 065.7	8 745.4	11 811.1
优化后	3 195.0	6 134.7	9 329.7

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