单相无刷直流电机的设计分析与建模仿真

doi:10.16180/j.cnki.issn1007-7820.2022.03.011

Abstract

Abstract:

Research on the structure design and driving mode of single-phase brushless DC motor is carried out in this study. The basic equation of the motor under ideal working conditions is derived, and the design scheme of the motor is determined according to the actual needs of the project and combined with the design principles of the brushless DC motor. A single phase brushless DC motor with rated power of 38 W and rated speed of 750 rpm is designed using the summarized design scheme. The effect of the gradient air gap on the starting performance and the torque of the gear groove is analyzed, and the optimal air gap length is determined. By comparing the advantages and disadvantages of unipolar winding and bipolar winding form, the winding form is determined, and the number of turns is determined by combining the traditional motor design formula. The rationality of the design scheme is verified by the finite element method. According to the dynamic mathematical model of the motor, the model of the motor system is established in the Simulink environment, and the curves of the motor speed and torque are obtained by simulation. The simulation results are consistent with the theoretical analysis, which verifies the rationality of the motor design scheme and the validity of the motor model.

Key words: single-phase brushless DC motors, Simulink, performance analysis, mathematical modelling, design of electrical motor, tapered air-gap, cogging torque, modeling and simulation, finite element analysis

CLC Number:

TN02

Xuanfeng SHANGGUAN,Tingyu YANG,Jinsong WEI,Yongjian LIU. Design Analysis and Modeling Simulation of Brushless DC Motor[J].Electronic Science and Technology, 2022, 35(3): 71-78.

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References 20

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参数	数值
额定功率/W	38
额定电压/V	24
额定转速/r·min^-1	750
定子极数	4

偏移量X/mm	起动转矩/N·m
0.0	0.000
0.5	1.176
0.8	1.214
1.0	1.222
1.2	1.262
1.5	1.243

参数	数值
定子外径/mm	93
定子内径/mm	30
定子齿角度/(°)	87
轴向长度/mm	32
最小气隙长度/mm	0.5
定子偏移量/mm	1
永磁体厚度/mm	3
转子内径/mm	96
转子外径/mm	107
绕组匝数/匝	25

Design Analysis and Modeling Simulation of Brushless DC Motor

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