A New Method for Reducing Cogging Torque of Brushless DC Motor in Integrated Motor Propulsor

doi:10.7652/xjtuxb201605023

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A New Method for Reducing Cogging Torque of Brushless DC Motor in Integrated Motor Propulsor

更新时间：2025-05-08

- A New Method for Reducing Cogging Torque of Brushless DC Motor in Integrated Motor Propulsor
- Vol. 50, Issue 5, Pages: 151-156(2016)
- 作者机构：
  
  1. 西北工业大学航海学院,西安,710072
  2. 西北工业大学水下航行器研究所,西安,710072
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201605023
  CLC： TM351
- Online First：10 May 2016，
  
  Published：2016
- 稿件说明：
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A New Method for Reducing Cogging Torque of Brushless DC Motor in Integrated Motor Propulsor[J]. 2016, 50(5): 151-156.
DOI：

A New Method for Reducing Cogging Torque of Brushless DC Motor in Integrated Motor Propulsor[J]. 2016, 50(5): 151-156. DOI： 10.7652/xjtuxb201605023.

摘要

为消减集成电机推进器用无刷直流电机存在的齿槽转矩以保证整个推进器的性能

综合考虑了推进器的性能要求、尺寸要求、加工工艺等实际情况

以消减齿槽转矩并尽可能减小其对电机输出转矩的影响为目标

提出了一种槽口倾斜综合优化方法。采用Box-Behnken设计了实验

并利用响应面法处理实验数据

得到了齿槽槽口倾斜角度、极弧系数和槽口宽度3个因素间关系的数学模型

从而计算出了使齿槽转矩最小的槽口倾斜角度、极弧系数和槽口宽度最优解组合。最后

用电磁场分析软件infolytica/MagNet求解了各个实验点的参数值

并验证了最优组合预测值。计算结果表明

对于所设计的功率为2 kW的集成电机推进器用无刷直流电机

优化后的槽口倾斜角度为5°

极弧系数为0.65

槽口宽度为3 mm

采用此优化参数可使电机齿槽转矩减小28.69%。

Abstract

The cogging torque of brushless DC motor for integrated motor propulsor can seriously affect the performance of integrated motor propulsor. To deal with this problem

this paper considers the requirements of the propulsor's size

processing technology and performance

and presents a slot opening skew comprehensive optimization method to reduce the cogging torque and minimize its influence on the output torque. Using Box-Behnken to design experiments and response surface methodology(RSM)to process experimental data

a mathematical model about the relationship among the angle of slot opening skew

pole-arc coefficient and slot opening width is obtained. Moreover

the optimal combination of the slot opening skew angle

pole-arc coefficient and slot opening width is determined. The electromagnetic field analysis software infolytica/MagNet is used to solve the values at various experimental sites and verify the optimal combination forecast. The results show that for the 2 kW motor designed for this study

when the angle of slot opening skew is 5°

the pole-arc coefficient is 0.65 and the slot opening width is 3 mm

the cogging torque is reduced by about 28.69%.

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Keywords

references

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WANG Xiuhe, YANG Yubo, DING Tingting, et al. The method for reducing cogging torque by suitable selection of pole-arc coefficient in solid-rotor PM synchronous motors [J]. Proceedings of the CSEE, 2005, 25(15): 146-149.

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DONG Shizhen, MA Jun, SHEN Jianxin. Optimal slot opening design for cogging torque reduction of PM motor [J]. Micromotors, 2007, 40(12): 1-3.

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