摘要
针对微纳卫星飞轮用单圈磁钢无刷直流电机气隙磁密低且干扰磁密大的缺陷,提出了一种新型双圈磁钢构型的无刷直流电机。介绍了飞轮及新型无刷直流电机的结构和工作原理,基于等效面电流法建立新型无刷直流电机的数学模型,推导了气隙磁通密度公式。采用有限元法对有效气隙磁密和干扰磁密进行了磁密分析,结果表明,与传统无刷直流电机相比,新型无刷直流电机有效气隙磁密由0.45T提高到0.55T,气隙平顶宽度由54°拓宽到87°,干扰磁密由0.31T降低到0.065T,有效提升了电机的稳定性能和力矩输出性能,降低了功耗。
Aiming at the existing single-magnet brushless DC motor with the defects of low air gap magnetic density and large interference magnetic density of for micro-nano satellite momentum flywheel,a novel dual-magnet brushless DC motor was proposed.The structure of the momentum flywheel and the brushless DC motor are introduced,and the corresponded working principle are explained.The mathematical model of the novel brushless DC motor is established based on the equivalent surface current method,and the distribution of the air gap flux density is derived.The effective air gap flux density and interference air gap flux density are analyzed by the finite element method.The results shown that the effective air gap flux density of the novel brushless DC motor is increased from 0.45T to 0.55T,the interference air gap flux density is reduced from 0.31T to 0.065T,and the flat top width is widened from 54°to 87°which by compared with the traditional brushless DC motor.It shows that the novel structure motor effectively improves the stable performance and torque output performance of the motor,and reduces the power consumption.
作者
俞建荣
张业帅
马丽梅
刘强
YU Jian-rong;ZHANG Ye-shuai;MA Li-mei;LIU Qiang(Beijing Institute of Precision Electromagnetic Equipment and Advanced Measurement Technology,Beijing Institute of Petrochemical Technology,Beijing 102617,China)
出处
《机械设计与制造》
北大核心
2024年第10期34-37,42,共5页
Machinery Design & Manufacture
基金
北京市自然科学基金面上项目资助(3212004)
北京石油化工学院重要科研成果培育项目资助(BIPTACF-007)。
关键词
微纳卫星
新型无刷直流电机
等效面电流
有限元法
磁密分析
Micro-Nano Satellite
Novel Brushless DC Motor
Equivalent Surface Current
Finite Element Method
Magnetic Density Analysis
