基于分数槽的人工心脏用永磁无刷直流电动机设计

发布时间：2018-04-15 03:14

本文选题：人工心脏 + 永磁无刷直流电动机　；参考：《微特电机》2014年12期

【摘要】：基于人工心脏用电机的可植入性强、高血液相容性的特殊要求,提出了一种新型的应用于人工心脏的无轴承永磁无刷直流电动机的设计方案。利用图示法和公式法分析了分数槽绕组降低永磁电机齿槽转矩的机理,在先前研制的12/4整数槽电机的基础上,采用6/4分数槽绕组结构进一步降低齿槽转矩,应用Ansoft有限元软件进行两种电机模型的电磁场性能对比分析,仿真结果表明,新设计的6/4分数槽绕组电机,齿槽转矩脉动降为原先电机的10.0%,反电动势平顶宽度增加30.0%。基于人体血液循环系统的水力模拟实验表明,在额定转速下分数槽电机效率提高11.3%,进出口平均压差增大12.9%。
[Abstract]:Based on the special requirements of implantable motor and high blood compatibility for artificial heart, a new design scheme of bearingless permanent magnet brushless DC motor for artificial heart is proposed.The mechanism of reducing slot torque of permanent magnet motor with fractional slot winding is analyzed by means of graphic method and formula method. On the basis of the previously developed 12 / 4 integer slot motor, a 6 / 4 fractional slot winding structure is adopted to further reduce the slot torque.Ansoft finite element software is used to compare and analyze the electromagnetic properties of the two motor models. The simulation results show that the torque ripple of the newly designed 6 / 4 fractional slot winding motor is reduced to 10.0 of the original motor, and the flat-top width of the backEMF increases by 30.0.The hydraulic simulation experiment based on human blood circulation system shows that the efficiency of fractional slot motor is increased by 11.3 and the average pressure difference of import and export increases by 12.9 at rated speed.
【作者单位】：江苏大学;
【基金】：国家自然基金项目(30900289) 江苏高校优势学科建设工程资助项目江苏省高校自然科学研究项目(09KJB310003) 江苏大学高级人才启用基金项目(08JDG023)
【分类号】：TM33

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