无轴承无刷直流电机研究现状及发展趋势

摘要

A bearingless brushless DC motor is a new type of high performance motor , which integrates the function of magnetic bearings into a brushless DC motor .It has the characteristic of no friction , no wear , high speed , long service life of the magnetic bearings , and also has the advantages of high efficiency , small volume, simple structure of the brushless DC motor , and it has a potential vast development and application prospects .In this paper , the motor structure of the bearingless brushless DC and the principle of suspension force generation were introduced .A comprehensive overview of the bearingless brushless DC motors was presented , with particular emphasis on the motor structure and the control strategy analysis .On the basis of the superiority and the existence problems of the bearingless brushless DC , the research development trend of the bearingless brushless DC motor was analyzed in this paper .The results provided the reference for the fur-ther study on the bearingless brushless DC motor.%无轴承无刷直流电机是一种高性能的新型电机，它将无刷直流电机和磁悬浮轴承功能集成一体，使其不仅具备磁轴承无摩擦、无磨损、高速度、寿命长等特点，还具有无刷直流电机的效率高、体积小、结构简单的优势，潜在发展和应用前景非常广阔。本文介绍无轴承无刷直流电机的结构特点、悬浮力产生的原理，从电机结构、控制策略方面分析了无轴承无刷直流电机的国内外发展现状，并根据无轴承无刷直流电机的优势及存在的问题，分析了未来无轴承无刷直流电机的研究发展趋势，为今后进一步开展无轴承无刷直流电机的研究提供参考。