一种新型无轴承磁通切换电机原理及其实现

发布时间：2018-10-21 08:56

【摘要】：由于转子无永磁体、制造成本低,无轴承磁通切换电机在医疗卫生、生化反应等需要一次性抛弃或需要处理高温流体等应用场合具有独特优势。该文在分析了传统无轴承磁通切换电机的工作原理基础上,探究悬浮力与转子转角及气隙之间的关系,结果表明其悬浮力特性畸变严重,控制困难。针对该问题,文中研究了一种转子交错并列式的新型结构,理论分析表明该结构可有效消除悬浮力中大量的偶次谐波及直流分量,从而达到优化悬浮力、简化控制的目的。在此基础上,推导了悬浮力数学模型,并进行了有限元仿真对比分析,研究结果验证了该新型结构对悬浮力优化效果以及控制算法的正确性,且悬浮力与转矩之间具有较好的解耦控制效果。最后,研制了一台样机,对电机转矩相关性能进行了实验验证和分析,成功实现了稳定悬浮。
[Abstract]:Because the rotor has no permanent magnet and low manufacturing cost, the bearingless flux switching motor has unique advantages in medical, biochemical reaction and other applications such as disposable abandonment or need to deal with high-temperature fluid. Based on the analysis of the working principle of the traditional bearingless flux switching motor, the relationship between the suspension force and the rotor rotation angle and air gap is explored. The results show that the suspension force characteristic distortion is serious and the control is difficult. To solve this problem, a new type of rotor staggered parallel structure is studied in this paper. Theoretical analysis shows that the structure can effectively eliminate a large number of even harmonics and DC components in the suspension force, so as to optimize the suspension force and simplify the control. On this basis, the mathematical model of suspension force is derived, and the finite element simulation and contrast analysis are carried out. The research results verify the effectiveness of the new structure to the suspension force optimization and the correctness of the control algorithm. And the suspension force and torque have better decoupling control effect. Finally, a prototype is developed, and the torque related performance of the motor is verified and analyzed experimentally, and the stable suspension is successfully realized.
【作者单位】：南京航空航天大学;南京工业职业技术学院;
【分类号】：TM35

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