一种定子连体双转子同步并行直驱永磁电机

A Parallel Direct-Driven Permanent Magnet Synchronous Motor with Stator Connected Dual-Rotors Synchronous

提出一种定子连体双转子同步并行直驱永磁电机,用于双螺杆泵、挤压类负载并行对驱机械装备中,该电机取消传动齿轮等驱动设备,解决了动密封问题,可保证负载并行两轴同步性,系统效率得到提升。文中阐述定子连体双转子同步并行直驱永磁电机基本结构与运行机理;提出双转子之间区域为同步区,利用等效磁路法详细分析双转子不同位置时同步区磁路特点及电机电磁关系;提出电机设计方法,分析同步区对电机性能影响。设计制造一台电机进行仿真与实验研究,实验结果表明,所提电机达到直驱负载要求,较原有驱动电机具有效率更高、可靠性更好、密封更完善、体积更小、同步性更高的优势。

A parallel direct-driven permanent magnet synchronous motor with stator connected dual-rotors synchronous is proposed, used in twin screw pump and extrusion load parallel drive mechanical equipment. The motor removes driving equipment such as driving gear, solves the problem of dynamic seal, ensures load parallel two–shaft synchronization, and improves system efficiency. This paper presents the basic structure and operation mechanism of this motor, and proposes the area between two rotors called synchronous region. Meanwhile, according to the equivalent magnetic circuit method, this paper analyzes the characteristics of the magnetic circuit in the synchronous region and the electromagnetic relationship of the motor in detail when the two rotors in different positions. The design method of motor is then put forward, and the influence of synchronous region on motor performance is analyzed. A motor is designed and manufactured for simulation and experimental study. The results indicate that the proposed motor meets the requirements of direct-driven load. Compared with the original drive motor, it has the advantages of higher efficiency, better reliability, better sealing, smaller volume and higher synchronization.