【摘要】 针对影响离心血泵用电机噪声与振动的气隙磁场和齿槽转矩,对不同极槽配合和不同永磁体充磁方式的永磁无刷直流电机进行了对比分析。首先,在满足离心血泵性能要求的前提下,对电机进行了初步设计,确定了电机的主要技术参数和尺寸。接着,借助有限元分析软件,对比分析了不同极槽配合电机的气隙磁场,对比分析了不同永磁体充磁方式电机的气隙磁场和齿槽转矩。分析结果表明,4极12槽采用平行充磁永磁体充磁方式的电机电磁特性较好,齿槽转矩较小,性能较优。最后,确定了电机的具体参数,完成了电机的优化设计。这些研究为离心血泵用电机的低噪音设计提供了一定参考。更多还原

【Abstract】 Aiming at the air-gap magnetic field and cogging torque that affect the noise and vibration of the motor for the centrifugal blood pump, the permanent magnet brushless DC motors with different pole-slot coordination and different methods of permanent magnets magnetization were comparative analyzed. Firstly, on the premise of meeting the performance requirements of the centrifugal blood pump, the motor was preliminarily designed, and the main technical parameters and dimensions of the motor were determined. Then, the finite element analysis software was used to compare and analyze the air-gap magnetic field of motors with different pole-slot coordination and the air-gap magnetic field and cogging torque of motors with different types of permanent magnet magnetization. The analysis results show that the motor with 4-pole 12-slot and parallel magnetizing has better electromagnetic characteristics, smaller cogging torque and better performance. Finally, the specific parameters of the motor were determined, and the optimal design of the motor was realized. These studies provide some references for the low-noise design of the motor for the centrifugal blood pump.更多还原