磁路法与有限元法相结合的磁悬浮人工心脏泵驱动电机设计∗

摘要

A kind of brushless DC motor which can be used for axial-flow maglev artificial heart pump was introduced. The motor has characteristics of large air gap and high-speed. The motor body was developed by the method of combining the traditional magnetic circuit design and finite assistant analysis ( FEA ) . The experimental results shows that the motor can run stably, has high speed and low noise, dissipate less hate, has wide speed regulation at limited-low voltage. The speed curve is approximately a straight line below the no-load speed point. This design approach is proved to be reasonable and effective.%介绍了一种可用于轴流式磁悬浮人工心脏泵的无槽式永磁无刷直流电动机。电机具有大气隙、高转速特点。电机本体采用经典磁路法和有限元辅助分析相结合的方法研制而成。试验结果表明，电机运行平稳、转速高、噪声低、发热小，有限低电压下调速范围宽，调速曲线在不超过空载转速范围内近似一条直线，证明了设计方法合理有效。