轴流泵电机属于一种永磁微特电机，具有体积小、流量高以及稳定性好的运行特性，其在人工心脏上的应用日益广泛。一般的无刷直流电机绕组常采用星形接法，而轴流泵电机通常将绕组设计为无铁心绕组，其绕组一般采用三角形接法。当对轴流泵电机进行无位置传感器控制时，用于星形接法的传统反电动势过零检测方法不再适用。因此,提出一种新的反电动势过零检测方法实现轴流泵电机无位置传感器控制，试验结果证明该方法适用于三角形接法的轴流泵电机。

Axial flow pump motor is a type of permanent magnet micromotor, which has small volume, high flow rate and good stability. It is more widely used in artificial heart. The winding of general brushless DC motor often adopts star connection method, while the winding of axial flow pump motor is usually designed as coreless winding, so its winding generally adopts triangular connection method. When the sensorless control is applied to the axial flow pump motor, the traditional back EMF zero crossing detection method used for star connection method is no longer applicable. Therefore, a new back EMF zero crossing detection method is proposed to realize the sensorless control of the axial flow pump motor. The experimental results show that this method is suitable for the axial flow pump motor with triangular connection.

经皮心室辅助装置关键技术攻关及工程化机样机研制(22S31907300)