柔性PCB绕组径向磁通微型永磁电机设计

采用无槽结构的高速微型永磁电机在检测设备、医疗器械等方面应用广泛，但无槽电机绕组制作复杂，使用绕组印制技术可以简化绕组的制作过程。目前已有的印制技术多以刚性印制电路板（PCB）为载体应用于轴向磁通电机，对于径向磁通的高速电机来说，刚性PCB已无法满足绕组沿圆周方向分布的需求，柔性PCB绕组应运而生，不过目前还没有完整的柔性PCB绕组电机设计方案。因此，设计了一款高速微型柔性PCB绕组电机，针对柔性PCB绕组特有的缠绕不等距问题，提出了使用平均半径的解决方案，并通过仿真对电机进行了分析。结果表明，平均半径法解决了绕组缠绕不等距的问题，所设计的柔性PCB绕组电机能达到电机技术要求且具有良好的热稳定性。

Design of Radial Flux Permanent Magnet Micromotor with Flexible PCB Winding

High-speed permanent magnet micromotor with slotless structure is widely used in testing equipment and medical equipment. However, the production process of slotless motor winding is complicated, and the production process of winding can be simplified by using winding printing technology. At present, existing printing technologies are mostly applied to motors with axial flux using rigid printed circuit board (PCB) as carrier. For high-speed motor with radial flux, rigid PCB can hardly meet the requirement for winding distribution along the circumference. Flexible PCB winding comes into being, but there is no complete design scheme of flexible PCB winding motor at present. Therefore, a high-speed micromotor with flexible PCB winding is designed. In order to solve the problem of unequal winding of flexible PCB winding, an average radius method is proposed and the motor is analyzed by simulation. The results show that the average radius method solve the problem of unequal winding of flexible PCB winding, and the desigred flexible PCB winding motor can meet the techaical requirements of the motor and has good thermal stability.