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| Design and loss analysis of catheter pump motor based on FPCB winding |
| WANG Fangqun, QIAN Feng, GAO Yu, LI Zijian, WANG Shaojun |
| School of Electrical and Information Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
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Abstract Based on the characteristics of slotless brushless DC motor with small size, high power density and cogging torque, the slotless brushless micro DC motor for catheter pump was designed using flexible printed circuit board (FPCB) technology, and the loss analysis and optimal design of slotless brushless micro DC motor for catheter pump were conducted based on 3D multi-physical field coupling model analysis method. The results show that the copper loss of the slotless brushless micro DC motor for catheter pump accounts for about 88% of the whole motor loss, which is the main source of motor heating. In the temperature field simulation, the temperature change can change the motor loss and affect the motor output torque. In the flow field simulation model, the motor temperature can increase the human blood temperature and affect the blood compatibility. The flowing blood takes away part of the heat and reduces the motor temperature. The output torque of the pump motor with optimized winding is improved, and the loss is reduced.
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Received: 15 October 2021
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2024, Vol. 45 
