A novel bearingless interior permanent magnet slice motor driven blood pump

A 2-pole bearingless interior permanent magnet (IPM) motor with slice rotor configuration is presented in this paper. A novel IPM rotor is designed considering direct and indirect operational specifications such as force constant, torque constant, axial/radial stiffness and cogging torque. Cogging t...

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Bibliographic Details
Published in:Mechatronics (Oxford) 2023-04, Vol.90, p.102946, Article 102946
Main Authors: Kant, Krishan, Weinreb, Benjamin S., Hegy, Michael, Speakman, Jeff, Gartner, Mark, Trumper, David L.
Format: Article
Language:English
Subjects:
Bearingless motor
Blood pump
Buried magnets
Finite element simulation
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Summary:A 2-pole bearingless interior permanent magnet (IPM) motor with slice rotor configuration is presented in this paper. A novel IPM rotor is designed considering direct and indirect operational specifications such as force constant, torque constant, axial/radial stiffness and cogging torque. Cogging torque and its resulting vibrations affect motor and levitation operation significantly. Hence, various rotor configurations are simulated using the finite element method to develop a topology that minimizes these phenomena. The final topology is tested for closed-loop levitation and speed control. The motor is also tested for its intended application as a blood pump. A mock circulatory loop is developed to measure the performance of the pump. The simulation results, experimental control system performance and pump performance results are shown and explained in the paper. [Display omitted]
ISSN:0957-4158
1873-4006
DOI:10.1016/j.mechatronics.2023.102946