1. (1) W. Bauer and W. Amrhein, “Electrical Design Considerations for a Bearingless Axial-Force/Torque Motor”, IEEE Trans. Ind. Appl., vol. 50, no. 4, pp. 2512-2522 (2014)
2. (2) Jungmayr, G., Marth, E., Panholzer, M., Amrhein, W., Jeske, F., and Reisinger, M., “Design of a highly reliable fan with magnetic bearings”, Proceedings of the Institution of Mechanical Engineers: J Systems and Control Engineering, vol. 230, no. 4, pp. 361-369 (2016)
3. (3) H. Sugimoto, I. Shimura, and A. Chiba, “Principle and Test Results of Energy-Saving Effect of a Single-Drive Bearingless Motor in Cooling Fan Applications,” IEEJ Journal of Industry Applications, vol. 6, no. 6, pp.456-462 (2017)