Rotor vibration unbalance compensation control of a bearingless induction motor.
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| Title: | Rotor vibration unbalance compensation control of a bearingless induction motor. |
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| Authors: | Yang, Zebin1 (AUTHOR) zbyang@ujs.edu.cn, Jia, Peijie1 (AUTHOR), Sun, Xiaodong2 (AUTHOR), Mei, Haitao1 (AUTHOR) |
| Source: | International Transactions on Electrical Energy Systems. Aug2021, Vol. 31 Issue 8, p1-20. 20p. |
| Subject Terms: | *Rotor vibration, *Magnetic bearings, *Induction motors, *Algorithms, *Search algorithms, *Time-varying systems, *Mathematical models |
| Abstract: | Summary: To handle the unbalanced vibration caused by the centroid deviation in a bearingless induction motor (BL‐IM), a dynamic unbalanced compensation strategy is proposed. Based on the traditional minimum force suppression, the best compensation value can be searched by combining with coordinate system algorithm. Firstly, the generating principle of radial suspension force and the mechanism of rotor vibration are analyzed. Then the mathematical model of dynamic imbalance compensation signal is established. Secondly, a preset compensation signal is applied to the suspension winding. The effective compensation signal that can reduce the rotor displacement is determined by measuring and calculating the corresponding variation in the rotor displacement. The effective compensation value is input into the adaptive iterative algorithm to keep approaching to the optimal compensation value. In addition, the coordinate search algorithm is used to ensure the speed and accuracy of the compensation signal calculation in the time‐varying system, which can realize the effective suppression of rotor vibration. Finally, the compensation control method is simulated in Matlab/Simulink toolbox and tested on a prototype designed by our research group. Both simulation and experimental results show that the time of motor reaching steady state is obviously shortened, and the radial deviation of the rotor is reduced during the operation of the motor. The unbalanced compensation method can effectively and quickly suppress rotor vibration. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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| Abstract: | Summary: To handle the unbalanced vibration caused by the centroid deviation in a bearingless induction motor (BL‐IM), a dynamic unbalanced compensation strategy is proposed. Based on the traditional minimum force suppression, the best compensation value can be searched by combining with coordinate system algorithm. Firstly, the generating principle of radial suspension force and the mechanism of rotor vibration are analyzed. Then the mathematical model of dynamic imbalance compensation signal is established. Secondly, a preset compensation signal is applied to the suspension winding. The effective compensation signal that can reduce the rotor displacement is determined by measuring and calculating the corresponding variation in the rotor displacement. The effective compensation value is input into the adaptive iterative algorithm to keep approaching to the optimal compensation value. In addition, the coordinate search algorithm is used to ensure the speed and accuracy of the compensation signal calculation in the time‐varying system, which can realize the effective suppression of rotor vibration. Finally, the compensation control method is simulated in Matlab/Simulink toolbox and tested on a prototype designed by our research group. Both simulation and experimental results show that the time of motor reaching steady state is obviously shortened, and the radial deviation of the rotor is reduced during the operation of the motor. The unbalanced compensation method can effectively and quickly suppress rotor vibration. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 20507038 |
| DOI: | 10.1002/2050-7038.12953 |
