期刊
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
卷 68, 期 8, 页码 6547-6559出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2020.3003632
关键词
Rotors; Notch filters; Vibrations; Velocity control; Switches; Magnetic levitation; Force; Active magnetic bearings (AMBs); notch filter; synchronous unbalance vibration; unbalance compensation; variable angle compensation
资金
- National Key R&D Program of China [2018YFB0905500]
- National Natural Science Foundation of China [11632015]
The study focused on suppressing synchronous unbalance vibration in active magnetic bearing systems using unbalance compensation strategies. A method utilizing a variable angle compensation algorithm to achieve real-time rotor position unbalance compensation was proposed to improve system stability and reduce vibrations.
In active magnetic bearings (AMBs) supported rigid rotor systems, the unbalance compensation strategy based on a notch filter was often used to suppress the synchronous unbalance vibration when the rotor operates in the steady-state rotational speed. Whereas the rotor operates in a rotational-speed range including the critical rotational speeds, conventional notch filters should be improved to suppress the unbalance vibration. In most cases, improving the structure of the notch filter, such as a cross-feedback notch filter, phase-shift notch filter, adding the polarity switch or two-stage switch, was considered to make the notch filter work in the rotational-speed range. However, the improved notch filter may affect the stability of the AMBs rotor systems and result in large vibrations when the polarity switch or two-stage switch shifts. To avoid the shortcomings of these methods, a method using a variable angle compensation algorithm was proposed to suppress the synchronous unbalance vibration in finite iterative seeking processes, directly realizing unbalance compensation according to real-time rotor position. Finally, the effectiveness of the method proposed is verified by simulation and experiment results.
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