Parallel mode notch filters for vibration control of magnetically suspended flywheel in the full speed range. Issue 9 (29th June 2020)

• Record Type: Journal Article
• Authors: Peng, Cong; He, Jiaxi; Deng, Zhiquan; Liu, Qiang
• Is Part Of: IET electric power applications. Volume 14:Issue 9(2020)
• Page Start: 1672
• Page End: 1678
• Publication Date: 2020-06-29
• Subjects: vibration control -- magnetic bearings -- closed loop systems -- flywheels -- harmonics suppression -- stability -- notch filters -- rotors (mechanical) -- velocity control; multiple different notch filters -- baseline magnetically suspension system -- closed‐loop stability -- speed range -- MSFW -- harmonics suppression -- stability preservation -- parallel mode notch filters -- vibration control -- undesired vibration force -- harmonic currents -- magnetically suspended flywheel rotor system -- system stability -- performance degradation -- multiple different phase‐shift notch filters -- vibration harmonics -- multifrequency vibrations; Electric power -- Periodicals; Electric power systems -- Periodicals; 621.305
• DOI: 10.1049/iet-epa.2019.0392
• Languages: English
• ISSNs: 1751-8660

Abstract

Abstract : Undesired vibration force caused by harmonic currents is a common problem in a magnetically suspended flywheel (MSFW) rotor system. It poses a potential threat to system stability and performance degradation. In this work, multiple different phase‐shift notch filters are connected in parallel mode to suppress the vibration harmonics. First, the multi‐frequency vibrations in the MSFW is modelled and analysed. Then multiple different notch filters in parallel mode are proposed to plug into the baseline magnetically suspension system. The performance comparison with the conventional multiple notch filters is investigated. The parameters design and calculation for the proposed method are analysed in details. Moreover, the closed‐loop stability of the overall system is given in the full speed range. Finally, simulation and experimental results for the MSFW demonstrate the superiority of the proposed method on both harmonics suppression and stability preservation.