Iron Loss Prediction Model for Radial Magnetic Bearing of Molecular Pump Considering Temperature Influence

Zhang, Xu; He, Zhimin; Han, Bangcheng; Zhang, Yiming; Xiangyang, Ye

doi:10.23919/icems.2018.8549213

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…Magnetic bearing has the advantages of being oil-free and frictionless [1], and is widely used in compressors [2,3], blowers [4,5], molecular pumps [6], flywheel energy storage [7,8], electric spindles [9] and other fields. However, when a power failure occurs in practical applications, the high-speed rotor will lose its electromagnetic force support and fall directly, thus triggering a violent collision, which will cause fatal damage to the rotor and bearings and affect the reliability of the whole system.…”

Section: Introductionmentioning

confidence: 99%

Study on abnormal power failure shutdown control of magnetic suspension centrifugal compressor

Guo

et al. 2022

IET Electric Power Appl

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The rotor of a magnetic suspension centrifugal compressor is supported by magnetic bearing, and a power failure will cause the high‐speed rotor to fall directly onto the protective bearings, affecting the reliability of the compressor. To solve this problem, this paper proposes an abnormal power failure shutdown control method with semi‐switching modulation of the inverter. Firstly, the overall scheme of abnormal power failure shutdown control is designed, and its feasibility is analysed in detail through mathematical modelling. Secondly, aiming at the non‐linear, time‐varying and gain uncertainty characteristics of the control system, a voltage control strategy based on parametric self‐regulating sliding‐mode variable structure is proposed, and the stability is analysed. Finally, the method proposed in this paper is experimentally verified, the results show that this method does not depend on the electric angle of the motor compared to existing methods, and the rotor can achieve a zero‐drop speed shutdown, which greatly improves the reliability of the magnetic suspension centrifugal compressor.

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Section: Introductionmentioning

confidence: 99%

Study on abnormal power failure shutdown control of magnetic suspension centrifugal compressor

Guo

et al. 2022

IET Electric Power Appl

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Finite Element Simulation of Iron Losses for an Active Magnetic Bearing – Rotor System Constructed of Hiperco Laminations

Koufopanos,

Nikolakopoulos

2024

Preprint

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Iron Loss Prediction Model for Radial Magnetic Bearing of Molecular Pump Considering Temperature Influence

Cited by 2 publications

References 9 publications

Study on abnormal power failure shutdown control of magnetic suspension centrifugal compressor

Study on abnormal power failure shutdown control of magnetic suspension centrifugal compressor

Finite Element Simulation of Iron Losses for an Active Magnetic Bearing – Rotor System Constructed of Hiperco Laminations

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