Asymmetric effect of static radial eccentricity on the vibration characteristics of the rotor system of permanent magnet synchronous motors in electric vehicles

Liu, Feng; Chen, Xiang; Liu, Hui; Han, Lijin; Wu, Yunhao; Wang, Xiaojie; Gao, Pu

doi:10.1007/s11071-019-04942-6

Cited by 17 publications

(8 citation statements)

References 40 publications

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“…It is found that a Hopf bifurcation occurs in the system by using center manifold and normal form. Liu et al [36] established a Jeffcott rotor model for the rotor system of the permanent magnet synchronous motors in electric vehicles, and center manifold theorem and Lyapunov method are used to determine the stabilities of multiple equilibrium points.…”

Section: Center Manifold Order Reduction Methodsmentioning

confidence: 99%

A Review of Model Order Reduction Methods for Large‐Scale Structure Systems

Zhang

et al. 2021

Shock and Vibration

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The large-scale structure systems in engineering are complex, high dimensional, and variety of physical mechanism couplings; it will be difficult to analyze the dynamic behaviors of complex systems quickly and optimize system parameters. Model order reduction (MOR) is an efficient way to address those problems and widely applied in the engineering areas. This paper focuses on the model order reduction of high-dimensional complex systems and reviews basic theories, well-posedness, and limitations of common methods of the model order reduction using the following methods: center manifold, Lyapunov–Schmidt (L-S), Galerkin, modal synthesis, and proper orthogonal decomposition (POD) methods. The POD is a powerful and effective model order reduction method, which aims at obtaining the most important components of a high-dimensional complex system by using a few proper orthogonal modes, and it is widely studied and applied by a large number of researchers in the past few decades. In this paper, the POD method is introduced in detail and the main characteristics and the existing problems of this method are also discussed. POD is classified into two categories in terms of the sampling and the parameter robustness, and the research progresses in the recent years are presented to the domestic researchers for the study and application. Finally, the outlooks of model order reduction of high-dimensional complex systems are provided for future work.

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Section: Center Manifold Order Reduction Methodsmentioning

confidence: 99%

A Review of Model Order Reduction Methods for Large‐Scale Structure Systems

Zhang

et al. 2021

Shock and Vibration

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“…6. UEMF, which is caused by rotor eccentricity, generates a negative stiffness with respect to nonlinearity, which plays a key role in the dynamic behavior [75]. Furthermore, abnormal rotation, induced by mass imbalance and external forces, results in rotor eccentricity, and the UEMF causes the rotor to further move toward the stator and alters the air-gap Fig.…”

Section: Electromagnetic Vibrationmentioning

confidence: 99%

In-Wheel Motor Vibration Control for Distributed-Driven Electric Vehicles: A Review

Zhao

Taghavifar

et al. 2021

IEEE Trans. Transp. Electrific.

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“…In addition, the vibrations of eccentric structures by considering the characteristics of specific mechanical systems have been investigated extensively. [8][9][10][11][12] Badger et al 8 developed a model to predict the final scallop profile shape and investigated the effect of grinding-wheel eccentricity on the grinding forces, wheel wear, and final waviness height. Considering the electromechanical interaction between the stator and rotor of an asynchronous generator, Dona´t and Dusˇek 9 investigated the effect of an eccentrically mounted rotor pack on vibration and noise.…”

Section: Introductionmentioning

confidence: 99%

Dynamic instability of an eccentrically rotating ring-shaped structure

Wei,

Wang,

Wang

2024

Proceedings of the Institution of Mechanical Engineers, Part C:

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Ring-shaped structures are widely used in engineering. However, their rotation axes are typically not coincident with the geometric axes, thus resulting in a rotational centrifugal force and significant vibration. This study focuses on the dynamic instability caused by constant and time-varying eccentricities. An analytical model is established using Hamilton’s principle and the Galerkin method, in which the rotational centrifugal forces resulting from constant and time-varying eccentricities are incorporated. Based on this model, the effects of rotation, revolution, eccentricity ratio, and damping on instability behaviors are examined. The instabilities caused by constant eccentricity are predicted using eigensolutions, whereas those caused by time-varying eccentricity with single- and multifrequency components are estimated by applying the Floquét theory. The results show that the instability domains from the multifrequency eccentricity are not a simple superposition of those from the single-frequency eccentricity but contain more instability domains originating from their combinations. The instability suppressions imposed by damping and gyroscopic effects are compared. Finally, the instability domains from constant and time-varying eccentricities are verified via numerical calculations.

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Asymmetric effect of static radial eccentricity on the vibration characteristics of the rotor system of permanent magnet synchronous motors in electric vehicles

Cited by 17 publications

References 40 publications

A Review of Model Order Reduction Methods for Large‐Scale Structure Systems

A Review of Model Order Reduction Methods for Large‐Scale Structure Systems

In-Wheel Motor Vibration Control for Distributed-Driven Electric Vehicles: A Review

Dynamic instability of an eccentrically rotating ring-shaped structure

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