Investigation of electromechanical coupling torsional vibration and stability in a high-speed permanent magnet synchronous motor driven system

Chen, Xing; Wei, Hanbing; Deng, Tao; He, Zeyin; Zhao, Shuen

doi:10.1016/j.apm.2018.07.030

Cited by 39 publications

(14 citation statements)

References 15 publications

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“…To analyse the dynamic characteristics of the motor under a variable fluid load, the rotor of the pump system is simplified into a two-mass rotor model, as shown in Figure 1. The dynamics equations of the rotor system can be written as follows [28]:…”

Section: Rotor Dynamic Equation Of Systemmentioning

confidence: 99%

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An integrated approach of a field‐circuit coupling model and multi‐physics finite‐element simulation for analysing transient electromagnetic vibration of pump motors

Zhao

Zhang

Wei

2022

IET Electric Power Appl

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We propose a method to investigate the generation mechanism of the transient vibration of a pump motor induced by electromagnetic (electromagnetic (EM)) forces. Compared with the steady vibration of a pump motor, the transient vibration characterised by a wider excitation frequency spectrum and larger instantaneous amplitude makes the vulnerable structure more easily exposed to potential damage. However, transient vibration of pump motor has not been analysed and verified before. Based on the fact that EM vibration dominates the vibration of pump motors, in this study, an approach which integrates the field-circuit coupling method and multi-physics finite-element (finiteelement (FE)) simulation is proposed to estimate the structural response of pump motors under transient operating conditions. To determine the factors that determine the EM forces, an analytical model describing the transient interaction between the EM and the fluid torque is first created. It was revealed that the input voltage and slip rate are two key factors that affect the transient EM forces. Then, to quantitatively describe the transient EM forces governed by a specific control scheme during the start-up process, a fieldcircuit coupling model embedding in the control scheme, electrical circuit model, motor FE model, and rotor dynamic model is established. This model allows the circuit equations, rotor dynamics equations, and magnetic field equations to be solved simultaneously. The transient EM forces obtained by the field-circuit coupling model provide excitation for the structural response calculation. Subsequently, a multi-physics FE simulation, which takes a weak coupling strategy between the EM and structural dynamics fields, is utilised to link the different physical domains. Thus, the EM forces are transferred to a structural domain to compute the structural response by adopting a direct integration method. The integration approach developed in this study was verified on the pump motors in the main cooling units of ultra-high voltage (UHV) converter stations. The trends of dominant components of simulated signals agree with the measured signals from the pump motors. This indicates that the proposed method can be widely applied for the transient vibration analysis and mitigation for pump motors.

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Section: Rotor Dynamic Equation Of Systemmentioning

confidence: 99%

“…By substituting Equation (28) into Equation (30), omitting the high spatial order and low amplitude force components, and omitting the constant vibration components that do not excite vibration, the EM forces can be expressed as…”

Section: Electromagnetic Excitation Forcesmentioning

confidence: 99%

An integrated approach of a field‐circuit coupling model and multi‐physics finite‐element simulation for analysing transient electromagnetic vibration of pump motors

Zhao

Zhang

Wei

2022

IET Electric Power Appl

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“…For meeting the requirements, researchers have put forward many ideas, among which harmonic reducer and cycloid reducer have been applied in the robot drive system (Mahanto et al, 2018;Qian et al, 2020). At the same time, several new motors have been made and used in engineering practice (Chen et al, 2018;Matsuda et al, 2017), which brings new opportunities and challenges for the reducers industry. However, little research has been carried out about this.…”

Section: Introductionmentioning

confidence: 99%

Adaptive loading ball traction drive reducer: modeling and efficiency performance

Luo

Wang

Jiang

et al. 2021

JAMDSM

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In this paper, a novel type of adaptive loading ball traction drive reducer (AL-BTDR) is proposed and investigated in modeling and efficiency performance. A combination of power flow and equal linear velocity method is developed to evaluate the speed ratio for the first time. Meanwhile, the spin loss at contact areas is also analyzed based on the Hertz contact theory, and a new approach depended on power flow is introduced to establish the efficiency model. By applying the efficiency model, the performance of efficiency with different output torque is calculated, and the distinctions under adaptive loading and constant loading are investigated. The results show that AL-BTDR has an excellent efficiency performance under adaptive loading with a maximum of 91%. Additionally, efficiency is higher under adaptive loading and will not sharply drop when compared with constant loading.

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“…Numerous scholars have conducted extensive research in this field. Chen [7]- [9] established a torsional vibration model of a powertrain to study the effects of electromechanical parameters on primary resonance characteristics. Bifurcation characteristics of the external excitation amplitude and damping on the system were investigated by applying the Melnikov method.…”

Section: Introductionmentioning

confidence: 99%

Research on the Damping Effect Mechanism and Optimization of Super-High-Speed Electric Air Compressors for Fuel Cell Vehicles Under the Stiffness Softening Effect

Wang

et al. 2020

IEEE Access

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As a typical electromechanically coupled system, the super-high-speed permanent magnet synchronous motor (PMSM)-driven compressor always exhibits complex dynamic behavior, affecting the comprehensive performance of the fuel cell system. Based on this, this paper takes electromagnetic and load excitations into account and establishes a mathematical model of the super-high-speed PMSMdriven compressor. Then, the corresponding simulation is carried out, revealing that according to different causes and manifestations, the system gradually exhibits amplitude instability and frequency instability. Considering the stiffness softening effect, the effect of the torsional stiffness and damping coefficient on the dynamic characteristics under different forms of instability is obtained. Using the Routh-Hurwitz criterion and Melnikov theory, a damping optimization methodology is given. The results show that under the condition of amplitude instability, damping reduction and stiffness softening lead to a greater resonant amplitude and a wider resonance region. Under the condition of frequency instability, the system becomes chaotic via periodic-doubling bifurcation with the decrease of damping, and the decrease of torsional stiffness increases the damping required to maintain the stability. INDEX TERMS super-high-speed permanent magnet synchronous motor, fuel cell system, stiffness softening, damping optimization

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Investigation of electromechanical coupling torsional vibration and stability in a high-speed permanent magnet synchronous motor driven system

Cited by 39 publications

References 15 publications

An integrated approach of a field‐circuit coupling model and multi‐physics finite‐element simulation for analysing transient electromagnetic vibration of pump motors

An integrated approach of a field‐circuit coupling model and multi‐physics finite‐element simulation for analysing transient electromagnetic vibration of pump motors

Adaptive loading ball traction drive reducer: modeling and efficiency performance

Research on the Damping Effect Mechanism and Optimization of Super-High-Speed Electric Air Compressors for Fuel Cell Vehicles Under the Stiffness Softening Effect

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