Experimental Verification and Effects of Step Skewed Rotor Type IPMSM on Vibration and Noise

Jung, Jaewoo; Kim, Dojin; Hong, Jung-Pyo; Lee, Geun-Ho; Jeon, Seong-Min

doi:10.1109/tmag.2011.2150739

Cited by 88 publications

(19 citation statements)

References 6 publications

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“…In order to investigate the effects of optimising the stator parameters on the amplitude of the vibration displacements reduction, (7)- (12) have been used. First, the frequencies of the force components in the prototype BLDC motor are derived and then by using the values of their corresponding natural frequencies from Table 4, the amount of vibration displacements amplitude reduction is calculated.…”

Section: Structural Designmentioning

confidence: 99%

Optimum design of the stator parameters for noise and vibration reduction in BLDC motor

Jafarboland

Farahabadi

2018

IET Electric Power Applications

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A new optimum structural design is presented here in order to shift the natural frequencies of the stator structure in brushless DC motor to the highest values at different mode shapes and increase the stator stiffness. Shifting the stator natural frequencies to higher values reduces or eliminates the severe effects of the structural resonances as the coincidence of the natural frequencies and the components of the motor electromagnetic excitation forces occur at higher frequencies at which the forces have lower amplitudes. In the proposed structural design, some parameters relating to stator slot are optimised to shift the stator's natural frequencies to the highest values without changing the slot areas and the stator outer diameter as the problem constraints. The optimisation is done by the response surface methodology combined with the modal analysis by the finite element method (FEM). The validity of the optimisation method is confirmed by FEM simulations and experimental tests at different speed regions. Moreover, the performances of the prototype and optimum motors are analysed by FEM and experimental tests to show that the stator parameters optimisation process does not cause any negative influences on the quality of the motor performance.

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Section: Structural Designmentioning

confidence: 99%

Optimum design of the stator parameters for noise and vibration reduction in BLDC motor

Jafarboland

Farahabadi

2018

IET Electric Power Applications

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“…The frequencies of vibration are caused by electromagnetic forces, i.e. cogging torque ( f cog ), torque ripple ( f rip ), and radial force ( f rad ) and they are calculated as [12,13]…”

Section: Experimental Verificationmentioning

confidence: 99%

Optimal design of motor shape and magnetisation direction to obtain vibration reduction and average torque improvement in IPM BLDC motor

Kim

Kwon

2017

IET Electric Power Applications

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An optimal design for the interior permanent magnet (IPM) motor is proposed to reduce vibration and increase average torque, based on simultaneous consideration of the rotor d-axis notch shape, the stator chamfer angle, and the magnetisation direction. The notch shape of the rotor and the chamfer of the stator tooth shape were first reviewed in order to reduce the vibration of the IPM motor; however, the optimal shapes for reduced vibration also reduced the average torque. Then, a design optimisation for average torque improvement was performed considering the magnetisation direction and the vibration reduction based on the modelled stator and rotor shapes. Finally, the validity and superiority of the optimised design were confirmed by manufacturing and testing a prototype motor.

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“…The load of the radial electromagnetic force location is shown in Figure 21. Every harmonic component of both the radial force and bending moments was applied to each tooth as a driving force with phase difference [18]. The stator modal finite element simulation has been made and the modal shape of the generator stator is shown in Figure 20.…”

Section: Electromagnetic Harmonic Response Vibration Coupled Analysismentioning

confidence: 99%

“…The load of the radial electromagnetic force location is shown in Figure 21. Every harmonic component of both the radial force and bending moments was applied to each tooth as a driving force with phase difference [18]. In this paper, after setting the electromagnetic force on the stator tooth ends, the electromagnetic vibration deformation of rotor eccentricity and rotor elliptical deformation was solved, under various fields current and loads.…”

Section: Electromagnetic Harmonic Response Vibration Coupled Analysismentioning

confidence: 99%

Electromagnetic Vibration Simulation of a 250-MW Large Hydropower Generator with Rotor Eccentricity and Rotor Deformation

Peng

et al. 2017

Energies

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Abstract:The electromagnetic vibration caused by electromagnetic force on the stator has threatened large hydro generators operating safely and stably. At the Zhexi hydropower station, the hydro generator was beset by electromagnetic vibration for a long time. Therefore, the paper provided a new method to help to find the vibration source and detect the hydro generator fault, through the combination of simulation and experiments. In this paper, the 3D stator pack structure model and the 2D hydro generator electromagnetic models under rotor eccentricity and rotor ellipse deformation conditions were built. Then, electromagnetism simulations were conducted to study the characteristics of the electromagnetic flux and electromagnetic force under different conditions by using the finite element method (FEM). Lastly, the vibration testing experiments and harmonic response simulations of stator frame were performed to present the characteristics of vibration distribution in frequency conditions. The simulation results were compared with the generator measured data to try to find out the main vibration source and guide the overhaul.

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Experimental Verification and Effects of Step Skewed Rotor Type IPMSM on Vibration and Noise

Cited by 88 publications

References 6 publications

Optimum design of the stator parameters for noise and vibration reduction in BLDC motor

Optimum design of the stator parameters for noise and vibration reduction in BLDC motor

Optimal design of motor shape and magnetisation direction to obtain vibration reduction and average torque improvement in IPM BLDC motor

Electromagnetic Vibration Simulation of a 250-MW Large Hydropower Generator with Rotor Eccentricity and Rotor Deformation

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