Empirical Vibration Synthesis Method for Electric Machines by Transfer Functions and Electromagnetic Analysis

Saito, Akira; Kuroishi, Masakatsu; Nakai, Hideo

doi:10.1109/tec.2016.2565265

Cited by 21 publications

(4 citation statements)

References 17 publications

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“…In this study, experimental analysis is implemented to predict the deformation in SW to restrict the vibrations in the machine. It is observed that there is a good comparison between the experimental vs numerical approaches in predicting the frequencies [23][24][25][26][27]. Therefore, reducing the vibrations in the test motor is important to increase the life of the machine.…”

Section: Introductionmentioning

confidence: 99%

Induction Motor Structure Design to Reduce Vibrations With Numerical (FEA) and Experimental (VA) Techniques

Sri Ram Prasad,

Dhananjay Rao,

Alsaif

2024

IEEE Access

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The resolution in the design of the machine structure can control vibrations that increase the lifespan of the induction motor (IM). This is feasible by retaining the machine's vibrations within acceptable ranges. To reduce these vibrations of an aged machine a vibration analyzer (VA), finite element approach (FEA), and experimental modal technique (EMT) are applied to an induction motor. The test on stator windings (SW) with global mode revealed that the windings in slots 7 and 8 are deformed. ANSYS software was used to model the machine with FEA numerically to predict the vibration velocity (VV) and found 18.3 mm/s. The vibration analysis was applied to IM and noticed a vibration velocity of 10.6 mm/s, indicating both the numerical and experimental vibration velocities are greater than 5 mm/s. This can reduce the reliability of the motor as per ISO Standard 10816 and cannot meet industrial needs. The test machine was numerically redesigned with a 6-hole reinforced frame and raised to 0.1 cm in thickness to reduce the vibrations then VV was recorded as 2.9 mm/s. Vibration analysis is carried out experimentally while the machine windings are tightened after modification and the vibration is 3.2 mm/s. Finally, both numerically (84.15%) and experimentally (69.81%), the test motor's vibrations are reduced, enhancing the test motor's reliability to meet industrial requirements and minimizing the plant's revenue cost.

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Section: Introductionmentioning

confidence: 99%

Induction Motor Structure Design to Reduce Vibrations With Numerical (FEA) and Experimental (VA) Techniques

Sri Ram Prasad,

Dhananjay Rao,

Alsaif

2024

IEEE Access

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“…At the same time, the main components are distributed in the maximum deformation area far away from the resonance frequency point to avoid large relative deformation between the components on the transmission path during the vibrator process [ 4 , 27 , 28 ]. This relative deformation results in damage to the connections on the electrical transmission path, creating a PIM risk [ 29 , 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

A Mechanical Modelling and Simulation Method for Resolving PIM Problems in Antennas

Chen

2021

Sensors

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Passive intermodulation (PIM) generated from antennas is a nonlinear distortion phenomenon and causes serious problems to communication quality. Traditional radio frequency (RF) solutions focus on testing the final product to find the PIM source. However, it cannot solve the stability of PIM after the antenna is vibrated. This paper introduces a new method to improve the stability of PIM in the design phase. By studying the mechanism of PIM generation, a simulation method is proposed in this paper by applying mechanical finite element simulation and simulating the structural design of the device under test. Then, the stress at the PIM source is reduced, thereby the PIM stability of the product is improved. This paper adopts this method by studying a typical product, finding the root cause that affects the product PIM magnitude and stability, and optimizing its design. The PIM value of the new scheme is stable by making a prototype and testing. The method provided in this article can effectively improve product development efficiency and assist designers in avoiding the risks of PIM before the product’s manufacturing.

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“…The method has gained interest over the last decade thanks to the exhaustive work of Boesing et al [6], e.g. for combined experimental and numerical predictions [7], or as a quick alternative to standard FE methods reviewed in [8]. However consistent comparisons with FE methods in terms of accuracy against computational efforts is not documented to the authors knowledge.…”

Section: Introductionmentioning

confidence: 99%

On the Use of Vibration Synthesis to Ease Electric Machine Powertrain Design

Chauvicourt

Ciceo

Auweraer

2019

2019 IEEE International Electric Machines &Amp; Drives Conference (IEMDC)

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This paper provides e-machine designers a critical study on the vibration synthesis algorithm that calculates the vibrations of an electric machine responsible for magnetic noise. It separates the computations into two distinct categories: offline and online. Comprehensive parameters are input to an offline simulation system where generic magnetic forces and vibration transfer functions are created. This generic data combined with operational loads from system-level simulations refers to the online simulation environment. The methodology is applied to an interior Permanent Magnet Synchronous Machine (PMSM), and compared to the standard procedure where run-up simulation can become time-expensive due to the extensive use of Finite Elements (FE) methods. Vibration results show discrepancies of harmonic amplitude content essentially coming from the force truncation made in the vibration synthesis, for which a selection protocol is proposed. Yet the offline simulations permit to frontload the computational efforts thus implying the use of the technique in system-simulation environments.

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Empirical Vibration Synthesis Method for Electric Machines by Transfer Functions and Electromagnetic Analysis

Cited by 21 publications

References 17 publications

Induction Motor Structure Design to Reduce Vibrations With Numerical (FEA) and Experimental (VA) Techniques

Induction Motor Structure Design to Reduce Vibrations With Numerical (FEA) and Experimental (VA) Techniques

A Mechanical Modelling and Simulation Method for Resolving PIM Problems in Antennas

On the Use of Vibration Synthesis to Ease Electric Machine Powertrain Design

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