Design of a Reactor Driven by Inverter Power Supply to Reduce the Noise Considering Electromagnetism and Magnetostriction

Gao, Yanhui; Muramatsu, Kazuhiro; Hatim, Muhd Juzail; Fujiwara, Koji; Ishihara, Yoshiyuki; Fukuchi, Shigemasa; Takahata, Tetsumi

doi:10.1109/tmag.2010.2046144

Cited by 46 publications

(20 citation statements)

References 3 publications

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“…The effect of noise reduction of the sound barrier depends on the diffraction angleφ. The larger the diffraction angle is, the greater the sound attenuation of the sound barrier, and the better the effect [7] . Obviously, if the height of the sound insulation barrier is increased, or the sound source or the receiver is close to the sound barrier, the diffraction angle can be increased.…”

Section: Maximum Acoustic Ray Shielding Methodsmentioning

confidence: 99%

Optimization Analysis on Layout of 220kV Outdoor Substation for Noise Control at the Boundary

Mengyao

2021

E3S Web Conf.

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The noise in substations has become one of the most concerning problems in the field of power grid. In this paper, the principle of substation layout optimization based on the maximum acoustic ray shielding method is established in the premise of the sound wave propagation rule in complicated air medium to meet the requirements of relevant national environmental standards for noise at the boundary of the substation. By establishing the acoustic simulation analysis model of the 220kV outdoor substation, the noise level at the boundary of the substation before and after the layout optimization is compared and analysed, and the distribution rule of the sound field inside and outside the substation is obtained. The analysis results show that the optimized layout of the substation can effectively reduce the noise at the boundary of the substation, which provides a control method for the noise optimization design of the substation.

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Section: Maximum Acoustic Ray Shielding Methodsmentioning

confidence: 99%

Optimization Analysis on Layout of 220kV Outdoor Substation for Noise Control at the Boundary

Mengyao

2021

E3S Web Conf.

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“…Excessive vibration is one of the most common problems in the operation of shunt reactors due to the air gaps in the core limb that provide large inductance [1]. e vibration of the core (iron yoke and core limb) is one of the most important causes of shunt reactor vibration [1][2][3][4][5][6][7][8][9]. e elastic deformation of the core in the magnetic field due to Maxwell force and magnetostriction is considered to be the main reason for shunt reactor core vibration [2].…”

Section: Introductionmentioning

confidence: 99%

“…e 3D anisotropy (in the direction of RD, TD, and LD) has been simplified into 2D (RD and TD) in the 2D method. e 2D method has high accuracy in the study of small dry reactors with cuboid core limbs [3,4]. However, the core limb of many large oil-immersed shunt reactors such as UHV shunt reactors is a cylinder with laminated silicon steel, which is very different from the core limb of a small dry reactor.…”

Section: Introductionmentioning

confidence: 99%

“…Adjusting the air gaps can be a useful method to reduce the vibration of shunt reactors. e method of adding air gaps in the yokes and adjusting the hardness of the air gap material was proposed by Gao et al [4]. e method of filling the air gap by a novel method inserting negative giant magnetostrictive material (NGMM) was proposed by Yan et al [5].…”

Section: Introductionmentioning

confidence: 99%

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A New 3D Method for Reactor Core Vibration Based on Silicon Steel Lamination Rules and Application in UHV Shunt Reactors

Lü

Guo

Niu

et al. 2019

Mathematical Problems in Engineering

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A new three-dimensional (3D) analysis method is proposed as the existing two-dimensional (2D) method has low accuracy in analysing the vibration characteristics of oil-immersed shunt reactors, such as ultrahigh-voltage (UHV) shunt reactors. First of all, a set of 3D laminated coordinate systems was defined based on silicon steel lamination rules, in which the anisotropy of magnetic properties for laminated silicon steel in the rolling direction (RD), the transverse direction (TD), and the lamination direction (LD) were considered. Then, the mapping between laminated coordinate systems and space rectangular coordinate system was established to unify the parameters in different laminated coordinate systems. With the mapping, the anisotropy of the magnetic properties in the laminated coordinate systems was transformed into a rectangular coordinate system. Next, two sets of comparative studies between the new 3D method and the traditional 2D method were carried out, which show that the 3D method has high precision and a wide application range. Finally, the relationship between air gap number and core vibration of UHV shunt reactors was studied by the new 3D method. The results show that, as the number of air gaps increases, the magnetic flux density and the total force area of Maxwell force are increased, resulting in the intensification of core vibration. The conclusions of this paper are helpful for the design of large oil-immersed reactors.

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“…To reduce the vibration and noise of power transformer cores, Phway et al avoided resonance between the natural frequencies of the structure and the driving frequency 1 and Yanhui et al proposed a method by inserting the gap in the yoke and choosing the hard materials for the gaps. 2 But it is difficult to fix the yoke with gaps by the present manufacturing method. To further reduce the electromagnetic noise of transformer cores, nanocrystalline soft magnetic composite (NSMC) material, which is the composition of nano-sized magnetic material with high permeability and rubber particles, instead of epoxy or asphalt traditional damping material 3 is first introduced to fill the multi-joint gaps of the cores.…”

Section: Introductionmentioning

confidence: 99%

Numerical computation for a new way to reduce vibration and noise due to magnetostriction and magnetic forces of transformer cores

Zhu

Yang

Yan

et al. 2013

Journal of Applied Physics

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Magnetostriction (MS) caused by the global magnetization of limbs and yokes and magnetic forces are the undisputed causes of the vibration and noise in power transformer cores. This paper presents a novel way to reduce the vibration and noise, in which nanocrystalline soft magnetic composite (NSMC) material with high permeability is used to fill the step-lap joint gaps of the power transformer magnetic cores. In order to numerically predict the effectiveness of the proposed method, a 3-D magneto-mechanical strong coupled model including MS and magnetic anisotropy of steel sheet was founded. Then, the numerical model was applied to analyze the step-lap joint region of the corner of magnetic cores. The analysis results illustrated that the deformation and noise of core with NSMC are lower than with the traditional epoxy damping material. Moreover, the validity of the proposed new way was verified by the simplified step-lap joint cores, which were achieved based on Epstein Frames. V

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Design of a Reactor Driven by Inverter Power Supply to Reduce the Noise Considering Electromagnetism and Magnetostriction

Cited by 46 publications

References 3 publications

Optimization Analysis on Layout of 220kV Outdoor Substation for Noise Control at the Boundary

Optimization Analysis on Layout of 220kV Outdoor Substation for Noise Control at the Boundary

A New 3D Method for Reactor Core Vibration Based on Silicon Steel Lamination Rules and Application in UHV Shunt Reactors

Numerical computation for a new way to reduce vibration and noise due to magnetostriction and magnetic forces of transformer cores

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