Vibration and noise reduction of HVDC anode saturable reactor by polyurethane damping elastomer

Zhang, Pengning; Li, Lin; Zhang, Juanjuan; Gao, Chong

doi:10.3233/jae-180050

Cited by 11 publications

(4 citation statements)

References 14 publications

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“…(17,18) Polyurethane elastomers (PUEs) have a special microphase separation structure, which has shown excellent performance (19) and has attracted the interest of researchers for use in damping and vibration isolation. (20)(21)(22) However, the performance analysis of vibration isolation has mainly been by software simulations. (23)(24)(25)(26) Moreover, no detailed information has been reported on the relationship between the internal structure of PUEs and their vibration isolation characteristics.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Effects of Chain Extenders and Cross-linking Agents of Polyurethane Elastomers Using Independent Building Vibration Isolation Sensor

Gui¹,

Xia²,

Hao³

et al. 2019

Sensors and Materials

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Polymeric materials are used for vibration protection owing to their high-energy dissipation or adsorption. In this study, polyurethane elastomers (PUEs) were prepared using six kinds of chain extender and three types of cross-linking agent. The relationships between their structures and vibration isolation performances were investigated in detail using an independent building vibration isolation sensor. The results showed that elastomers with fewer main chain carbon atoms exhibited better vibration isolation performance. With increasing number of side groups of the chain extender, both the damping and vibration isolation properties were improved. For different cross-linkers, a more irregular structure of the cross-linkers resulted in the better vibration isolation performance of the PUEs.

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Section: Introductionmentioning

confidence: 99%

Investigation on Effects of Chain Extenders and Cross-linking Agents of Polyurethane Elastomers Using Independent Building Vibration Isolation Sensor

Gui¹,

Xia²,

Hao³

et al. 2019

Sensors and Materials

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“…that most misjudgments occur in adjacent looseness modes. By analyzing the original data and time-frequency spectrum of the vibration signals, the main reasons for this phenomenon are identified as follows: (1) In adjacent modes, the vibration signals have partially similar features, which leads to misjudgments in the diagnostic model. (2) The four algorithms did not fully extract the features of the iron core looseness in the time-frequency figures.…”

Section: Recognition Effects Comparison For Different Methodsmentioning

confidence: 99%

“…The complex internal stress and external factors will gradually erode the working performance of the converter valve components. During this process, the tension belt of the saturable reactor will undergo plastic deformation, which leads to changes in the tension and looseness of the iron core [1]. Subsequently, there may be increased iron loss or overheating, which may even cause the shutdown of the converter valve [2].…”

Section: Introductionmentioning

confidence: 99%

A Diagnostic Method for the Saturable Reactor Core Looseness Degree of Thyristor Converter Valves

Zheng,

Wei,

Sun

et al. 2023

Applied Sciences

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During the long-term operation of thyristor converter valves, the saturable reactor vibration (mainly caused by magnetostriction) will lead to core looseness faults. In order to accurately evaluate the fault degradation degree, this paper proposes a vibration signal recognition model for iron core looseness based on synchrosqueezed wavelet transforms and a convolutional neural network. Firstly, vibration experiments are conducted on saturable reactors to obtain signals under different core looseness degrees. Then, the spectrogram features of vibration signals are extracted using synchrosqueezed wavelet transform. Finally, based on the high-dimensional learning ability of convolutional neural networks, the fault characteristics of the spectrogram are mined to accurately identify the core looseness degree. The research results indicate that the model in the paper has higher recognition accuracy than some other methods, which provides convenience for the monitoring and maintenance of saturable reactors.

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“…The anode saturated reactor (ASR) is the key component in the HVDC system. The vibration problem of ASR is very prominent, which mainly comes from the cores of ASR [6]. A model of ASR is shown in Figure .1.…”

Section: Introductionmentioning

confidence: 99%

Study for Influence of Harmonic Magnetic Fields on Vibration Properties of Core of Anode Saturable Reactor in HVDC Converter Valve System

Wang

Gao

et al. 2021

IEEE Access

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The cores of anode saturated reactor (ASR) are the main vibration source of the HVDC converter valve system. The ASR is excited with an impulse voltage, which contains many harmonic components, and the magnetostriction of cores is usually the main reason of the ASR vibration. Therefore it is significant to study the influence of the harmonic on the vibration of core of ASR. In this paper, the magneto-mechanical coupling model is established based on the magnetostriction theory and the expression of vibration acceleration in the presence of third harmonic is derived. The vibration test platform is built to test the core's vibration acceleration. The magnetic and magnetostrictive properties of silicon steel sheet under different working conditions are measured. The three-dimensional simulation model of the core is established, and the vibration acceleration under different magnetic flux density is calculated. The comparison of the experiment and simulation results shows the rationality of the magneto-mechanical coupling model. The influence of third harmonic magnetic flux density on vibration is studied by changing the phase of the third harmonic magnetic flux density and the ratio of the third harmonic magnetic flux density to the fundamental magnetic flux density. Both the calculated and measured results show that the third harmonic magnetic flux density affects the vibration acceleration according to the double-frequency components of the third harmonic, as well the sum-frequency and difference-frequency components of the third harmonic and fundamental frequency.

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Vibration and noise reduction of HVDC anode saturable reactor by polyurethane damping elastomer

Cited by 11 publications

References 14 publications

Investigation on Effects of Chain Extenders and Cross-linking Agents of Polyurethane Elastomers Using Independent Building Vibration Isolation Sensor

Investigation on Effects of Chain Extenders and Cross-linking Agents of Polyurethane Elastomers Using Independent Building Vibration Isolation Sensor

A Diagnostic Method for the Saturable Reactor Core Looseness Degree of Thyristor Converter Valves

Study for Influence of Harmonic Magnetic Fields on Vibration Properties of Core of Anode Saturable Reactor in HVDC Converter Valve System

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