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Overview of condition monitoring and operation control of electric power conversion systems in direct-drivewind turbines under faults

Shoudao HUANG, Xuan WU, Xiao LIU, Jian GAO, Yunze HE

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 281-302 doi: 10.1007/s11465-017-0442-1

Abstract: To improve the reliability of EPCSs and reduce the operation and maintenance cost of DD-WTs, numerousThis paper provides an overview of the CM, FD, and operation control of EPCSs in DD-WTs under faults.the common failures in wind generators and power converters; briefly reviewed CM and FD methods and operationcontrol of these generators and power converters under faults; and discussed the grid voltage faultscontrol systems to achieve high-performance and high-intelligence DD-WTs.

Keywords： direct-drive wind turbine     electric power conversion system     condition monitoring     fault diagnosis     operationcontrol under faults     fault tolerance    

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Micromixing performance of the teethed high shear mixer under semi-batch operation

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 4,   Pages 546-559 doi: 10.1007/s11705-021-2069-3

Abstract: Semi-batch operated reaction processes are necessary for some competitive reaction systems to achieve a desirable process selectivity and productivity of fine chemical products. Herein the structural and operating parameters of the teethed high shear mixers were adjusted to study the micromixing performance in the semi-batch operated system, using the Villermaux/Dushman reaction system. The results indicate that the rising of the rotor speed and the number of rotor teeth, the decrease of the width of the shear gap and the radial distance between the feed position and the inner wall of stator can enhance the micromixing level and lead to the decrease of the segregation index. Additionally, computational fluid dynamics calculations were carried out to disclose the evolution of the flow pattern and turbulent energy dissipation rate of the semi-batch operated high shear mixer. Furthermore, the correlation was established with a mean relative error of 8.05% and R2 of 0.955 to fit the segregation index and the parameters studied in this work, which can provide valuable guidance on the design and optimization of the semi-batch operated high shear mixers in practical applications.

Keywords： high shear mixer     semi-batch operation     micromixing performance     Villermaux/Dushman system     segregation    

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Optimization of urban bus operation frequency under common route condition with rail transit

Bin YU, Sijia REN, Enze WU, Yifan ZHOU, Yunpeng WANG

Frontiers of Engineering Management 2017, Volume 4, Issue 4,   Pages 451-462 doi: 10.15302/J-FEM-2017036

Abstract: buses and rail transits are becoming increasingly common, this paper aims to present the overlapped operation

Keywords： common route     bus operation frequency     bi-level model     Agent simulation     SCE-UA algorithm    

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Simulation of performance of intermediate fluid vaporizer under wide operation conditions

Bojie WANG, Wen WANG, Chao QI, Yiwu KUANG, Jiawei XU

Frontiers in Energy 2020, Volume 14, Issue 3,   Pages 452-462 doi: 10.1007/s11708-020-0681-4

Abstract: model for IFV is established in this paper in order to investigate the influences of structure and operation

Keywords： liquefied natural gas     intermediate fluid vapo-rizer     heat transfer performance     numerical simulation     extreme condition    

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Deformation control criterion of shield tunnel under lateral relaxation of soft soil

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 5,   Pages 780-795 doi: 10.1007/s11709-023-0944-3

Abstract: Metro shield tunnels under the lateral relaxation of soil (LRS) are susceptible to significant lateralHowever, deformation control standards for such situations have not been clearly defined.Subsequently, a deformation control criterion is established.For a shield tunnel with a diameter of approximately 6 m and under the lateral relaxation of sandy soil

Keywords： shield tunnel     lateral relaxation of soil     deformation control criterion of segment structure     model    

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Analysis and stabilization control of a voltage source controlled wind farm under weak grid conditions

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 943-955 doi: 10.1007/s11708-021-0793-5

Abstract: with weak grid connections, where the wind turbines (WTs) are controlled by a new type of converter controlstrategy referred to as the voltage source (VS) control.The primary intention of the VS control method is to achieve the high-quality inertial response capabilityTo this end, a frequency domain model of the wind farm under the VS control is first developed.of VS control while fulfilling the demand of inertial responses.

Keywords： weak grids     voltage source (VS) control     wind turbine (WT)     stabilization control     wind farm     inertial    

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Mechanism and control of existing faults on long-span concrete continuous system bridges in China

Lin Fan,Wang Ping,Xiao Kaijun,Li Wei

Strategic Study of CAE 2010, Volume 12, Issue 4,   Pages 78-81

Abstract: In this paper, the forms of many typical faults like excessive deflection in the mid-span, box beam crackAnd the characteristics of these faults' happening time, trend of development and distribution form

Keywords： prestressed     concrete     continuous bridge     fault     control method    

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Condition monitoring of a wind turbine generator using a standalone wind turbine emulator

Himani,Ratna DAHIYA

Frontiers in Energy 2016, Volume 10, Issue 3,   Pages 286-297 doi: 10.1007/s11708-016-0419-5

Abstract: open source technology from graze required for the condition monitoring to diagnose rotor and stator faultsThis paper provides a detailed overview of the hardware and software used along with the WTE controlstrategies such as MPPT and pitch control.The emulator reproduces dynamic characteristics both under step variations and arbitrary variation inelectric subassemblies direct drive WTs are most susceptible to damage in practice, generator winding faults

Keywords： (WTE)     wind turbine generator (WTG)     maximum power point tracking (MPPT)     tip speed ratio (TSR)     rotor faults     stator faults    

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An integrated approach for machine-learning-based system identification of dynamical systems under control: application towards the model predictive control of a highly nonlinear reactor system

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 237-250 doi: 10.1007/s11705-021-2058-6

Abstract: Advanced model-based control strategies, e.g., model predictive control, can offer superior control ofnonlinear continuous-time multiple-input multiple-output system models for nonlinear model predictive controlThis procedure successfully identified system models that enabled effective control in both servo andThis demonstration of how such system models could be identified for nonlinear model predictive controlwhich, in the face of process uncertainties or modelling limitations, allow rapid and stable control

Keywords： nonlinear model predictive control     black-box modeling     continuous-time system identification     machinelearning     industrial applications of process control    

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Semi-active fuzzy control of Lali Cable-Stayed Bridge using MR dampers under seismic excitation

Sajad JAVADINASAB HORMOZABAD, Amir K. GHORBANI-TANHA

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 706-721 doi: 10.1007/s11709-020-0612-9

Abstract: Seismic control of cable-stayed bridges is of paramount importance due to their complex dynamic behaviorIn the present study, several semi-active Fuzzy Control Algorithms (FCAs) for vibration mitigation ofThe performance of fuzzy control systems is also compared with a sky-hook and a passive-on system.Moreover, the sensitivity of efficiency of control systems to the peak ground acceleration is evaluatedTherefore, the results can be regarded as a general guide to design semi-active fuzzy control systems

Keywords： semi-active control     Fuzzy Control Algorithm     cable-stayed bridge     MR damper     Lali Bridge    

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Feedback linearization based control for weak grid connected PV system under normal and abnormal conditions

Rahul SHARMA,Sathans SUHAG

Frontiers in Energy 2020, Volume 14, Issue 2,   Pages 400-409 doi: 10.1007/s11708-017-0459-5

Abstract: This paper proposes a control strategy for interface of distributed energy sources into the weak gridand implemented to tackle the challenges of coupling terms in the LCL filter, the transient behavior undersudden changes, and the voltage support under fault condition using the feedback linearization techniquefilter and the performance of the controller has been verified using Matlab/Simulink through simulation under

Keywords： PV system     grid interface     feedback linearization     inverter     LCL filter    

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Parametric control of structural responses using an optimal passive tuned mass damper under stationary

Min-Ho CHEY, Jae-Ung KIM

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 267-280 doi: 10.1007/s11709-012-0170-x

Abstract: In this study, the structural control strategy utilizing a passive tuned mass damper (TMD) system asdevice is outlined, highlighting the parametric optimization approach for displacement and acceleration controlFor the vibration control of an undamped structure, the optimal parameters of a TMD, such as the optimalseveral different controlled responses are examined, and then the displacement and acceleration based control

Keywords： tuned mass damper     parametric optimization     passive control     white noise     earthquake excitation    

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Large eddy simulation of a 660 MW utility boiler under variable load conditions

Haoshu SHEN, Yuxin WU, Minmin ZHOU, Hai ZHANG, Guangxi YUE, Junfu LYU

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 124-131 doi: 10.1007/s11708-020-0659-2

Abstract: In this paper, LES was applied to simulate a 660 MW ultra-supercritical boiler under BMCR (boiler maximumThe simulation results show that the operation load has significant effects on the boiler performanceIt is also proved that LES can provide guidance for the design and operation of advanced coal-fired boilers

Keywords： large eddy simulation     ultra-supercritical boiler     operation load    

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Multiple target implementation for a doubly fed induction generator based on direct power control under

Heng NIAN,Yi-peng SONG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 4,   Pages 321-334 doi: 10.1631/FITEE.1400170

Abstract: paper presents a multiple target implementation technique for a doubly fed induction generator (DFIG) underunbalanced and distorted grid voltage based on direct power control (DPC).Based on the mathematical model of DFIG under unbalanced and distorted voltage, the proportional andThe insensitivity of the proposed control strategy to DFIG parameter deviation is analyzed.the DFIG experimental system is developed to validate the availability of the proposed DPC strategy under

Keywords： Direct power control     Doubly fed induction generator     Unbalanced and distorted grid voltage     Vector proportional    

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A multi-sensor relation model for recognizing and localizing faults of machines based on network analysis

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0736-9

Abstract: Second, the localization for multi-source faults is seldom investigated, although locating the anomalyvariable over multivariate sensing data for certain types of faults is desirable.

Keywords： fault recognition     fault localization     multi-sensor relations     network analysis     graph neural network    

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Title Author Date Type Operation

Overview of condition monitoring and operation control of electric power conversion systems in direct-drivewind turbines under faults

Shoudao HUANG, Xuan WU, Xiao LIU, Jian GAO, Yunze HE

Journal Article

Micromixing performance of the teethed high shear mixer under semi-batch operation

Journal Article

Optimization of urban bus operation frequency under common route condition with rail transit

Bin YU, Sijia REN, Enze WU, Yifan ZHOU, Yunpeng WANG

Journal Article

Simulation of performance of intermediate fluid vaporizer under wide operation conditions

Bojie WANG, Wen WANG, Chao QI, Yiwu KUANG, Jiawei XU

Journal Article

Deformation control criterion of shield tunnel under lateral relaxation of soft soil

Journal Article

Analysis and stabilization control of a voltage source controlled wind farm under weak grid conditions

Journal Article

Mechanism and control of existing faults on long-span concrete continuous system bridges in China

Lin Fan,Wang Ping,Xiao Kaijun,Li Wei

Journal Article

Condition monitoring of a wind turbine generator using a standalone wind turbine emulator

Himani,Ratna DAHIYA

Journal Article

An integrated approach for machine-learning-based system identification of dynamical systems under control: application towards the model predictive control of a highly nonlinear reactor system

Journal Article

Semi-active fuzzy control of Lali Cable-Stayed Bridge using MR dampers under seismic excitation

Sajad JAVADINASAB HORMOZABAD, Amir K. GHORBANI-TANHA

Journal Article

Feedback linearization based control for weak grid connected PV system under normal and abnormal conditions

Rahul SHARMA,Sathans SUHAG

Journal Article

Parametric control of structural responses using an optimal passive tuned mass damper under stationary

Min-Ho CHEY, Jae-Ung KIM

Journal Article

Large eddy simulation of a 660 MW utility boiler under variable load conditions

Haoshu SHEN, Yuxin WU, Minmin ZHOU, Hai ZHANG, Guangxi YUE, Junfu LYU

Journal Article

Multiple target implementation for a doubly fed induction generator based on direct power control under

Heng NIAN,Yi-peng SONG

Journal Article

A multi-sensor relation model for recognizing and localizing faults of machines based on network analysis

Journal Article